GPS接收机自主完好性监视算法研究及仿真  

Research and simulation on RAIM algorithm of GPS

作　　者：李飞[1] 段哲民[1] 龚诚[2] 

机构地区：[1]西北工业大学电子信息学院,西安710072 [2]中国航空无线电电子研究所,上海200233

出　　处：《测绘科学》2009年第1期136-137,232,共3页Science of Surveying and Mapping

基　　金：国防预研支撑项目(619010702)

摘　　要：随着GPS等卫星导航技术的广泛应用,在实际导航中对接收机的导航定位精度,尤其对定位的有效性提出了越来越高的要求。目前对此较为有效的方法就是利用接收机自主完好性监视(RAIM)进行保障,而且该方法日益凸显出其优越性。常用的自主完好性监视方法有伪距比较、最小二乘残差估计以及Parity方法,本文针对最小二乘残差估计方法实现的RAIM算法进行了研究和仿真,图形和数据化的仿真结果充分证明了该方法的可行性。With the widespread use of satellite navigation technique like GPS, the requirement of the precision and effectiveness in particular of navigation is more and more strict. To guarantee the requirement, the method of RAIM is addressed. And its superiority is more and more apparent. The common methods of RAIM include the comparison of pseudo-range, the LSE and the Parity method. In this article, the LSE method is studied and simulated. The graphic and numeral simulation results adequately demonstrate that the method is feasible.

关 键 词：GPS 自主完好性监测 水平保护限 最小二乘残差估计 

分 类 号：P228.4[天文地球—大地测量学与测量工程]