网络RTK参考站间模糊度固定新方法  

A New Method of Ambiguity Resolution in Network RTK Between Reference Stations

作　　者：鄢子平[1,2] 丁乐乐[3,2] 黄恩兴[3] 于兴旺[2] 

机构地区：[1]武汉大学学报信息科学版编辑部,武汉市珞喻路129号430079 [2]武汉大学测绘学院,武汉市珞喻路129号430079 [3]天津市勘察院,天津市红旗南路428号300191

出　　处：《武汉大学学报（信息科学版）》2013年第3期295-298,323,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41204030)

摘　　要：针对当前网络RTK参考站间模糊度解算时模糊度检验的Ratio值较小、固定时间较长的局限性,提出了一种新的模糊度解算方法用于网络RTK参考站间模糊度的固定。首先在模糊度区域内对原始的模糊度通过整数变换,形成宽巷与L2模糊度及其对应的方差协方差阵,然后采用LAMBDA方法对转换后的模糊度分块序贯固定。实验结果表明,与现有的模糊度解算方法相比,本文方法不但可以快速可靠地固定宽巷整周模糊度,而且提高了L2模糊度正确固定时的Ratio值,便于模糊度的正确检验,减少了模糊度的初始化时间,提高了模糊度解算的成功率。We propose a new method for ambiguity fixing between network RTK reference stations, which can improve the ratio value and success rate for the ambiguity test when ambiguity fixed needs long time passing the ratio test. Firstly, wide-lane and L2 ambiguity, with its variance-covariance matrix are formed from the original ambiguity by integer transformation. Secondly, LAMBDA method is used to sequentially fix the transformed block ambiguity. The results show that the new method not only can fast and reliably fix the widelane ambiguity, but also improve the ratio value and success rate when ambiguity fixed correctly, which reduce the initialization time of ambiguity fixing.

关 键 词：网络RTK LAMBDA 模糊度解算 序贯模糊度固定 

分 类 号：P228.41[天文地球—大地测量学与测量工程]