GPS系列卫星广播星历轨道和钟的精度分析  

Precision Analysis on Orbit and Clock of GPS Satellites Broadcast Ephemeris

作　　者：郭斐[1] 张小红[1] 李星星[1] 胡权[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2009年第5期589-592,共4页Geomatics and Information Science of Wuhan University

基　　金：国家863计划资助项目(2006AA12Z325);武汉市青年科技晨光计划资助项目(200850731375);国家创新研究群体科学基金资助项目(40721001)

摘　　要：指出了在对GPS广播星历精度进行比较分析之前必须处理好的一些关键问题;统计了短期内(连续两周)所有GPS卫星的广播星历轨道误差及钟误差,并着重从卫星自身角度对其精度加以分析。分析结果表明,当前广播星历的轨道精度已经达到2 m,钟差精度达到10 ns左右;不同类型卫星的精度状况有所差异,主要体现在其稳定性方面,Block IIR卫星优于Block IIA卫星,铷钟卫星短期稳定性优于铯钟卫星。We pointd out several key issues, which should be well resolved sion analysis of GPS broadcast ephemeris. Statistical analysis of both the accuracy were presented with a test of a period of two weeks, mainly from ellite itself. The orbital accuracy reached 2-3 m, and the clock precision nanoseconds. In addition, The precision varies from satellites to satelli Block IIR were superior to that of Block IIA, while rubidium clocks were b clocks, especially in the acpect of stability.

关 键 词：GPS广播星历 精密星历 轨道误差 钟误差 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P228[天文地球—测绘科学与技术]