卫星导航 RAIM 多星故障检测与识别方法研究

摘要

针对传统卫星导航接收机自主完好性监测 RAIM 方法在多颗故障卫星情况下故障识别的检测概率低、虚警概率高的问题，提出一种检测概率较高、虚警概率低、同时具有低运算量、可工程化实施的 RAIM 多星故障检测与识别方法，文中分别阐述方法的原理及及其仿真分析，结果表明本方法在无虚警情况下获得了较高的检测概率。本方法具有非常低的运算量，在具有 m（m＞0）颗故障卫星的情况下，通常仅需要2 m 次最小二乘残差故障检验和 m 次故障识别，具有较高的应用价值。%In order to solve traditional satellite navigation receiver autonomous integrity monitoring (RAIM)problems, just like the low fault detection probability and the high false alarm probability,the RAIM satellite fault detection and recogni-tion method is proposed in this paper,which has a high detection probability,a low false alarm probability,low computation cost,and is suitable for project implementation.This method has carried on the simulation analysis,the results show that this method has obtained higher detection probability in the case without false alarm.The computation of this method is very low, with m(m>0)faulty satellites situation,usually only need 2 m times least squares residuals fault detection and m times fault identification,so it has high application value.