一种惯性辅助卫星完好性监测多解分离法的优化方法  

Optimization for multiple solution separation method in inertial aided satellite integrity monitoring

作　　者：雷宝权[1] 曾进[1] 

机构地区：[1]中航工业西安飞行自动控制研究所,西安710065

出　　处：《中国惯性技术学报》2014年第3期374-380,共7页Journal of Chinese Inertial Technology

基　　金：航空科学基金项目(20110818013)

摘　　要：针对惯性辅助卫星完好性监测多解分离法计算量大的问题,给出了一种基于参数序贯复用的优化方法。在对多解分离法及其计算量分析基础上,采用序贯处理技术,推导了低阶顺序处理多解分离法。同时根据系统结构特点以及滤波器间量测信息高度相关性,提出滤波器参数复用方法,避免参数重复计算。通过仿真实验,从故障引入时间和可见星数目变化两个方面对优化前后多解分离法的计算量进行了对比。仿真结果表明该优化方法可以有效降低多解分离法的计算量,便于工程应用。An improved efficient method based on parameter sequential reuse is presented in order to reduce the computation burden of Multiple Solution Separation(MSS) method in inertial aided satellite integrity monitoring. Based on MSS method and its computational complexity analysis, a low-order processing MSS method is deduced with sequential processing. With the help of system structure and correlations of filters measurements, a filter parameter reuse method is proposed to avoid parameters replication computation. Simulation experiments are implemented by changing the fault involvement moment and visible satellite numbers, and the computational complexity between proposed method and MSS method are compared. The simulation results show that the new improved method can effectively reduce the computation burden of MSS and is convenient in practical application.

关 键 词：卫星导航 惯性导航 卫星完好性监测 故障检测隔离 多解分离法 序贯处理 参数复用 

分 类 号：U666.1[交通运输工程—船舶及航道工程]