Browse > Article
http://dx.doi.org/10.5391/JKIIS.2012.22.3.328

Method for Detection and Identification of Satellite Anomaly Based on Pseudorange  

Seo, Ki-Yeol (한국해양연구원 해양안전.방제기술연구부)
Park, Sang-Hyun (한국해양연구원 해양안전.방제기술연구부)
Jang, Won-Seok (한국해양연구원 해양안전.방제기술연구부)
Kim, Young-Ki (한국해양연구원 해양안전.방제기술연구부)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.22, no.3, 2012 , pp. 328-333 More about this Journal
Abstract
Current differential GPS (DGPS) system consists of reference station (RS), integrity monitor (IM), and control station (CS). The RS computes the pseudorange corrections (PRC) and generates the RTCM messages for broadcasting. The IM receives the corrections from the RS broadcasting and verifies that the information is within tolerance. The CS performs realtime system status monitoring and control of the functional and performance parameters. The primary function of a DGPS integrity monitor is to verify the correction information and transmit feedback messages to the reference station. However, the current algorithms for integrity monitoring have the limitations of integrity monitor functions for satellite outage or anomalies. Therefore, this paper focuses on the detection and identification methods of satellite anomalies for maritime DGPS RSIM. Based on the function analysis of current DGPS RSIM, it first addresses the limitation of integrity monitoring functions for DGPS RSIM, and then proposes the detection and identification method of satellite anomalies. In addition, it simulates an actual GPS clock anomaly case using a GPS simulator to analyze the limitations of the integrity monitoring function. It presents the brief test results using the proposed methods for detection and identification of satellite anomalies.
Keywords
GNSS; Differential GNSS; RSIM; Satellite anomaly; Detection and Identification; Pseudorange;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Radio Technical Commission for Maritime Services (2006), "RTCM Standard 10401.2 for Differential NAVSTAR GPS Reference Stations and Integrity Monitors (RSIM)," RTCM Paper 221-2006-SC104 -STD.
2 Radio Technical Commission for Maritime Services (2001), "RTCM Recommended Standards for Differential GNSS Version 2.3," RTCM Paper 136-2001/SC104-STD.
3 K.Y. Seo, S.H. Park, H.C. Jeong, and S.H. Suh, "Analysis on the Limitation of Integrity Monitoring Functions for Maritime DGPS," Proceedings of International GNSS, 2009.
4 K.Y. Seo and S.H. Park, "Detection and Identification Methods of Satellite Anomalies for Maritime DGPS RSIM," Proceedings of European Navigation Conference (ENC), 2011.
5 K.Y. Seo, S.H. Park, W.S. Jang, and S.H. Suh, "Performance Analysis of Software Reference Station and Integrity Monitor for Maritime DGPS," Proceedings of European Navigation Conference (ENC), 2009.
6 S.H. Park, K.Y. Seo, D.J. Cho, and S.H. Suh, "AParity Space Approach for Satellite Anomaly Monitoring of Maritime DGPS," Proceedings of the Institute of Navigation (ION), 2011.
7 Anne-Laure Vogel, Christophe Macabiau, and Norbert Suard, "Effect of a GPS Anomaly on Different GNSS Receivers," ION GNSS 18th International Technical Meeting of the Satellite Division, 13-16 September 2005, LongBeach, CA.