A Dual-Satellite GNSS Positioning Algorithm of High Accuracy in Incomplete Condition

作     者：Bing Hou Xiaolin Zhang 

作者机构：Shanghai Engineering Center for Microsatellites Shanghai 201203 China Beihang University Beijing 100191 China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2016年第13卷第10期

页      面：58-68页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：partially supported by the National Natural Science Foundation of China under Grant No.61601296  61601295  and 61671304 

主　　题：Bei Dou navigation satellite system incomplete condition dual-satellite positioning algorithm kalman filtering 

摘      要：Global navigation satellite system could provide accurate positioning results in signal complete condition. However, the performance is severe when signal denied, especially for the single-mode Bei Dou receiver. This paper proposes a dual-satellite positioning algorithm to promote the positioning performance in the satellite signal gap. The new algorithm utilizes the previous positioning data stored in complete condition to simplify the positioning equations. As the clock bias persists for a short period, this proposed method could work out accurate positioning results by only two visible satellites, without the need of computing the clock bias. Also, the Kalman filtering algorithm is used to smooth the trajectories, and improve the positioning results. During the incomplete period, only two satellites for 30 seconds and three satellites for 60 seconds, the preliminary experiment result shows that, the presented method could provide almost the same positioning results as in complete condition.