矢量正交算法在卫星完好性检测中的应用

Application of vector orthogonalization algorithm on RAIM

基于最小二乘的接收机自主完好性检测(RAIM)在卫星数增多时对于单颗卫星不变的故障性能出现下降。文章首先对该问题进行了分析,然后应用矢量正交算法提出了一种新的故障敏感矢量算法,该算法避免RAIM在卫星数增多时故障检测量中故障信息恒定时故障检测性能出现下降的问题,而是性能有所增强,而且该算法同时完成故障的定位。

RAIM’s capability of detecting the wrong satellite declines when the number of satellite has increased as well as the single satellite’s fault keep the same. This problem is first analysed, then a new alogorithm is proposed, which does not only avoid the problem, but also can isolate the fault satellite.