最小二乘RAIM与定位组合算法研究  

Least-square RAIM and positioning compatible arithmetic

作　　者：王鹃[1] 仇跃华[1] 

机构地区：[1]中国空间技术研究院卫星应用系统部,北京100086

出　　处：《电子测量技术》2008年第2期20-23,共4页Electronic Measurement Technology

摘　　要：本文主要针对RAIM算法及其在导航领域如何应用于导航接收机定位解算进行研究,通过RAIM算法在导航接收机中的应用,详细分析RAIM算法的特点及RAIM算法对导航定位产生的作用,提出一种将最小二乘RAIM算法与最小二乘定位解算相配合的方法,为提高导航精度、进一步开发导航接收机提供帮助。通过实验验证,该方法与以往复杂的RAIM算法相比,具有简单灵活的特性,能够很好的检测到是否存在故障导航星并准确判断出故障星号,继而在定位解算过程中排除,大幅度提高定位精度。This article discusses how to use the RAIM arithmetic in the positional calculation of the navigation receiver. Through using the RAIM arithmetic in navigation receiver （such as GPS receiver, GPS/GLONASS compatible receiver） of the single system, it analyzes the traits and the effects of the RAIM to the navigation receiver in detail. Then, it brings out a method that the least-square RAIM arithmetic combines with the positional calculation. Using this method, it can improve the navigation accurate and give help to exploit the single systemic and the compatible navigation receiver. This method is simple and flexible,not like others complicated RAIM arithmetic. By using this method, that whether the error satellite exists and which one is the error satellite can be detected easily. Then, the error satellite can be excluded off the process of positioning. In the result, the positioning level will be improved higher.

关 键 词：RAIM算法 导航接收机 最小二乘 定位解算 

分 类 号：TN96[电子电信—信号与信息处理]