• Laser & Optoelectronics Progress
  • Vol. 57, Issue 24, 241007 (2020)
Liangcai Qiao*
Author Affiliations
  • School of Information Engineering (College of Big Data), Xuzhou University of Technology, Xuzhou, Jiangsu 221018, China
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    DOI: 10.3788/LOP57.241007 Cite this Article Set citation alerts
    Liangcai Qiao. SAR Image Target Recognition Method Combining Multi-Resolution Representation and Complex Domain CNN[J]. Laser & Optoelectronics Progress, 2020, 57(24): 241007 Copy Citation Text show less
    Flow chart of multi-resolution representation algorithm
    Fig. 1. Flow chart of multi-resolution representation algorithm
    SAR image targets under different resolutions. (a) Original image; (b) 0.4m; (c) 0.5m; (d) 0.6m
    Fig. 2. SAR image targets under different resolutions. (a) Original image; (b) 0.4m; (c) 0.5m; (d) 0.6m
    Flow chart of obtaining label distribution
    Fig. 3. Flow chart of obtaining label distribution
    Convergence curve of network training process
    Fig. 4. Convergence curve of network training process
    Feature maps of proposed network output. (a) Input image; (b) first convolutional layer
    Fig. 5. Feature maps of proposed network output. (a) Input image; (b) first convolutional layer
    Flow chart of SAR image target recognition process combining multi-resolution representation and complex domain CNN
    Fig. 6. Flow chart of SAR image target recognition process combining multi-resolution representation and complex domain CNN
    Schematic of target to be identified. (a) BMP2; (b) BRT70; (c) T72; (d) T62; (e) BRDM2; (f) BTR60; (g) ZSU23/4; (h) D7; (i) ZIL131; (j) 2S1
    Fig. 7. Schematic of target to be identified. (a) BMP2; (b) BRT70; (c) T72; (d) T62; (e) BRDM2; (f) BTR60; (g) ZSU23/4; (h) D7; (i) ZIL131; (j) 2S1
    Identification results of 10 categories of targets under standard operating conditions
    Fig. 8. Identification results of 10 categories of targets under standard operating conditions
    Comparison curves of different methods under random noise identification problem
    Fig. 9. Comparison curves of different methods under random noise identification problem
    ClassTraining set(depression angle 17°)Test set(depression angle 15°)
    BMP2233195
    BTR70233196
    T72232196
    T62299273
    BRDM2298274
    BTR60256195
    ZSU23/4299274
    D7299274
    ZIL131299274
    2S1299274
    Table 1. Number of images for training and test samples under standard operating conditions
    MethodAverage recognition rate/%
    Proposed method99.42
    MR 198.78
    MR 299.02
    CNN99.08
    CCNN99.16
    Table 2. Average recognition rates of different methods under standard operating conditions
    ClassTraining set(depression angle 17°)Test set(depression angle 15°)
    BMP2233 (Sn_9563)196 (Sn_9566)196 (Sn_c21)
    BTR70233 (Sn_c71)196 (Sn_c71)
    T72232 (Sn_132)195 (Sn_812)191 (Sn_s7)
    Table 3. Number of images for training and test samples in model identification problems
    MethodAverage recognition rate /%
    Proposed method98.92
    MR 197.64
    MR 298.08
    CNN97.26
    CCNN98.23
    Table 4. Average recognition rates of different methods under model recognition problem
    SampleDepressionangle2S1BDRM2ZSU23/4
    Training set17°299298299
    Test set30°288287288
    45°303303303
    Table 5. Number of images for training and test samples in pitch angle recognition problem
    MethodAverage recognition rate/%
    30°45°
    Proposed method98.5673.62
    MR 197.5469.56
    MR 297.8271.08
    CNN97.4367.92
    CCNN98.0272.02
    Table 6. Average recognition rates of different methods under pitch angle recognition problem
    Liangcai Qiao. SAR Image Target Recognition Method Combining Multi-Resolution Representation and Complex Domain CNN[J]. Laser & Optoelectronics Progress, 2020, 57(24): 241007
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