一种GPS周跳探测与修复的组合算法

摘要

Cycle slip is an important affecting factor of the GPS positioning accuracy. Cycle slip detection and correction is always an important issue. Firstly, the classic cycle slip detection algorithms of the ionized layer remnant method of difference and the width lane phase narrow reduce false method were researched. Based on advantages and disadvantages of the two methods, the cycle slip detection and correction of the combination algorithm was designed. According to cycle slips' integer characteristics and making use of searching for integer solution, the cycle slips were determined and corrected. Test results showed that the new method was effective and practical.%周跳是影响GPS定位精度的一个重要因素,对周跳的探测与修复一直是个重要问题.首先研究了电离层残差法、宽巷相位减窄巷伪距法两种经典方法的优缺点,提出了一种探测周跳的组合算法.根据周跳的整数特性,利用搜索整数解的思想确定周跳的大小进而修复周跳.经实测数据检验,该算法有效可行,有很强的实用性.