![GPS知识]() |
<***N style="COLOR: #000000"><***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">全球卫星定位导航系统<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">(Global Positioning System-GPS)<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">是美国从本世纪<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">70<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年代开始研制，历时<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">20<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年，耗资<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">200<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">亿美元，于<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1994<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年全面建成，具有在海、陆、空进行全方位实时三维导航与定位能力的新一代卫星导航与定位系统。经近<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">10<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年我国测绘等部门的使用表明，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">以全天候、高精度、自动化、高效益等显著特点，赢得广大测绘工作者的信赖，并成功地应用于大地测量、工程测量、**摄影测量、运载工具导航和管制、地壳运动监测、工程变形监测、资源勘察、地球动力学等多种学科，从而给测绘领域带来一场深刻的技术革命。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 随着全球定位系统的不断改进，硬、软件的不断完善，应用领域正在不断地开拓，目前已遍及国民经济各种部门，并开始逐步深入人们的日常生活。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 11.0pt">GPS<***N style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 11.0pt">系统的特点<***N lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 11.0pt">:<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、全球，全天候工作：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 能为用户提供连续，实时的三维位置，三维速度和精密时间。不受天气的影响。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、定位精度高：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 单机定位精度优于<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">10<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">米，采用差分定位，精度可达厘米级和毫米级。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、功能多，应用广：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 随着人们对<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">认识的加深，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">不仅在测量，导航，测速，测时等方面得到更广泛的应用，而且其应用领域不断扩大。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 11.0pt">GPS<***N style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 11.0pt">发展<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 在卫星定位系统出现之前，远程导航与定位主要用无线导航系统。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、无线电导航系统<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">罗兰<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">--C<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">：工作在<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">100KHZ<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">，由三个地面导航台组成，导航工作区域<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2000KM<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">，一般精度<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">200-300M<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·Omega<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">（奥米茄）：工作在十几千赫。由八个地面导航台组成，可覆盖全球。精度几英里。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">多卜勒系统：利用多卜勒频移原理，通过测量其频移得到运动物参数（地速和偏流角），推算出飞行器位置，属自备式航位推算系统。误差随航程增加而累加。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 缺点：覆盖的工作区域小；电波传播受大气影响；定位精度不高。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、卫星定位系统<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> *早的卫星定位系统是美国的子午仪系统（<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">transit<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">），<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1958<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年研制，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">64<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年正式投入使用。由于该系统卫星数目较小（<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">5-6<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">颗），运行高度较低（平均<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1000KM<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">），从地面站观测到卫星的时间隔较长（平均<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1.5h<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">），因而它无法提供连续的实时三维导航，而且精度较低。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> 为满足军事部门和民用部门对连续实时和三维导航的迫切要求。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1973<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年美国国防部制定了<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">计划。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">发展历程<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">实施计划共分三个阶段：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">**阶段为方案论证和初步设计阶段。从<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1973<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年到<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1979<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年，共发射了<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">颗试验卫星。研制了地面接收机及建立地面跟踪网。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">第二阶段为全面研制和试验阶段。从<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1979<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年到<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1984<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年，又陆续发射了<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">7<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">颗试验卫星，研制了各种用途接收机。实验表明，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">定位精度远远超过设计标准。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">·<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">第三阶段为实用组网阶段。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1989<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">月<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">日**颗<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">工作卫星发射成功，表明<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">系统进入工程建设阶段。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1993<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">年底实用的<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">网即（<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">21+3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">）<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">星座已经建成，今后将根据计划更换失效的卫星。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 11.0pt">GPS<***N style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 11.0pt">原理<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">系统的组成<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">由三个独立的部分组成：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 7.5pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">●<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">空间部分：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">21<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">颗工作卫星，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">颗备用卫星。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 7.5pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">●<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">地面支撑系统：<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">个主控站，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">个注入站，<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">5<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">个监测站。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 7.5pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">●<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">用户设备部分：接收<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">卫星发射信号，以获得必要的导航和定位信息，经数据处理，完成导航和定位工作。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">接收机硬件一般由主机、天线和电源组成。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">定位原理<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">定位的基本原理是根据高速运动的卫星瞬间位置作为已知的起算数据，采用空间距离后方交会的方法，确定待测点的位置。如图所示，假设<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">t<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">时刻在地面待测点上安置<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">接收机，可以测定<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">GPS<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">信号到达接收机的时间<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Cambria Math','serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Cambria Math'">△<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">t<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">，再加上接收机所接收到的卫星星历等其它数据可以确定以下四个方程式： |
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<***N style="COLOR: #000000"><***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">上述四个方程式中待测点坐标<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">x<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> y<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> z <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">和<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">Vto<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">为未知参数，其中<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">di=c<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Cambria Math','serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Cambria Math'">△<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">ti (i=1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4)<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">di (i=1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4) <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">分别为卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">到接收机之间的距离。<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"> <***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Cambria Math','serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Cambria Math'">△<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">ti (i=1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4) <***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">分别为卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1<***N style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial">、卫星<***N lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: 'Arial','sans-serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 0pt; mso-ansi-language: EN-U
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