基于站间单差的GPS/GLONASS组合模糊度解算研究  

Ambiguity Resolution of GPS/GLONASS Based on Single Difference between Stations

作　　者：刘慧敏 王振杰[1] 欧吉坤 吴会胜 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,青岛市长江西路66号266580 [2]大地测量与地球动力学国家重点实验室,武汉市徐东大街340号430077

出　　处：《大地测量与地球动力学》2017年第12期1257-1262,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41631073;41374008;41574015);中国科学院科技创新基金(CXJJ-14-M18);山东省自然科学基金(ZR2015DL004)~~

摘　　要：推导分析了基于站间单差的GPS/GLONASS组合双差模糊度解算数学模型及影响其精度的误差因素。利用模糊度参数在无周跳和粗差情况下的时不变性特点,采用自适应选权滤波对单差数据进行滤波处理,并将滤波后的单差模糊度通过选择基准卫星固定为双差模糊度。采用不同长度的实测动静态短基线数据进行测试,结果表明基于自适应选权滤波的站间单差模型可以简便有效地进行双差模糊度固定,模糊度固定成功率在95%以上,解算精度优于单模型以及双模型单历元解。In this paper, the mathematical model of GPS and GI.ONASS based on the single difference between stations is derived, and the error factors affecting the positioning accuracy are analyzed. Considering that the ambiguity is fixed without cycle slip and gross error, single difference ambiguity can be more smooth using filtering of selecting equivalent weight matrix, and then can be fixed with double difference ambiguity after choosing a reference ambiguity. The dynamic and static short baseline data are measured with different lengths, and the results show that the double difference ambiguity based on adaptive filtering by selection of the parameter weights of single difference model can be fixed well, and success rate is higher than the single epoch solution.

关 键 词：GPS GLONASS组合 站间单差 双差模糊度 自适应选权滤波 

分 类 号：P228[天文地球—大地测量学与测量工程]