维普中文期刊产品整合服务

An enhanced least squares residual RAIM algorithm based on optimal decentralized factor

查看全文 作　　者：Guanghui [1]SUN;Chengdong [1]XU;Dan [2]SONG;Yimei [1]JIAN 高影响力作者 机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;[2]School of Electronic and Information Engineering,Beihang University,Beijing 100191,China高影响力机构 出　　处：《Chinese Journal of Aeronautics》索引2020年第33卷第12期,共11页高影响力期刊 摘　　要：The Least Squares Residual(LSR)algorithm is commonly used in the Receiver Autonomous Integrity Monitoring(RAIM).However,LSR algorithm presents high Missed Detection Risk(MDR)caused by a large-slope faulty satellite and high False Alert Risk(FAR)caused by a small-slope faulty satellite.In this paper,the LSR algorithm is improved to reduce the MDR for a large-slope faulty satellite and the FAR for a small-slope faulty satellite.Based on the analysis of the vertical critical slope,the optimal decentralized factor is defined and the optimal test statistic is conceived,which can minimize the FAR with the premise that the MDR does not exceed its allowable value of all three directions.To construct a new test statistic approximating to the optimal test statistic,the Optimal Decentralized Factor weighted LSR(ODF-LSR)algorithm is proposed.The new test statistic maintains the sum of pseudo-range residual squares,but the specific pseudo-range residual is weighted with a parameter related to the optimal decentralized factor.The new test statistic has the same decentralized parameter with the optimal test statistic when single faulty satellite exists,and the difference between the expectation of the new test statistic and the optimal test statistic is the minimum when no faulty satellite exists.The performance of the ODFLSR algorithm is demonstrated by simulation experiments. 关 键 词：False alert Least squares residual(LSR)algorithm Missed detection Receiver autonomous integrity monitoring(RAIM) Slope
相关文献

参考文献(36)

引证文献(3)

耦合文献(68)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费