Refinement of BeiDou satellite antenna phase center correction model and its impact on precision orbit determination and positioning

doi:10.11947/j.AGCS.2020.20200289

Abstract

Abstract: Aiming at the lack of high accurate antenna phase correction (PCC) model for the BDS-2 IGSO and MEO satellites, in the BDS-2 and BDS-3 satellites joint precision orbit determination (POD) and precise point positioning (PPP), in this paper, an improved method for estimating PCV and z-offset parameters is used to refine the B1I/B3I ionosphere-free linear combination PCC model for the BDS-2 IGSO and MEO satellites. Compared with the results obtained using the ground-calibrated PCO model published by BeiDou official, the STD of SLR residuals obtained by the POD using the refined PCC model is reduced by 0.6~2.4 cm, and the improvement percentage is about 8.6%~33.3%. The floating PPP solution results, based on the refined BDS-2 satellite PCC model in this paper and the existing BDS-3 PCC model, have been significantly improved by 9.5 mm (37.2%) in the elevation direction.

Key words: BDS-2, BDS-3, satellite antenna phase center correction model, joint precise orbit determination, precise point position

CLC Number:

P228.4

ZHANG Qin, YAN Xingyuan, HUANG Guanwen, XIE Shichao, CAO Yu. Refinement of BeiDou satellite antenna phase center correction model and its impact on precision orbit determination and positioning[J]. Acta Geodaetica et Cartographica Sinica, 2020, 49(9): 1101-1111.

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