一种RTK单历元整周模糊度快速确定MAXCOM-DC组合算法  

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

作　　者：周命端 解乾龙 姬旭 徐翔 崔立锟 覃钰涵 ZHOU Mingduan;XIE Qianlong;JI Xu;XU Xiang;CUI Likun;QIN Yuhan(School of Geomatrics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 102616,China)

机构地区：[1]北京建筑大学测绘与城市空间信息学院,北京102616

出　　处：《测绘通报》2025年第1期107-111,137,共6页Bulletin of Surveying and Mapping

基　　金：北京高等教育“本科教学改革创新项目”(202310016001);北京建筑大学研究生教育教学质量提升项目(J2023003)。

摘　　要：本文针对传统的RTK单历元整周模糊度确定主辅频相关法(MAXCOM)观测卫星数增多导致单历元整周模糊度确定效率降低的问题,提出了一种单历元卫星分类筛选处理方法;将单历元所有卫星分类为参考星、主星和辅星,应用MAXCOM算法单历元确定主星整周模糊度和DC算法确定辅星整周模糊度,并提出了一种新的RTK单历元整周模糊度快速确定算法,称为MAXCOM-DC组合算法。对一组BDS-3实测数据900个连续观测历元进行动态定位试验,结果分析表明,MAXCOM-DC组合算法可避免在应用MAXCOM算法时辅星对主星整周模糊度搜索效率的影响,将主星数设为6时,单历元整周模糊度快速确定效率平均提升了98.5%,且单历元模糊度成功率达99.9%。本文为高采样数据单历元RTK快速定位提供了一种新算法。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.

关 键 词：实时动态定位 单历元整周模糊度确定 MAXCOM法 DC算法 MAXCOM-DC组合算法 

分 类 号：P228[天文地球—大地测量学与测量工程]