GPS非差数据周跳探测的TECR-MW综合法  

Cycle slip detection using TECR and MW combined method for un-differenced GPS data

作　　者：邹正标 何秀凤[1] 唐旭[1] 

机构地区：[1]河海大学卫星及空间信息应用研究所,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2014年第2期155-158,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(41274017);江苏省科技支撑计划(BE2010316)

摘　　要：针对电离层总电子含量变化率(TECR)方法和双频码相组合(MW)方法探测周跳各自的局限性,综合利用TECR法和MW法进行周跳探测。首先采用TECR法探测周跳,然后用MW法进行第2次探测,最后综合电离层TECR法和MW法的宽巷模糊度探测L1频率和L2频率上发生的周跳。这种综合探测法不受接收机与卫星间的几何距离、接收机钟差和卫星钟差、电离层折射的影响。采用实测数据进行试验,结果表明,综合利用TECR法与MW法探测GPS周跳比采用单一方法探测周跳更加有效、可靠。In order to overcome the shortcomings of the ionospheric total electron content rate （ TECR） and dual-frequency code phase combination （ MW ） methods, a combination of the two methods was used for cycle slip detection. First, the TECR method was used to detect the cycle slip. Then, the MW method was used to detect the cycle slip for the second time. Finally, the ionospheric TECR and the wide lane ambiguity of MW were used together to detect the cycle slip on L1 and L2 frequencies. This combined method was not affected by the geometrical distance between the receiver and satellite, the receiver clock offset, the satellite clock offset, and ionospheric refraction. According to the test results of measured data, the TECR and MW combined method is more effective and reliable than a single method in detecting GPS cycle slip.

关 键 词：周跳探测 电子含量 宽巷模糊度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]