Quality Analysis of Observation Data of BeiDou Global Experimental Satellites

doi:10.13474/j.cnki.11-2246.2018.0374

Abstract

Abstract: Five new-generation BeiDou global experimental satellites have been launched into inclined geosynchronous orbit (IGSO) and medium orbit (MEO) since March 2015. The quality of observation data directly affects our country's BDS globalization process, so it is necessary to master the quality of the observation. In this paper, the real observation data of 16 iGMAS stations and 6 MGEX stations from October 1 to October 21, 2017, are used to analyze the observation data quality of new-generation BeiDou global experimental satellites in terms of signal-to-noise ratio (SNR), data integrity rate, multipath, and ionospheric delay. The results show that the data integrity rate of the B1 and B3 frequency of the BeiDou global experimental satellites and the BeiDou working satellites are equivalent. The SNR of the experimental satellites are better than those of BeiDou working satellites. The multipath error and the ionospheric delay error of the experimental satellites are slightly better than those of the BeiDou satellites. Therefore, the BeiDou global experimental satellites can meet the normal requirements of BeiDou satellite navigation system.

Key words: BDS, global experimental satellites, evaluation index, quality analysis

CLC Number:

P228

HE Yilei, WANG Zhiwen, WANG Qianxin, MAO Ya. Quality Analysis of Observation Data of BeiDou Global Experimental Satellites[J]. 测绘通报, 2018, 0(12): 1-5.

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