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

다국어 초록 (Multilingual 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.

목차 (Table of Contents)

• Abstract
• I. 서론
• II. TOA 기반 eLoran 위치해 계산
• III. 실측치 기반의 eLoran 위치 추정 결과
• IV. 결론
• 참고문헌

참고문헌 (Reference)

1 박찬식, "측정 잡음을 고려한 위치 결정 기법의 성능비교" 제어·로봇·시스템학회 16 (16): 1176-1181, 2010

2 S. P. Song, "Verification of compensation and navigation algorithm using raw eLoran measurements" 2011

3 "Reelektronika"

4 D. Last, "Propagation of Loran-C signals in irregular terrain-modeling and measurements: Part1: Modeling" International Loran Association Technical 2000

5 The Minister of Land, Transport and Maritime Affairs, "Pohang & Kwangju Loran-C Station"

6 "LORADD series Integrated GPS/eLoran receiver Installation and operational manual, Reelektronika, User manual"

7 한덕희, "Epoch-by-epoch GNSS 정밀 측위에서 실수해의 특성" 제어·로봇·시스템학회 15 (15): 1254-1257, 2009

8 T. Vincenty, "Direct and inverse solutions of geodesics on the ellipsoid with application of nested equations" 22 : 176-183, 1975

9 H. G. Lim, "Development of eLoran navigation algorithm considering ellipsoidal earth" 2010

10 S. Lo, "Defining primary, secondary, additional secondary factors for RTCM minimum performance specifications" Research & Radionavigation 2009