Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (6): 1824-1832.doi: 10.12305/j.issn.1001-506X.2025.06.11

• Sensors and Signal Processing • Previous Articles     Next Articles

Ballistic target HRRP recognition method based on improved whale algorithm and BiGRU

Caiyun WANG1,*, Yifan JIA1, Xiaofei LI2, Jianing WANG2, Yida WU1   

  1. 1. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    1. Beijing Institute of Electronic System Engineering, Beijing 100854, China
  • Received:2024-01-15 Online:2025-06-25 Published:2025-07-09
  • Contact: Caiyun WANG

Abstract:

To address the problem of time sequence feature extraction and recognition of high resolution range image (HRRP) for ballistic mid-course targets, a ballistic target recognition method based on optimized bidirectional gate recurrent unit (BiGRU) is proposed. Firstly, the HRRP data is processed as a bidirectional sequence, and a BiGRU network is established to extract the temporal features of both directions of HRRP. Secondly, the double weight strategy whale optimization algorithm (DWSWOA). Double weight factors enable higher whale optimization algorithm (WOA) converage velocity and lower probability of falling into local optimal solution, and are used to optimize the parameters of BiGRU. The experimental results of target HRRP recognition based on optimized BiGRU model show that the proposed method exhibits higher accuracy in target recognition, robustness and reliability on noisy data sets than the other four algorithms.

Key words: target recognition, high resolution range profile (HRRP), whale optimization algorithm (WOA), bidirectional gate recurrent unit (BiGRU), confidence

CLC Number: 

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