Comparative analysis of single-epoch RTK fast positioning performance for BDS-3 dual-frequency data

doi:10.13474/j.cnki.11-2246.2025.0702

Abstract

Abstract: In view to the fact that the uncertainty of performance differences between B1C+B2a and B1I+B3I signals used for single epoch RTK fast positioning in BDS-3 system.In this paper,based on the establishment of the BDS-3 single-epoch RTK fast positioning model,an implementation flowchart of RTK single-epoch double-difference integer ambiguity fast reslution algorithm for BDS-3 dual-frequency data is decuced in detail firstly.The BDS-3 single-epoch RTK fast positioning analysis software (short as SeOTF_RTK) is designed and developed,and the performance differences of single-epoch RTK fast positioning for BDS-3 dual-frequency data are compared and analyzed.The experiment results show that the positioning accuracy of BDS-3 single-epoch RTK fast positioning is basically equivalent for not only B1C+B2a data but also B1I+B3I data,and both can provide users with millimeter to centimeter level RTK surveying accuracy.For both BDS-3 static data and BDS-3 dynamic data,B1C+B2a data is better than B1I+B3I data in the success rate of RTK single-epoch double-difference integer ambiguity resolution both of which is 97.5%above,meanwhile B1I+B3I data is better than B1C+B2a data in the efficiency of RTK single-epoch double-difference integer ambiguity resolution both of which is better than 0.34 s.

Key words: BDS-3, single-epoch RTK fast positioning, single-epoch integer ambiguity fast resolution, dual-frequency data

CLC Number:

P228

ZHOU Mingduan, SONG Qiao, MENG Qinglong, DU Yao, LIU Minghua, LIN Shiqi, WANG Junjie. Comparative analysis of single-epoch RTK fast positioning performance for BDS-3 dual-frequency data[J]. Bulletin of Surveying and Mapping, 2025, 0(7): 5-12.

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