Weak Underwater Acoustic Target Detection and Enhancement with BM-SEED Algorithm

Bearing time record (BTR) is widely used in the field of passive sonar information processing for target detecting and tracking. One of its challenges is to obtain high-resolution beamforming power spectral to facilitate the directions estimating of arrivals, namely DOA estimating. This paper propos...

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Veröffentlicht in:Journal of marine science and engineering 2023-02, Vol.11 (2), p.357
Hauptverfasser: Yin, Fan, Li, Chao, Wang, Haibin, Nie, Leixin, Zhang, Yonglin, Liu, Chaonan, Yang, Fan
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Sprache:eng
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Zusammenfassung:Bearing time record (BTR) is widely used in the field of passive sonar information processing for target detecting and tracking. One of its challenges is to obtain high-resolution beamforming power spectral to facilitate the directions estimating of arrivals, namely DOA estimating. This paper proposes a new algorithm framework Block Matching - Subband Extrema Energy Detection (BM-SEED) to supplement the resolution and enhance the weak targets of BTRs. It extracts the peak features of target trajectories within the conventional beamforming (CBF)-based BTRs by using an improved sub-band peak energy detection (SPED) algorithm, and then enhances the weak targets and suppresses the false-alarm targets through time-spatial autocorrelation analysis. Simulations and sea-trial data evaluations demonstrate that the method of this paper can enhance weak targets, eliminate the interferences of false targets and improve the resolution of BTR targets to 1 degree under −20 dB.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse11020357