Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
권호 표지
DOI QR코드

DOI QR Code

Development of MATLAB GUI Based Software for Generating GPS RINEX Observation File

MATLAB GUI 기반 GPS RINEX 관측 파일 생성 소프트웨어의 개발

  • Kim, Dong-uk (Department of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University) ;
  • Yun, Ho (Department of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University) ;
  • Han, Deok-hwa (Department of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University) ;
  • Jang, Joo-young (Department of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University) ;
  • Kee, Chang-don (Department of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University) ;
  • So, Hyoung-min (Agency for Defense Development) ;
  • Lee, Ki-hoon (Agency for Defense Development) ;
  • Jang, Jae-gyu (Agency for Defense Development)
  • 김동욱 (서울대학교 기계항공공학부, 정밀기계설계공동연구소) ;
  • 윤호 (서울대학교 기계항공공학부, 정밀기계설계공동연구소) ;
  • 한덕화 (서울대학교 기계항공공학부, 정밀기계설계공동연구소) ;
  • 장주영 (서울대학교 기계항공공학부, 정밀기계설계공동연구소) ;
  • 기창돈 (서울대학교 기계항공공학부, 정밀기계설계공동연구소) ;
  • 소형민 (국방과학연구소) ;
  • 이기훈 (국방과학연구소) ;
  • 장재규 (국방과학연구소)
  • Received : 2015.07.09
  • Accepted : 2015.07.31
  • Published : 2015.08.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper introduces development of the MATLAB GUI based software for generating GPS RINEX observation file. The purpose of this software is to generate GPS measurements of reference station or dynamic user, which are similar to the real GPS receiver data, accurately and efficiently. This software includes two data generation modes. One is Precision mode which generates GPS measurements as accurate as possible using post-processing data. The other is Real-time mode which generates GPS measurements using GPS error modeling technique. GPS error sources are calculated on the basis of each data generation mode, and L1/L2 pseudorange, L1/L2 carrier phase, and Doppler measurements are produced. These generated GPS measurements are recorded in the RINEX observation version 3.0 file. Using received GPS data at real reference station, we analyzed three items to verify software reliability; measurement bias, rate of change, and noise level. Consequently, RMS error of measurement bias is about 0.7 m, and this verification results demonstrate that our software can generate relatively exact GPS measurements.

본 논문에서는 MATLAB GUI 기반으로 개발된 GPS RINEX 관측 파일 생성 소프트웨어에 대해서 소개한다. 개발된 소프트웨어는 두 가지 데이터 생성 모드를 기반으로 기준국 혹은 동적 사용자의 실제 GPS 측정치와 유사한 L1/L2 의사거리, L1/L2 반송파 위상, 도플러 측정치를 정확하고 효율적으로 생성한다. 생성된 측정치 결과는 최종적으로 RINEX version 3.0 관측 파일로 출력된다. 본 논문에서는 소프트웨어 검증을 위해 기준국의 실측 데이터를 기반으로 측정치 바이어스, 변화율, 잡음 수준을 분석해보았다. 그 결과 개발된 소프트웨어가 실제 GPS 측정치와 RMS 약 0.7 m 수준의 바이어스 오차를 갖는 GPS 측정치를 생성함을 확인하였다.

Keywords

References

  1. Matlab Algorithm Availability Simulation Tool (MAAST) Software Developer's Guide, Version 1.1, Stanford University, Stanford: CA, Jan, 2002.
  2. D. Kim, A study on correction generation algorithms for wide area differential GNSS, Ph.D. dissertation, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea, 2007.
  3. L. Heng, G. X. Gao, T. Walter, and P. Enge, "Statistical characterization of GPS signal-in-space errors," in Proceedings of the ION ITM 2011, San Diego: CA, pp. 312-319, 2011.
  4. B. Nava, P. Coisson, and S. M. Radicella, "A new version of the NeQuick ionosphere electron density model," Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 70, No. 15, pp. 1856-1862, Dec, 2008. https://doi.org/10.1016/j.jastp.2008.01.015
  5. Y. D. Kim, D. H. Han, H. Yun, D. U. Kim, C. D. Kee, H. M. So, K. H. Lee, and J. G. Jang, "Characteristic analysis of real-time ionospheric delay correction models for GNSS receiver in Korea," in Proceeding of the 2014 KSAS Fall Conference, Jeju, 2014.
  6. B. Hofmann-Wellenhof, H. Lichtenegger, and J. Collins, Global Positioning System Theory and Practice, 5th ed. New York, NY: Springer, 2001.
  7. Minimum Operational Performance Standards For Global Positioning System/Wide Area Augmentation System Airborne Equipment, RTCA DO-229D, 2006.
  8. B. Park, A study on reducing temporal and spatial decorrelation effect in GNSS augmentation system: consideration of the correction message standardization, Ph.D. dissertation, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea, 2008.
  9. D. H. Han, H. Yun, and C. D. Kee, "Modeling of GPS measurement noise for estimating smoothed pseudorange and ionospheric delay," Journal of Advanced Navigation Technology, Vol. 16, No. 4, pp. 602-610, 2012. https://doi.org/10.12673/jkoni.2012.16.4.602
  10. A. J. Van Dierendonck, J. B. McGraw, and R. G. Brown, "Relationship between Allan variances and Kalman filter parameters," in Proceedings of the 16th PTTI, NASA Goddard Space Flight Center, pp. 273-293, 1984.
  11. J. Rankin, "GPS and differential GPS: An error model for sensor simulation," in Position Location and Navigation Symposium IEEE, Las Vegas: NV, pp. 260-266, 1994.
  12. RINEX: The Receiver Independent Exchange Format, Vesion 3.00, Werner Gurtner Astronomical Institute, University of Bern, Switzerland, 2007.