卫星组合导航系统故障检测研究  

Inertial Aided GPS Fault Detection Research

作　　者：杨彬[1] 郭创[1] 樊蓉[1] 郭明威[2] 

机构地区：[1]空军工程大学航空航天工程学院 [2]94106部队

出　　处：《计算机仿真》2015年第9期137-141,共5页Computer Simulation

摘　　要：在卫星组合导航故障检测的研究中,由于离散模式故障影响卫星遥测数据,导致随时间变化的阶跃误差,严重影响组合导航系统精度,而现有的RAIM算法在四颗可见星时失效。针对上述问题,提出一种采用分解分离(MSS)的卫星组合导航系统故障检测法。仿真结果表明,新方法实现了在四星条件下的阶跃故障检测,能有效对野值和阶跃故障进行区分,重构后的系统符合导航精度要求,为进一步深入研究卫星组合导航系统故障检测的作用机理提供了一定的参考。Discrete schema fault can effect satellite telemetry data, result in a time-varying step error, and affect the accuracy of integrated navigation system seriously. In order to deal with the problem of RAIM＇ s requirement of at least five visible satellites to complete failure detection, in the case of SINS/GPS integrated navigation system, based on proposed configuration, a failure detection/isolation algorithm was designed by utilizing error measurement consist- ent of sub-filter. Based on this, we put forward an inertial aided GPS integrity method based on MSS. The simulation result shows that the failure can be detected and isolated when 4 satellites are found.

关 键 词：紧耦合 组合导航系统 解分离算法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]