Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (4): 1016-1023.doi: 10.12305/j.issn.1001-506X.2023.04.10

• Sensors and Signal Processing • Previous Articles    

Sea surface micro-moving target recognition based on sparse decomposition

Hanyi HUANG1, Shiyou HU2, Shenglong GUO2, Shanjun LI1,*, Qin SHU1   

  1. 1. College of Electrical Engineering, Sichuan University, Chengdu 610000, China
    2. Beijing Huahang Radio Measurement Institute, Beijing 100013, China
  • Received:2022-06-16 Online:2023-03-29 Published:2023-03-28
  • Contact: Shanjun LI

Abstract:

Clutter in the marine environment is strong, and the Doppler frequency of slow and weak targets often falls into the sea clutter Doppler bandwidth. It is difficult for the classic moving target detection methods to detect target echoes. In order to address such problems, this paper uses the tunable Q-factor wavelet transform (TQWT) algorithm to obtain the corresponding self-adaptive complete dictionaries according to the difference between the sea clutter and the target in the oscillation properties and sparse characteristics, and then uses the morphological component analysis (MCA) algorithm to obtain the corresponding target sparse coefficients and clutter sparse coefficients. Then, the target components and clutter components are obtained by multiplying the sparse coefficients with their respective adaptive dictionaries. Finally, the effectiveness of the algorithm is verified by using the radar sea detection dataset.

Key words: sea clutter, target recognition, sparse decomposition, tunable Q-factor wavelet transform (TQWT)

CLC Number: 

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