Quality analysis of observation data of the new Beidou II navigation satellites

2017 Forum on Cooperative Positioning and Service (CPGPS） Pub Date : 2017-05-01 DOI:10.1109/CPGPS.2017.8075136

Gao Yuting, Wang Li, Zhang Qin, Huang Guanwen, Xue Kang

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Abstract

Four new BDS II satellites have been launched which are named C31 (IGSO), C32 (IGSO), C33 (MEO) and C34 (MEO) separately. Their data qualities would affect the process of BDS globalization directly. In order to analyze the observation data quality of new navigation satellites, four indexes have been processed which contain data integrity rate, multipath, signal-to-noise ratio (SNR) and cycle slip ratio. The OBSQC software was developed to process the iGMAS data from September 8, 2016 to October 8, 2016. The experiment results show that the B1 and B3 data integrity rates of new navigation satellites are better than 95%. The SNR results of the new IGSO satellites are better than that of the IGSO working satellites while the SNR results of the new MEO satellites are quite similar to that of the MEO working satellites. In addition, the SNR values of the MEO satellites are better than that of the GPS MEO satellites. As for the multipath error, the results of the new navigation satellites are slightly better than that of the BDS working satellites and the GPS satellites.

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新型北斗二号导航卫星观测数据质量分析

四颗新的BDS II卫星已经发射，分别命名为C31 (IGSO)， C32 (IGSO)， C33 (MEO)和C34 (MEO)。其数据质量将直接影响北斗系统全球化进程。为了分析新型导航卫星的观测数据质量，对数据完整性、多径、信噪比和周跳率4个指标进行了处理。OBSQC软件用于处理2016年9月8日至2016年10月8日的iGMAS数据。实验结果表明，新型导航卫星的B1和B3数据完整性率均优于95%。新IGSO卫星的信噪比结果优于IGSO工作卫星，新MEO卫星的信噪比结果与MEO工作卫星的信噪比结果相当接近。此外，MEO卫星的信噪比优于GPS MEO卫星。在多径误差方面，新型导航卫星的结果略优于北斗工作卫星和GPS卫星。

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2017 Forum on Cooperative Positioning and Service (CPGPS）

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