Influence analysis of transmission line electromagnetic interference on BDS data quality and accuracy

doi:10.13474/j.cnki.11-2246.2021.312

Abstract

Abstract: China's self-developed BDS satellite navigation system is now completed. In addition to the traditional surveying and mapping field, BDS is now popularizing in various industries and applications. Aiming at the application of transmission line geological hazard monitoring, this paper explores the influence of transmission line electromagnetic environment on BDS satellite monitoring from two aspects:data quality and positioning accuracy. 23 days BDS observations under strong and no electromagnetic interference is applied into study. The analysis results of BDS monitoring data of 500 kV transmission line for 23 days show that the difference of data integrity rate is less than 1%, the multipath effect difference is less than 0.1 m, the signal-to-noise ratio difference is less than 0.3 dBHz, the cycle slip ratio difference is less than 150, and the relative positioning accuracy difference is less than 5%. In general, the influence of transmission line electromagnetic interference on the BDS data quality and positioning accuracy is not significant.

Key words: BDS, transmission line geological hazards, monitoring, data quality, positioning

CLC Number:

P228

FENG Zhiqiang, ZHANG Yaodong, HU Danhui, ZHOU Guangyuan, LI Zhaohui, ZHOU Xueming, MAO Xiaopo. Influence analysis of transmission line electromagnetic interference on BDS data quality and accuracy[J]. Bulletin of Surveying and Mapping, 2021, 0(10): 94-97,113.

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