一种实时探测参考站网络中周跳的新算法  

A New Algorithm for Cycle Slips On-Line Detection in Reference Station Network

作　　者：周乐韬[1] 黄丁发[1] 李成钢[1] 徐锐[1] 

机构地区：[1]西南交通大学空间信息工程中心

出　　处：《武汉大学学报（信息科学版）》2007年第5期439-442,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40271091);国家教育部博士点基金资助项目(20040613025);国家教育部优秀教师计划资助项目(2003109);四川省青年软件创新工程资助项目(2005641)。

摘　　要：提出一种应用于参考站间周跳探测的新算法。该算法使用双差双频相位、参考站精确的坐标和精密星历构造观测量,并用卡尔曼滤波来估计电离层参数,在给定显著水平的情况下,可以使用单个或少量历元以假设检验的方法探测和修复周跳。该算法将探测和修复合二为一,对每个历元的周跳都进行处理。A new method is proposed and developed for the reference station network based applications. In this approach, double-differenced dual-frequency phase measurements and the known coordinates of reference stations as well as the precise ephemeris are used to rebuild observation equation, and then a Kalman filter is designed for the parameters estimation, i.e. ionosphere delay etc. Experimental study shows cycle slip can successfully be detected and reconstructed within a single-epoch or a few epochs through a hypothesis test under the given confidence level. The detecting and repairing are put together in the approach to solve the cycle slip epoch-to-epoch.

关 键 词：GPS 周跳 探测与修复 参考站网络 卡尔曼滤波器 

分 类 号：P228.41[天文地球—大地测量学与测量工程]