Residual convolutional neural network and PCA dimensionality reduction fused SAR automatic target recognition method
A technology of convolutional neural network and automatic target recognition, which is applied in neural learning methods, biological neural network models, character and pattern recognition, etc., can solve the problems of low recognition accuracy and achieve high recognition rate, good recognition effect, and automation high degree of effect
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[0053] The present invention will be described in detail below based on the drawings.
[0054] Reference figure 1 The specific implementation steps of the present invention are as follows:
[0055] 1) Obtain the SAR target image data and label it according to the target category to form a training set.
[0056] For the multiple types of targets involved in the target recognition task, several SAR images of each type are collected as training samples.
[0057] 2) Data enhancement and preprocessing of the given training set image.
[0058] 2.1) Data enhancement:
[0059] Perform random translation, flip, rotation, and zoom operations on each SAR image in the training set, and the derived training samples generated are marked with the same label as the original training sample;
[0060] 2.2) Pretreatment:
[0061] 2.2.1) Use filtering algorithm to process SAR image to suppress coherent speckle noise. The pixel value after image filtering is calculated by formula (6), and the relevant variab...
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