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- Title
基于 t 检验的星基增强系统完好性数据核验.
- Authors
王娇; 陈潇; 邓平科; 吴海涛
- Abstract
According to the integrity requirement of the satellite-based augmentation system(SBAS), a method is presented for checking user differential range error(UDRE) broadcasted by SBAS. After the range measurement is processed by using global positioning system(GPS) ephemeris and SBAS differential message reference station, true UDRE is obtained and broadcast UDRE′ is checked in range domain with t-test method. The shortcomings of position domain checking such as enormous computation power and limited statistical fault detection capability are avoided by range domain checking. Results of collecting Japan′s Multifunctional Satellite Augmentation System(MSAS) data to verify the proposed method show the established statistical detection can effectively indicate the availability of the monitoring satellite under a threshold of 99.9% availability. Through comparing the broadcast UDRE with the true UDRE,the credibility of the pseudorange errors is proved. The method is feasible for UDRE monitoring and provides a reference for SBAS integrity verification.
- Publication
Telecommunication Engineering, 2017, Vol 57, Issue 10, p1213
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2017.10.018