A new triple-frequency cycle slip detecting algorithm validated with BDS data

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• 作者：Lingyong Huang ; Zhiping Lu ; Guojun Zhai ; Yongzhong Ouyang ; Motao Huang…
• 关键词：Triple frequency ; Cycle slip ; Geometry ; free phase combination ; Pseudorange minus phase linear combination ; Cycle slip detection
• 刊名：GPS Solutions
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：20
• 期：4
• 页码：761-769
• 全文大小：723 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geophysics and Geodesy
  Meteorology and Climatology
  Extraterrestrial Physics and Space Sciences
  Automotive and Aerospace Engineering and Traffic
  Electronic and Computer Engineering
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1521-1886
• 卷排序：20

文摘

Triple-frequency global navigation satellite systems allow the introduction of additional linear observation combinations. We define two geometry-free phase combinations and one geometry-free pseudorange minus phase linear combination to detect and correct cycle slip in real time. At first, the optimal BDS (BeiDou System) triple-frequency geometry-free phase combinations are selected for cycle slip detection. Then, a detailed analysis of the cycle slip detection is performed by examining whether some special cycle slip groups cannot be discovered by the selected combinations. Since there still remain some cycle slip groups undetectable by the two geometry-free phase combinations, we add a pseudorange minus phase linear combination which is linearly independent with these two phase combinations, to be sure that all the cycle slips can be detected. After that, an effective decorrelation search based on LAMBDA and least squares minimum principle is applied to calculate and determine the cycle slips. The method has been tested on triple-frequency undifferenced BDS data coming from a benign observation environment. Results show that the proposed method is able to detect and repair all the small cycle slips in the three carriers.