Systems Engineering and Electronics ›› 2024, Vol. 46 ›› Issue (11): 3684-3689.doi: 10.12305/j.issn.1001-506X.2024.11.10

• Sensors and Signal Processing • Previous Articles     Next Articles

Micro-Doppler feature extraction method for space coningtarget based on synchro-extracting transform and ridge detection

Lei WANG, Qian SU, Gao WEI, Jianzhou LI   

  1. School of Electronic Information, Northwestern Polytechnical University, Xi'an 710129, China
  • Received:2023-09-20 Online:2024-10-28 Published:2024-11-30
  • Contact: Jianzhou LI

Abstract:

To solve the problem of the tracking mistakes at curve intersections of micro-Doppler (m-D) in m-D extraction of the space coning target, an m-D feature extraction method based on synchro-extracting transform (SET) and ridge detection is proposed. Firstly, the algorithm obtains the energy-concentrated time-frequency image through SET technology. Secondly, the sinusoidal m-D curve generated at the top of the coning target can be extracted by the Hough transform. Then, the extracted top m-D curve is subtracted from the time-frequency image based on the CLEAN idea. Finally, the non-sinusoidal m-D curve at the bottom of the coning target can be extracted by the ridge detection algorithm based on the improved crazy climber algorithm and Kalman filter. Simulation results show that the proposed algorithm can avoid the problem of tracking mistakes at the intersection of m-D curves, and then accurately extract the m-D features.

Key words: synchro-extracting transform (SET), space coning target, micro-Doppler (m-D), Hough transform

CLC Number: 

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