Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference (한국측량학회:학술대회논문집)

Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회)
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Comparison of Calibration Methods of Phase Center Variations for Precise GPS Monument Positioning

정확한 GPS 기준국 좌표산출을 위한 위상중심 변동량 계산방법 비교

  • 원지혜 (국민대학교 대학원 산림자원학과) ;
  • 박관동 (국민대학교 삼림과학대학) ;
  • 하지현 (국민대학교 대학원 산림과학과) ;
  • 김상호 (국민대학교 대학원 산림자원학과)
  • Published : 2006.04.01
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Abstract

A determinated position with GPS (Global Positioning System) data processing is the position of the phase center of a GPS antenna. The phase center of a GPS antenna is. not a stable point and depends on the azimuth and elevation angles of GPS satellites. It is known that the phase center variations (PCV) of a GPS antenna are greater in the vertical than the horizontal directions. The PCV calibration models for a GPS. antenna has two approaches: relative and absolute. In this study. we compared the two calibration models using the six operational permanent GPS stations in South Korea and analysed the PCV of each station. In addition, we. tested two different kinds of GPS antennas and compared the results. The accuracy and precision of the relative calibration was worse than the absolute calibration.

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