Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
권호 표지
DOI QR코드

DOI QR Code

Verification of GPS Aided Error Compensation Method and Navigation Algorithm with Raw eLoran Measurements

실제 eLoran TOA 측정치를 이용한 GPS Aided 오차 보상 기법과 항법 알고리즘의 검증

  • Song, Se-Phil (Department of Electronics Engineering, Chungnam National University) ;
  • Choi, Heon-Ho (Department of Electronics Engineering, Chungnam National University) ;
  • Kim, Young-Baek (Hanyang Navicom Co.,) ;
  • Lee, Sang-Jeong (Department of Electronics Engineering, Chungnam National University) ;
  • Park, Chan-Sik (Department of Electronics Engineering, Research Institute for Computer and Information Communication, Chungbuk National University)
  • 송세필 (충남대학교 전자전파정보통신공학과) ;
  • 최헌호 (충남대학교 전자전파정보통신공학과) ;
  • 김영백 (한양네비콤(주) 부설연구소) ;
  • 이상정 (충남대학교 전자공학과) ;
  • 박찬식 (충북대학교 제어로봇공학과/충북대학교 컴퓨터정보통신 연구소)
  • Received : 2011.04.18
  • Accepted : 2011.07.20
  • Published : 2011.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The Loran-C, a radio navigation system based on TDOA measurements is enhanced to eLoran using TOA measurements instead of TDOA measurements. Many error factors such as PF, SF, ASF, clock errors and unknown biases are included in eLoran TOA measurements. Because these error factors can cause failure in eLoran navigation algorithm, these errors must be compensated for high accuracy eLoran navigation results. Compensation of ASF and unknown biases are difficult to calculate, while the others such as PF and SF are relatively easy to eliminate. In order to compensate all errors in eLoran TOA measurements, a simple GPS aided bias compensation method is suggested in this paper. This method calculates the bias as the difference of TOA measurement and the range between eLoran transmitters and the receiver whose position is determined using GPS. The real data measured in Europe are used for verification of suggested method and navigation algorithm.

Keywords

References

  1. The Minister of Land, Transport and Maritime Affairs, Pohang & Kwangju Loran-C Station, http://www.loran9930.go.kr
  2. T. Vincenty, "Direct and inverse solutions of geodesics on the ellipsoid with application of nested equations," Surv. Rev. 22, pp. 176-183, Apr. 1975.
  3. H. G. Lim, M. Y. Choi, C. S. Park, S. B. Son, H. K. Joo, and Y.-B. Kim, "Development of eLoran navigation algorithm considering ellipsoidal earth," Proc. of 2011 25th ICROS Annual Conference (in Korean), Chuncheon, Korea, May 2010.
  4. S. Lo, M. Leathem, G. Offermans, G. Thomas Gunther, B. Peterson, G. Johnson, and P. Enge, "Defining primary, secondary, additional secondary factors for RTCM minimum performance specifications," Research & Radionavigation, 2009.
  5. D. Last, P. Wiliams, and K. Dykstra, "Propagation of Loran-C signals in irregular terrain-modeling and measurements: Part1: Modeling," International Loran Association Technical, 2000.
  6. Reelektronika, www.reelektronika.nl/
  7. LORADD series Integrated GPS/eLoran receiver Installation and operational manual, Reelektronika, User manual, 2009.
  8. C. S. Park and J. G. Yim, "A performance comparison of positioning methods considering measurement noise," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 16, no. 12, pp. 1176-1178, Dec. 2010. https://doi.org/10.5302/J.ICROS.2010.16.12.1176
  9. D. H. Han, C. S. Park, D. H. Hwang, and S. J. Lee, "Characteristics of the float solutions in epoch-by-epoch GNSS precise positioning," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 15, no. 12, pp. 1254-1257, Dec. 2009. https://doi.org/10.5302/J.ICROS.2009.15.12.1254
  10. S. P. Song, H. H. Choi, Y.-B. Kim, S. J. Lee, and C. S. Park, "Verification of compensation and navigation algorithm using raw eLoran measurements," Proc. of 2011 26th ICROS Annual Conference (in Korean), Gwangju, Korea, May 2011.