A Performance of Positioning Accuracy Improvement Scheme using Wavelet Denoising Filter

Wavelet Denoising Filter를 이용한 측위 정밀도 향상 기법 성능

  • 신동수 (방위사업청 육군) ;
  • 박지호 (광운대학교 유비쿼터스 통신 연구실) ;
  • 박영식 (광운대학교 유비쿼터스 통신 연구실) ;
  • 황유민 (광운대학교 유비쿼터스 통신 연구실) ;
  • 김진영 (광운대학교 유비쿼터스 통신 연구실)
  • Received : 2014.07.18
  • Accepted : 2014.08.20
  • Published : 2014.09.30

Abstract

Recently, precision guided munition systems and missile defense systems based on GPS have been taking a key role in modern warfare. In warfare however, unexpected interferences cause by large/small scale fading, radio frequency interferences, etc. These interferences result in a severe GPS positioning error, which could occur late supports and friendly fires. To solve the problems, this paper proposes an interference mitigation positioning method by adopting a wavelet denoising filter algorithm. The algorithm is applied to a GPS/QZSS/Wi-Fi combined positioning system which was performed by this laboratory. Experimental results of this paper are based on a real field test data of a GPS/QZSS/Wi-Fi combined positioning system and a simulation data of a wavelet denoising filter algorithm. At the end, the simulation result demonstrates its superiority by showing a 21.6% improved result in comparison to a conventional GPS system.

Acknowledgement

Supported by : 한국연구재단

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