Real-time prediction of BDS-3 clock correction

doi:10.13474/j.cnki.11-2246.2023.0015

Abstract

Abstract: In the study of offshore precise dynamic positioning, the quality of BDS-3 correction information has a direct impact on the positioning results. This paper evaluates the quality of BDS-3 correction from the aspects of stability and accuracy. If BDS/GNSS fusion positioning mode is adopted, the communication cost of BDS-SMC is significantly higher. To solve this problem, this study proposes to use the clock correction prediction model for data compression, and analyze the structural characteristics of the clock correction, which is decomposed into the overall trend series and random fluctuation series, and then builds the prediction model respectively. The results show that DSC model is 6% higher than DLP model and 9% higher than DLP model in the 20 min prediction interval.

Key words: BDS-3 correction information, quality assessment, data structure characteristics, clock correction prediction, data compression

CLC Number:

P228

LIU Duxue, HE Kaifei, YANG Jinquan, XU Xiang, LI Jiaxing. Real-time prediction of BDS-3 clock correction[J]. Bulletin of Surveying and Mapping, 2023, 0(1): 88-94.

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