MAXCOM-DC combination algorithm of RTK single-epoch integer ambiguity fast resolution

doi:10.13474/j.cnki.11-2246.2025.0118

Abstract

Abstract: A single-epoch satellite classification and screening strategy is given to address the issue of reduced efficiency of traditional RTK single-epoch integer ambiguity resolution of main and auxiliary correlation method (MAXCOM) using the increased number of observation satellites. All satellites in a single-epoch data are classified as reference-satellite, main-satellites, and auxiliary-satellites. The MAXCOM algorithm is used to determine the ambiguity of the main-satellites and the DC algorithm is used to determine the ambiguity of the auxiliary-satellites. A new algorithm of RTK single-epoch integer ambiguity fast resolution, called MAXCOM-DC combination algorithm is proposed. Through a dynamic positioning experiment and result analysis using a set of BDS-3 measured data with 900 consecutive observation epochs, it is shown that the MAXCOM-DC combination algorithm can avoid the impact of auxiliary-satellites on the search efficiency of the main-satellites integer ambiguity in the application of the MAXCOM algorithm. When the number of main-satellites is set to 6, the efficiency of single-epoch integer ambiguity fast resolution is increased by an average of 98.5%, and the success rate of single-epoch ambiguity resolution is 99.9%. The proposed algorithm provides a new algorithm for single-epoch RTK fast positioning in high-sampling data.

Key words: RTK positioning, single-epoch integer ambiguity resolution, MAXCOM algorithm, DC algorithm, MAXCOM-DC algorithm

CLC Number:

P228

ZHOU Mingduan, XIE Qianlong, JI Xu, XU Xiang, CUI Likun, QIN Yuhan. MAXCOM-DC combination algorithm of RTK single-epoch integer ambiguity fast resolution[J]. Bulletin of Surveying and Mapping, 2025, 0(1): 107-111,137.

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