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An investigation of the Azimuth Error for Correlative Interferometer Direction Finding

상관형 위상비교 방향 탐지의 고도차에 대한 방위각 오차분석

  • Received : 2015.07.29
  • Accepted : 2015.10.20
  • Published : 2015.10.31

Abstract

In this paper, we present an azimuth error analysis for the correlative interferometer direction finding. The correlative interferometer is a direction finding method that compares the theoretical and measured phase differences. The direction of the radio transmitter can be estimated by obtaining the maximum correlation between two data sets. We used a 5-element circular array antennas arranged in a circle. To derive the correlation function between antenna elements, we assume that the incident plane wave arrives from a certain angle and the phase difference of each antenna can be derived by comparing with the reference. The suggested direction finding gives a relatively accurate result even if the radio transmitter is located in the higher altitude.

Keywords

Correlative interferometer;direction finding;array antenna;noise;azimuth error

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Acknowledgement

Supported by : 국방과학연구소