Design of SQM Threshold for Ground-Based Augmentation System Based on GNSS
Abstract Aiming at the problem that the threshold model is too conservative due to the non-Gaussian features of the CNR and CCD monitoring quantities in the signal quality monitoring(SQM) process, we propose a threshold algorithm for SQM based on stable distribution. Firstly, we give two threshold models based on Gaussian distribution, and then derive the threshold model of monitoring quantities based on stable distribution. Finally, we evaluate and verify the threshold algorithm based on stable distribution by the measured data. The results show that the stable distribution can more accurately describe the CNR and CCD monitoring quantities, making the threshold envelope the monitoring quantity parameters tighter, solving the problem of the practical threshold model being too conservative and insufficiently accurate, reducing the risk and improving the integrity of the GBAS system.
Key words :
ground-based augmentation system(GBAS)
satellite navigation
stable distribution
integrity
SQM
Cite this article:
SUN Hao,SHI Xiaozhu,LIU Haiying et al. Design of SQM Threshold for Ground-Based Augmentation System Based on GNSS[J]. jgg, 2021, 41(7): 690-694.
SUN Hao,SHI Xiaozhu,LIU Haiying et al. Design of SQM Threshold for Ground-Based Augmentation System Based on GNSS[J]. jgg, 2021, 41(7): 690-694.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2021/V41/I7/690
[1]
ZHAO Hui,JIN Shuanggen,LUO Peng. Applicability of Different Solar Radiation Pressure Models for Beidou IGSO and MEO Satellites Orbit Determination [J]. jgg, 2022, 42(1): 9-14.
[2]
E Shenglong,ZHOU Gang,LONG Hai,LUO Yingting,XU Hailin,RAO Zhangquan,ZHOU Yongyan. Performance Evaluation of BDS Global Positioning Service and Zenith Tropospheric Delay Estimation [J]. jgg, 2021, 41(8): 789-794.
[3]
DING Yitao,GUO Meijun. Accuracy Analysis of Beidou Ionosphere Model [J]. jgg, 2021, 41(2): 131-139.
[4]
JIANG Yi,LIU Chen,LUO Fangyuan,ZHAO Huakai. Analysis of Anti-Disturbance Capability of Ionospheric Correction for BDS [J]. jgg, 2020, 40(9): 892-897.
[5]
HU Jie,YAN Yongjie,SHI Xiaozhu. Ionospheric Anomaly Detection for Ground Based Augmentation System Based on LMS Filtering
[J]. jgg, 2020, 40(5): 486-490.
[6]
Lü Weicai,GAO Jingxiang,YAN Chao,XU Wei,HUANG Hui,YANG Haisheng. Research on Cycle Slip Detection Algorithm for Beidou Triple-Frequency Carrier Pseudorange Combination [J]. jgg, 2020, 40(2): 117-122.
[7]
HE Maihang,SUN Fuping,XIAO Kai,ZHANG Lundong,ZHU Xinhui. Model and Verification of Beidou Triple-Frequency IF-PPP Based on Space Geometric Principle [J]. jgg, 2020, 40(12): 1290-1293.
[8]
YIN Hengyi,GUO Chunxi,HUI Zhe,ZHAO Hong,WANG Wei,CHENG Xiawei. Precision Analysis of Precipitable Water Vapor in Different BDS Ephemeris [J]. jgg, 2020, 40(11): 1182-1187.
[9]
XU Yangyin,YANG Yuanxi,ZENG Anmin,MA Yueyuan. Accuracy Assessment of Signal in Space of BDS-3 Global System [J]. jgg, 2020, 40(10): 1000-1006.
[10]
HU Jie,ZHOU Ling. Research on Airborne Integrity Algorithm for Ground Based Augmentation System Based on GPS [J]. jgg, 2020, 40(10): 1007-1011.
[11]
LI Linyang,CHEN Zhengsheng,CUI Yang,LU Zhiping,SUN Dashuang,KUANG Yingcai,WANG Fangchao. Design and Development of GNSS Data Processing Software GNSSer Based on Design Pattern [J]. jgg, 2019, 39(10): 1076-1080.
[12]
WANG Xingxing,TU Rui,HONG Ju,LIU Chongjin,LIU Jinhai. BDS Velocity Estimation and Performance Analysis Based on Time-Difference Model [J]. jgg, 2019, 39(1): 7-12.
[13]
WU Renpan,LIU Wanke,WU Fengbo,LI Jianlong. Analysis of TTFF and Accuracy of BDS Medium-Long Baseline Kinematic Relative Positioning [J]. jgg, 2018, 38(7): 668-672.
[14]
LIU Yuxi,JIA Xiaolin. Signal-In-Space Precision Analysis for IGSO and MEO Satellites of BDS Considering the Age of Data [J]. jgg, 2018, 38(4): 390-393.
[15]
PENG Hanbing,YANG Yuanxi,WANG Gang,LI Yu. Effect Analysis of GPS/BDS Combined Orbit Determination on Beidou Satellite Orbits [J]. jgg, 2018, 38(12): 1262-1267.