Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Effective Use of Radio Altimeter in GPS/DME Integrated Navigation Systems

GPS/DME 통합항법시스템에서 전파고도계의 효과적인 사용

  • Koo, Moonsuk (Department of Electronics Engineering, Chungnam National University) ;
  • So, Hyoungmin (The 3rd Research and Development Institute, Agency for Defense Development) ;
  • Oh, Sang Heon (Integrated Navigation Division, Navcours Co., Ltd.) ;
  • Hwang, Dong-Hwan (Department of Electronics Engineering, Chungnam National University)
  • 구문석 (충남대학교 전자공학과) ;
  • 소형민 (국방과학연구소 제3기술연구본부) ;
  • 오상헌 (넵코어스(주) 복합항법부) ;
  • 황동환 (충남대학교 전자공학과)
  • Received : 2015.09.04
  • Accepted : 2016.03.25
  • Published : 2016.04.05
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Abstract

Many researches on use of local ground navigation systems can be found to overcome vulnerability of GNSS. Effective use of an altimeter is proposed in GNSS/DME integrated navigation systems. A weighted DOP based on statistics of measurement error is derived for a given vehicle motion trajectory. From the derived DOP, the vertical error is estimated. By comparing the estimated vertical error with error specification of the altimeter, use of the altimeter is determined in the GPS/DME integrated navigation systems. In order to show effectiveness of the proposed method, 50 times Monte-Carlo simulations were performed for a GPS/DME integrated navigation system. The results show that the proposed method gives more accurate navigation outputs when the number of GPS satellites in view varies.

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References

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