Journal of the Korean Society for Aviation and Aeronautics (한국항공운항학회지)

The Korean Society for Aviation and Aeronautics (한국항공운항학회)
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Error Analysis of Inter-Frequency Bias Estimation in Global Navigation Satellite System Signals

위성항법 신호 이중주파수간 편이 추정오차 분석

  • 김정래 (한국항공대학교 항공우주 및 기계공학부) ;
  • 노정호 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이형근 (한국항공대학교 항공전자및 정보통신공학부)
  • Received : 2012.08.13
  • Accepted : 2012.09.19
  • Published : 2012.09.30
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Abstract

Global navigation satellite systems (GNSS) use dual frequency signals to remove ionosphere delay effect. GNSS receivers have their own biases, called inter-frequency bias (IFB) between dual frequencies due to differential signal delays in receiving each frequency codes. The IFB degrades pseudo-range and ionosphere delay accuracies, and they must be accurately estimated. Simultaneous estimation of ionosphere map and IFB is applied in order to analyze the IFB estimation accuracy and variability. GPS network data in Korea is used to compute each receiver's IFB. Accuracy changes due to ionosphere model changes is analyzed and the effect of external GNSS satellite IFB on the receiver IFB is analyzed.

Keywords

Acknowledgement

Supported by : 국토해양부

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