Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Real-time Precision GPS Positioning Algorithm Based on Reconfiguration Kalman Filter

재구성기법을 이용한 칼만필터 기반의 실시간 정밀 GPS 측위기법

  • Won, Jong-Hoon (Division of Electronics Engineering, Ajou University) ;
  • Ko, Sun-Jun (Division of Electronics Engineering, Ajou University) ;
  • Lee, Ja-Sung (Division of Electronics Engineering, Ajou University)
  • 원종훈 (아주대학교 전자공학부) ;
  • 고선준 (아주대학교 전자공학부) ;
  • 이자성 (아주대학교 전자공학부)
  • Published : 2000.07.17
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Abstract

This paper presents a practical On-The-Fly(OTF) integer ambiguity resolution algorithm for real-time precise positioning with low cost, $L_1$ single frequency, conventional C/A code GPS receiver. A state reconfiguration scheme is adopted in the Kalman filter to deal with the variation of ambiguity states caused by varying sets of visible GPS satellites. The proposed algorithm reduces the ambiguity search space from the coarse m-level C/A code pseudorange measurements of the conventional C/A code reciever, thereby reducing the computational time. Simulation results are presented to show that the algorithm achieves a cm-level accuracy.

Keywords