城市动态环境下GNSS RTK部分模糊度固定算法性能分析  

Performance Analysis of GNSS RTK Algorithm Based on Partial Ambiguity Resolution in Urban Dynamic Environments

作　　者：胡楠楠 章红平[1] 李团 谢兰天 HU Nannan1 ZHANG Hongping1 LI Tuan1 XIE Lantian1(1 GNSS Research Center,Wuhan University,129 Luoyu Road,Wuhan 430079,Chin)

机构地区：[1]武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号430079

出　　处：《大地测量与地球动力学》2018年第3期263-267,共5页Journal of Geodesy and Geodynamics

摘　　要：针对当前GNSS RTK算法在城市环境下可用率较低,特别是动态条件下满足cm级精度定位的观测历元少的现状,将部分模糊度固定算法应用于城市动态环境GNSS RTK定位,并采用城市环境下车载数据验证部分模糊度固定算法的可用性。测试结果证明,该算法能显著提高城市环境下GNSS RTK模糊度固定率,增加cm级定位历元数量。The availability of the current GNSS RTK algorithm in the city environment is still low and can rarely meet centimeter level positioning accuracy of observation epochs, especially under dynamic conditions. This paper attempts to apply the partial ambiguity fixing algorithm to the city dynamic environment GNSS RTK positioning. This can speed up ambiguity search efficiency and increase the available high precision positioning of the number of epochs. The vehicle borne data in the urban environment is used to verify the availability of the partial ambiguity fixing algorithm. The test results prove that the algorithm can significantly improve the ambiguity fixing rate and increase the number of epochs of cm level positioning in urban environments.

关 键 词：GNSS RTK 城市环境 LAMBDA方法 模糊度分组 部分模糊度固定 

分 类 号：P228[天文地球—大地测量学与测量工程]