南京理工大学学报（自然科学版）2024，Vol.48Issue(2)：209-217,9.DOI:10.14177/j.cnki.32-1397n.2024.48.02.011
顾及卫星之间相关性的抗差定位方法研究
Robust positioning method based on correlation between satellites
摘要
Abstract
In complex observation environment,satellite signals are prone to occlusion and interference,observation data are frequently abnormal and have strong correlation,and fault detection and excluded methods are prone to misidentify fault location,which leads to a significant decline in positioning performance.To solve this problem,a robust positioning method considering correlation between satellites is proposed.The faults are detected and identified by chi-square global test and w local test,respectively.When the correlation between satellites is weak,the identified faults are excluded and the position solution is completed.When the correlation between satellites is strong,the robust method is used to solve the results.The experimental results show that the strong correlation between satellites leads to a higher misdetection of the fault location,the traditional fault detection and excluded(FDE)method causes positioning result in great deviation,the robust positioning method based on correlation between satellites effectively reduces the influence of abnormal observations with the strong correlation in the complex environment and significantly improve positioning accuracy.关键词
卫星导航/抗差定位/相关性/故障检测和隔离/检验Key words
satellite navigation/robust positioning/correlation/fault detection and excluded/tests分类
天文与地球科学引用本文复制引用
吴有龙,陈帅,姚文进,殷婷婷,陈维娜..顾及卫星之间相关性的抗差定位方法研究[J].南京理工大学学报（自然科学版）,2024,48(2):209-217,9.基金项目
国家自然科学基金(61803188) （61803188）
江苏省博士后科研资助基金(2021K463C) （2021K463C）
江苏省高等学校自然科学研究项目(19KJB510028) （19KJB510028）
基础加强计划技术领域基金(2020-JCJQ-JJ-409) （2020-JCJQ-JJ-409）
