Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (12): 3526-3532.doi: 10.12305/j.issn.1001-506X.2021.12.14

• Sensors and Signal Processing • Previous Articles     Next Articles

SAR image speckle suppression method based on muti-scale interactive structure convolutional neural network

Shiyu SHEN, Xiaodong YE, Hao WANG, Shifei TAO*   

  1. School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2020-09-06 Online:2021-11-24 Published:2021-11-30
  • Contact: Shifei TAO

Abstract:

Combined with the idea of deep learning, a speckle suppression method for synthetic aperture radar (SAR) images based on multi-scale interactive convolutional neural network (CNN) is proposed. Firstly, a multi-scale extraction module is constructed by convolution kernels and skip connection with different sizes to obtain the features of different receptive fields and speed up the convergence of the network. Then, the network can make the best of shallow texture features by using simplified dense connection between multi-scale interactive feature extraction modules. Finally, the suppressed image is obtained by residual learning strategy. The experimental results show that compared with the existing methods, the proposed method not only uses less calculation parameters, but also ensures the improvement of performance.

Key words: deep learning, synthetic aperture radar (SAR), speckle suppression, convolutional neural network (CNN), residual learning strategy

CLC Number: 

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