摘要
随着多模卫星导航系统的广泛应用,多星故障(包含跳变故障和慢变故障)同时发生的概率也伴随着卫星数增多而增大。目前常用的完好性检测方法难以实现多星故障的同时检测与识别,其中慢变故障的检测更是一大难点。针对此,本文研究了一种由惯导系统提供位置基准、基于量测量不一致性的卫星故障识别法。仿真结果表明,该方法可以简单有效地实现多星故障包括慢变故障的同时识别,具有较高的实用价值。
As the multi-mode satellite navigation is widely used, the probability of multi-satellite faults, including abrupt faults and slowly growing error, grows as the number of satellites increases. The most widely used integrity monitoring methods at present have difficulty in multi-mode satellite faults identification, especially in slowly growing error detection. Aiming at this, an inertial aided fault satellite identification method based on inconsistency of the measurements is proposed. Simulation results show that this method can simply identify all the fault satellites at one time, and also effective for slowly growing error. So this method for fault satellite identification has high practical value.
出处
《现代导航》
2015年第1期9-12,共4页
Modern Navigation
关键词
多模卫星导航
完好性
故障检测
故障识别
Multi-Mode Satellite Navigation
Integrity
Fault Detection
Fault Identification
