Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Hybrid TDOA/AOA Localization Algorithm for GPS Jammers

GPS 전파교란원 위치 추정을 위한 TDOA/AOA 복합 기법 설계

  • Lim, Deok Won (Satellite Navigation Team, Korea Aerospace Research Institute) ;
  • Kang, Jae Min (Satellite Navigation Team, Korea Aerospace Research Institute) ;
  • Heo, Moon Beom (Satellite Navigation Team, Korea Aerospace Research Institute)
  • 임덕원 (한국항공우주연구원 위성항법팀) ;
  • 강재민 (한국항공우주연구원 위성항법팀) ;
  • 허문범 (한국항공우주연구원 위성항법팀)
  • Received : 2013.07.17
  • Accepted : 2013.10.14
  • Published : 2014.01.01
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Abstract

For a localization system, the TDOA (Time Difference of Arrival) measurement and AOA (Angle of Arrival) measurement are often used for estimating target's positions. Although it is known that the accuracy of TDOA based localization is superior to that of AOA based one, it may have a poor vertical accuracy in bad geometrical conditions. This paper, therefore, proposes a localization algorithm in which the vertical position is estimated by AOA measurements and the horizontal one is estimated by TDOA measurement in order to achieve high 3D-location accuracy. And this algorithm is applied to a GPS jammer localization systems because it has a large value of the DOP (Dilution of Precision) when the jammer is located far away from the system. Simulation results demonstrate that the proposed hybrid TDOA/AOA location algorithm gives much higher location accuracy than TDOA or AOA only location.

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References

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