Journal of Xidian University

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Noise-robust multi-feature joint learning HRRP recognition method

LI Long;LIU Zheng   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xian 710071, China)
  • Received:2017-09-05 Online:2018-08-20 Published:2018-09-25

Abstract:

In order to improve the recognition performance under low signal-to-noise ratio (SNR) conditions, a novel method is proposed for radar target high range resolution profiles (HRRP). This method achieves good recognition performance based on multi-feature joint learning for noisy HRRPs. The framework of this method is constructed based on sparse representation and low-rank representation, which are applied to extract the local and global features of target HRRPs. In the training stage, a feature extraction dictionary is produced based on the joint learning structured analytical discriminative dictionary method to improve the recognition performance. The cancellation method is implemented for noise suppression in the testing stage. Experimental results on the measured HRRP data demonstrate that the proposed method can significantly improve the overall recognition performance for HRRP testing samples under relatively low SNR conditions with a satisfactory real-time ability.

Key words: target recognition, high resolution range profile, noise robust, sparse representation, low-rank representation, dictionary learning