基于北斗双频数据的周跳探测及修复算法  

AN ALGORITHM FOR CYCLE SLIPS DETECTION AND CORRECTION BASED ON COMPASS DUAL-FREQUENCY DATA

作　　者：吴丰波[1] 张书毕[1] 张秋昭[1] 侯晓真[1] 

机构地区：[1]中国矿业大学环境与测绘学院,徐州221116

出　　处：《大地测量与地球动力学》2013年第5期140-144,共5页Journal of Geodesy and Geodynamics

基　　金：江苏高校优势学科建设工程资助项目(PAPD SA1102)

摘　　要：针对北斗导航卫星的钟差大、信号噪声大等特点,提出一种周跳探测与修复方法。首先根据单频码相组合,分别确定两个频率上周跳的搜索范围,然后加入载波相位变化率,基于双频载波相位进行最小二乘多项式拟合,拟合结果综合运用Blewitt方法检验标定周跳并剔除野值。根据周跳的整数特性,利用残差最小修复周跳。利用COMPASS-MEO卫星实测数据进行试验,验证了该算法可以有效地检测出所有周跳并快速修复。To counter the characteristics of Beidou navigation satellites＇ large clock error and signaltonoise, a suitable combined method for cycle slips detection and correction is proposed. Firstly, the limits of two frequency cycle slip can be determined by the combination of singlefrequency and code, then the least squares polynomial fitting would be performed based on dualfrequency data considering the change rate of carrier phase. The cycle slips would be demarcated and outliers would be rejected by the Blewitt method to test fitting results. The cycle slips, being an integer, can be restored by means of minimize the residuals. The test on COMPASSMEO satellites＇ data verifies that the proposed algorithm can detect all cycle slips and fix it quickly in static and lowdynamic measurements.

关 键 词：北斗导航卫星 周跳探测 单频码相组合法 电离层残差法 Blewitt检验 

分 类 号：P228.41[天文地球—大地测量学与测量工程]