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Detection and Parameter Estimation of Multicomponent Air Maneuvering Targets via RELAX

LI Hai, WANG Xiaohan, WU Renbiao   

  1. Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China
  • Received:2012-03-23 Revised:2012-12-14 Online:2013-04-25 Published:2013-04-23
  • Supported by:

    National Natural Science Foundation of China (61071194, 61231017, 60979002, 61079008); Fund of Civil Aviation University of China (2011kyE06) *Corresponding author. Tel.: 022-24092451 E-mail: haili@cauc.edu.cn

Abstract:

In this paper, a method based on RELAX is presented for detecting the multicomponent air maneuvering targets with the strong clutter background. This method combines the technique of reconstructing time samples with RELAX and effectively suppresses the interferences by stronger targets on the detection of weak targetsr. Therefore, the detection performance and parameter estimation precision of the multicomponent targets are enhanced at the same time. The method can provide an accurate estimate of the parameters even when the data sample is limited. At the same time, the Cramer-Rao bounds (CRBs) for the multicomponent maneuvering targets in airborne radar are derived. The effectiveness of the method is verified via simulated data.

Key words: airborne radar, maneuvering target detection, space-time adaptive processing, RELAX, reconstructing time samples

CLC Number: