对TurboEdit周跳探测及修复算法的改进  

Improvement of the Turbo Edit Cycle Slip Detection and Repair Algorithm

作　　者：李林阳[1] 吕志平[1] 周海涛[1] 李滨[2] 王宁[1] 

机构地区：[1]信息工程大学 [2]75711部队

出　　处：《测绘科学技术学报》2015年第2期140-145,共6页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41274015);国家863计划项目(2013AA122501)

摘　　要：概述了Turbo Edit算法的基本原理,指出了伪距观测值精度较低造成的小周跳探测不准的问题,分析归纳了不敏感周跳组合。设计了基于移动平滑窗口的探测模型,分别改进了Melbourne-Wübbena组合和Geometry-Free组合的周跳探测阈值条件,有效降低了伪距观测值精度较低对于周跳探测的影响。实验采用GPS和北斗实测双频数据进行了验证,结果表明,该算法能够准确地探测和修复双频非差观测数据中所有模拟的周跳。Firstly, the basic theory of Turbo Edit algorithm was generalized, the matter of cycle slips detection caused by low accuracy of pseudo-range was summarized,and then the insensitive cycle slip combinations were analyzed. Based on moving smooth window,the detection model was designed, the threshold for Melbourne-Wübbena combination and Geometry-Free combination were modified, and the influence of cycle slip detection caused by low accuracy of pseudo-range was effectively diminished. GPS and BDS dual-frequency data is applied in the experiment, the result indicates that all the simulated cycle slips in the dual-frequency non-difference data can be detected and repaired correctly.

关 键 词：TURBO Edit算法 周跳探测 移动平滑窗口 北斗 全球定位系统 

分 类 号：P228[天文地球—大地测量学与测量工程]