地基伪卫星单历元三频组合逐级模糊度解算方法  

Single epoch three carrier ambiguity resolution for ground base positioning system

作　　者：匡宇龙 王玲 乐乐[2] KUANG Yulong;WANG Ling;YUE Le(College of Information Science and Engineering,Hunan Normal University,Changsha 410081,China;Air Force Aviation Maintenance Technical College,Changsha 410124,China)

机构地区：[1]湖南师范大学信息科学与工程学院,湖南长沙410081 [2]空军航空维修技术学院,湖南长沙410124

出　　处：《全球定位系统》2020年第2期44-48,共5页Gnss World of China

基　　金：湖南省自然科学基金(2019JJ0030)。

摘　　要：为解决地基定位系统因基站固定导致几何多样性差,难以使用LAMBDA求解整周模糊度的问题.利用自差分双向时间同步原理,将双向观测值构建出消除钟差的公式.消去了时间误差的特性,将其作为双差测量值的替代,与三频模糊度解算(TCAR)算法相结合求解整周模糊度.在伪卫星平台的实验结果表明,能够实现快速单历元整周模糊度解算.Ground Base Positioning System has poor geometric diversity due to fixed base station position,and that will cause problems in using LAMBDA to solve integer ambiguity.To solve this problem,self-differential two-way ranging technique has been proposed by using the two-way measurement to build a formula to eliminate clock errors.As it got rid of the time errors,we use the self-differential two-way ranging measurement as an alternative to double difference measurement,combining with three-carrier ambiguity resolution algorithm to solve the ambiguity.Experimental result on a pseudolite platform shows that this method can achieve fast single-epoch integer ambiguity resolution.

关 键 词：整周模糊度 多频 双向时间同步 地基定位系统 假设检验 

分 类 号：P228.4[天文地球—大地测量学与测量工程]