Improved MRCC fault monitoring algorithm for GBAS ground station

Home > Archive>Volume 40, Issue 8, 2017 >125-129

Improved MRCC fault monitoring algorithm for GBAS ground station
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                        Zhi ChunyangZhi Chunyang
1. State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China; 2. The 54th Research Institute of CECT, Shijiazhuang 050081, China;3. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei Province, Shijiazhuang, 050081, China
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Xing ZhaodongXing Zhaodong
1. State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China; 2. The 54th Research Institute of CECT, Shijiazhuang 050081, China;3. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei Province, Shijiazhuang, 050081, China
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Zhao JingboZhao Jingbo
1. State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China; 2. The 54th Research Institute of CECT, Shijiazhuang 050081, China;3. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei Province, Shijiazhuang, 050081, China
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Hao Shuo4Hao Shuo
Civil Aviation University of China, Tianjin, 300300, China
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Affiliation:1. State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China; 2. The 54th Research Institute of CECT, Shijiazhuang 050081, China; 3. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei Province, Shijiazhuang, 050081, China; 4. Civil Aviation University of China, Tianjin, 300300, China
Clc Number:TN965.5
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Abstract:

Ground based augmentation system (GBAS) can strongly support aircraft’s precise approach landing, and integrity monitoring is not only the difficulty of the system realization but also the key point to safeguard the flight. In order to ensure the reliability of the differential correction from the GBAS ground station, the B value calculation and fault monitoring process in the multiple reference consistency check (MRCC) are used to eliminate the receiver channel which generates a lot of error in the correction. The principle and method of MRCC algorithm are analyzed in this paper, the problem of pseudo range and carrier phase B values are both more than threshold and the maximum value is not in the same channel are founded in the MRCC fault monitoring process. An improved algorithm of MRCC fault monitoring process is proposed for this problem, then the existing and improved MRCC fault detection algorithms are compared in the experiment. The results indicate that the improved algorithm can effectively solve the current problems in the hierarchical process of the inconsistency caused by the pseudo range and carrier phase.

Key words:GBAS; integrity monitoring; MRCC; satellite navigation

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Online: September 23,2017
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