Analysis and application of BDS-3 new frequency PPP continuity in East Antarctica

doi:10.13474/j.cnki.11-2246.2025.0803

Abstract

Abstract: Addressing the polar positioning performance of the BDS-3 new frequency,this paper analyzes the B1C/B2a dual-frequency combined precise point position(PPP)accuracy of the BDS-3 system and the coordinate time series variation trend for each tracking station,based on multi-year (2021—2025)measured data from four tracking stations in the East Antarctica region.Experimental results show that BDS-3 offers good satellite availability in East Antarctica,with an average of 9 satellites available and PDOP values below 3.The static PPP performance is excellent,with horizontal positioning accuracy better than 1 cm and vertical positioning accuracy better than 1.5 cm.Each tracking station's coordinates exhibit a significant shift trend,with a maximum annual shift rate reaching the centimeter level,mainly influenced by local ice flow speed and mass changes.Similarly,the study's results can be used to infer ice flow speed and mass changes,providing new references and continuous support for the practical application of BDS-3 new frequency in polar regions.

Key words: East Antarctica, BDS-3, new frequency, PPP

CLC Number:

P228

MAO Wenbin, YAN Hao, XU Junming, LIU Shiji. Analysis and application of BDS-3 new frequency PPP continuity in East Antarctica[J]. Bulletin of Surveying and Mapping, 2025, 0(8): 13-18.

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