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INS 속도 정보를 사용한 GPS 반송파 추적 루프의 성능 향상

Performance Improvement of INS Velocity-aided GPS Carrier Tracking Loop

  • 김정원 (충남대학교 전자공학과) ;
  • 이상정 (충남대학교 전기정보통신공학부) ;
  • 황동환 (충남대학교 전기정보통신공학부)
  • 발행 : 2006.07.01

초록

This paper presents performance improvement of the INS velocity-adided GPS carier tracking loop. To this end, INS velocity-aided GPS carrier tracking loop was modeled as a feedfoward and a feedback loop system. In the phase tracking loop, it was shown that the tracking error caused by the dynamic motion of the vehicle can be compensated with the aiding of the INS information irrespective of the loop order and bandwidth. However, the signal trcking error increases as the INS error increases. It was also shown that in order to remove the tracking error caused by INS bias error, more than or equal to 2nd order PLL should be used. Experiments were carried out and the experimental results were compared with the analysis results.

키워드

참고문헌

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