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A Study on the Incident Angle Estimation Method of Target at Coherent Interference

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2010, 15(5), pp.75-81
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Hosub Shin 1

1군산대학교

Accredited

ABSTRACT

Adaptive array antenna system estimates target signal, as making a null pattern toward the interference signal. However, receiving a coherent interference signal at adaptive array antenna system, as target signal is regarded as interference signal, the performance of system rapidly decreases. The main beam does not direct an incidence direction of target signal due to sensitivity in directivity error. This paper proposes beamforming algorithm which combines high order limit condition and directivity error modify method. And it minimizes degree of freedom and decreases interference signal and directivity error using proposed algorithm. This paper compares and analyzes the performance of proposed algorithm and general algorithm using simulation. In this paper, the proposed algorithm correctly estimates an incident angle, but general algorithm occurs an error of about 0.8˚.

Citation status

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