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一种GPS的双频周跳探测算法


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摘 要:在GPS进行观测时,由于物体遮挡、电离层异样等因素导致卫星信号在短时间内出现一种失锁行为,导致误差过大,影响定位精度。为了解决这一问题,本研究利用MATLAB软件,根据双频码相组合法和电离层残差法的特点,对GPS载波相位观测值进行周跳探测,结果表明:此方法可以准确探测出人为加入的周跳。

关键词:GPS;MATLAB;电离层残差法;周跳探测

中图分类号:P228     文献标志码:A     文章编号:1003-5168(2022)3-0010-04

DOI:10.19968/j.cnki.hnkj.1003-5168.2022.03.002

A GPS Dual Frequency Cycle Jump Detection Algorithm

ZHU Yunpeng ZHOU Songguang

(1.School of Spatial Information and Surveying engineering, Anhui University of Science and Technology,Huainan 232001,China;2.Zhoukou Municipal Administration Office, Zhoukou 466000,China)

Abstract: During GPS observation, satellite signals show a kind of lock-out behavior in a short period of time due to object occlusion, ionospheric anomalies and other factors, resulting in large errors and affecting positioning accuracy. In order to solve this problem, this paper uses MATLAB software, according to the characteristics of dual frequency code phase group method and ionospheric residual method, to detect the cycle jump of GPS carrier phase observation value, the results show that this method can accurately detect the man-made cycle jump.

Keywords: GPS; MATLAB; ionospheric residual method; cycle slip detection

0 引言

在载波相位观测中,信号易受到多路径干扰、物体遮挡、低信噪比等因素的影响,导致接收机出现接收信号失锁的现象,从而产生相位观测值整周跳变,即周跳[1-3]。(剩余3086字)

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