基于星间链路的完好性参数SISMA计算方法  

Algorithm of Integrity Index SISMA based on Inter-satellite Links

作　　者：范媚君[1,2] 谢廷峰[1] 

机构地区：[1]北京环球信息应用开发中心,北京100094 [2]解放军信息工程大学测绘学院,河南郑州450002

出　　处：《全球定位系统》2012年第2期15-18,共4页Gnss World of China

摘　　要：地基完好性监测是利用四个或四个以上的精确坐标的监测站对卫星进行监测,计算其星历及星钟误差。该方法需满足四重以上监测站覆盖条件,对于自主导航和区域布站的导航系统不能实现导航卫星的全弧段完好性监测。对于不满足上述覆盖条件的卫星,采用基于星间链路的监测方法,利用四个或四个以上的具有一定坐标误差的卫星对该卫星进行监测。通过星历数据和星间测距数据计算SISMA,从而进行导航卫星全弧段的完好性监测。The ground integrity monitoring is the use of four or more of the precise coor- dinates of the stations monitoring the satellite to calculate the satellite ephemeris and clock errors. The method must meet the monitoring stations covering more than quadruple the conditions for autonomous navigation and regional distribution stations Navigation Satellite navigation systems can not achieve the full arc integrity monitoring. The cover does not meet the conditions for the satellite, based on inter-satellite link monitoring methods, the use of four or more satellites with a certain coordinate error of the satellite monitoring. By intersatellite ephemeris data and ranging data calculated SISMA, so the whole arc of the satellite navigation integrity monitoring.

关 键 词：星间链路 完好性 SISMA 

分 类 号：P228.4[天文地球—大地测量学与测量工程]