一种惯性辅助卫星完好性监测多解分离法的优化方法

发布时间：2018-01-27 22:55

本文关键词： 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　出处：《中国惯性技术学报》2014年03期 　论文类型：期刊论文

【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。
[Abstract]:In order to solve the problem of large computational complexity of the multi-desegregation method for inertial assistant satellite integrity monitoring, an optimization method based on parametric sequential multiplexing is presented. The method is based on the analysis of the multi-desegregation method and its computational amount. Based on the sequential processing technique, the low order sequential processing multi-demultiplexing method is derived. According to the characteristics of the system structure and the high correlation of the measurement information among the filters, the filter parameter multiplexing method is proposed. Avoid repeated calculation of parameters. Through simulation experiments. This paper compares the computation amount of multi-solution separation method before and after optimization from the two aspects of fault introduction time and the number of visible stars. The simulation results show that the optimization method can effectively reduce the computational complexity of the multi-solution separation method. It is convenient for engineering application.
【作者单位】：中航工业西安飞行自动控制研究所;
【基金】：航空科学基金项目(20110818013)
【分类号】：TN96.1
【正文快照】： 全球导航卫星系统(GNSS)的广泛应用,使得实时卫星信号完好性监测越发的重要,受限于卫星星座分布和卫星伪距量测精度,接收机自主完好性监测(RAIM)无法提供足够的可用性满足飞机的导航目标,因此,依靠于GNSS互补性强的惯导(inertial)辅助GNSS完好性监测就得到了人们的重视[1-3,8]

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