分段检验与区间约束搜索的双频GPS周跳探测与修复  

Detection and Repair of Cycle Slip of Dual-frequency GPS Based on Piecewise Test and Interval Constrained Search

作　　者：黄德武 王建英 熊永良 HUANG Dewu;WANG Jianying;XIONG Yongliang(City College,Kunming University of Science and Technology,Kunming 650051,China;School of Engineering,Yunnan College of Business Management,Kunming 650106,China;Faculty of Geosciences and Environmental of Engineering,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]昆明理工大学城市学院,云南昆明650051 [2]云南经济管理学院工程学院,云南昆明650106 [3]西南交通大学地球科学与环境工程学院,四川成都611756

出　　处：《昆明理工大学学报（自然科学版）》2021年第2期51-58,共8页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(41674028);云南省教育厅科学研究基金项目(2020J1028)。

摘　　要：周跳是影响GPS定位结果的主要因素,对周跳的判断至关重要.本文针对双频周跳,通过分段检验法判断序列ΔΦ、ΔN_(1)、ΔN_(2)的异常值来确定周跳发生的位置,同时利用ΔΦ=ΔN_(1)-(λ_(2)/λ1)ΔN_(2)为主体方程,采用约束双频上周跳ΔN_(1)、ΔN_(2)的取值区间来修复周跳.通过采样率为1s、5s、10s及15s的GPS数据验证,本文方法不但解决了多值问题,而且能准确探测和修复双频上的周跳,计算准确率100%.Cycle slip is the main factor that affects the result of GPS positioning,so it is very important to judge the cycle slip accurately.In this study,piecewise test was used to determine the location of cycle slip of sequenceΔΦ,ΔN_(1),ΔN_(2),at the same time,useΔΦ=ΔN_(1)-(λ_(2)/λ1)ΔN_(2)as the main body equation,constrained dual-frequency value space ofΔN_(1),ΔN_(2)to repair cycle slip.Through the GPS data with sampling rates of 1 s,5 s,10 s and 15 s,the proposed method can not only solve the multi-value problem,but also accurately detect and repair cycle slips on dual frequency,and the calculation accuracy is 100%.

关 键 词：周跳 多值 分段检验 双频GPS 

分 类 号：P228.4[天文地球—大地测量学与测量工程]