The influence of improper stochastic modeling of Beidou pseudoranges on system reliability

被引：8

作者：

Yang, Ling ^{[1
,2
,3
]}

Li, Bofeng ^{[1
]}

Li, Haojun ^{[1
]}

Rizos, Chris ^{[4
]}

Shen, Yunzhong ^{[1
]}

机构：

[1] Tongji Univ, Coll Surveying & Geoinformat, Shanghai 200092, Peoples R China

[2] Key Lab Watershed Ecol & Geog Environm Monitoring, Nanchang 330209, Jiangxi, Peoples R China

[3] State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Hubei, Peoples R China

[4] Univ New South Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

来源：

ADVANCES IN SPACE RESEARCH | 2017年 / 60卷 / 12期

关键词：

Beidou system; Minimal detectable bias; Correlation coefficient; Vertical protection level; Measurement stochastic modeling;

D O I：

10.1016/j.asr.2017.05.035

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Stochastic models are important in Global Navigation Satellite System (GNSS) estimation problems, not only for parameter estimation, or precision assessment, but also for deriving system reliability and integrity measures. China's Beidou GNSS (BDS) has received considerable research attention, however it has mainly focused on parameter estimation challenges. In this paper the influences of the BDS measurement stochastic model on the internal reliability index minimal detectable bias (MDB), the separability index correlation coefficient, and the integrity index vertical protection level (VPL), for each satellite are analyzed and algebraic formulas derived for carrying out the calculations. The MDBs, correlation coefficients, and VPL values for different GEO, IGSO and MEO satellites indicate different patterns within the test area. It is shown that BDS has better constellation visibility in the East Asian area, and accordingly confirms optimal positioning and reliability performance within this region. (C) 2017 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：2680 / 2690

页数：11

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