A New Method to Detect and Repair Cycle-slip Based on A Double-differenced Model for Receivers and Epochs

被引：0

作者：

Chen Y. ^{[1
]}

Yi Z. ^{[1
,2
]}

机构：

[1] School of Geosciences and Info-Physics, Central South University, Changsha

[2] Key Laboratory for Urban Geomatics of National Administration of Surveying, Mapping and Geoinformation, Beijing University of Civil Engineering and Architecture, Beijing

来源：

Yi, Zhonghai (yizhonghai@163.com) | 1600年 / Editorial Board of Medical Journal of Wuhan University卷 / 42期

关键词：

Cycle-slip; GPS; Kinematic relative positioning; Outlier detection;

D O I：

10.13203/j.whugis20140848

中图分类号：

学科分类号：

摘要：

Cycle-slip detection and correction is an important issue in high precision kinematic GPS positioning, which seriously affects the efficiency of solving ambiguity on-the-fly. A new algorithm avoiding the shortcomings of triple-differenced methods to detect and repair cycle-slip based on double differenced model between receivers and epochs is proposed. First, outlier detection is used to locate the possible cycle-slip affected double difference, carrier phase observations, and the initial cycle-slip value can be determined. Finally, a cycle-slip optional combination search approach, based on the principle of least sum of squared residuals, was adopted to repair the cycle-slip. Theoretical analysis and experimental results show that cycle-slips can be located and repaired accurately with this new algorithm in most cases, when the number of effective observed satellites was not less than four. © 2017, Research and Development Office of Wuhan University. All right reserved.

引用

页码：845 / 850

页数：5

共 15 条

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