基于宽巷载波的GPS周跳探测与修复的算法改进  

Algorithm Improvement of Detecting and Repairing of GPS Slips Based on Wide Lane Carrier

作　　者：周桂初[1] 程新文[1] 李英成[2] 柳忠伟[1] 李英杰[2] 

机构地区：[1]中国地质大学(武汉),湖北武汉430074 [2]中国测绘科学研究院,北京100039

出　　处：《地理空间信息》2013年第2期118-121,11,共4页Geospatial Information

基　　金：国家科技支撑计划资助项目(YK1206-SR1)

摘　　要：鉴于双频P码伪距结合相位观测值用于探测周跳存在的不足,提出了结合DCPC图像和相应的算法来分析周跳发生大小以及发生位置的方法。尤其是在载波L1与L2出现大小相同的周跳且宽巷载波失效的情况下,需结合DCPC图像来分析周跳发生的历元,通过M-W宽巷载波组合及其电离层残差组合,用两历元间的二元一次方程来修复周跳。该方法能够快速地探测及修复周跳,具有实用性。This paper put forward that DCPC image would detect where the slips happened,and combine with a polynomial fitting to repair slips.Especially when L1 carrier and L2 carrier own the same size weeks,DCPC image can analysis the epoch which the same slips occur on.At the last,the M-W wide lane carrier combination and the ionosphere residual combined with two epoch difference of an equation can repair the slips.According to experiments analysis,the method is proven to be able to quickly detect weeks and repair jump,and is more practical.

关 键 词：M-W宽巷组合 DCPC图像 L1载波 L2载波 多项式拟合 电离层残差组合 

分 类 号：P228.41[天文地球—大地测量学与测量工程]