Automatic target classification of man-made objects in synthetic aperture radar images using Gabor wavelet and neural network

2013 ◽  
Vol 7 (1) ◽  
pp. 073592 ◽  
Author(s):  
Perumal Vasuki ◽  
S. Mohamed Mansoor Roomi
1999 ◽  
Vol 12 (3) ◽  
pp. 499-511 ◽  
Author(s):  
Ennio Mingolla ◽  
William Ross ◽  
Stephen Grossberg

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4981
Author(s):  
Raghu G. Raj ◽  
Maxine R. Fox ◽  
Ram M. Narayanan

The need to classify targets and features in high-resolution imagery is of interest in applications such as detection of landmines in ground penetrating radar and tumors in medical ultrasound images. Convolutional neural networks (CNNs) trained using extensive datasets are being investigated recently. However, large CNNs and wavelet scattering networks (WSNs), which share similar properties, have extensive memory requirements and are not readily extendable to other datasets and architectures—and especially in the context of adaptive and online learning. In this paper, we quantitatively study several quantization schemes on WSNs designed for target classification using X-band synthetic aperture radar (SAR) data and investigate their robustness to low signal-to-noise ratio (SNR) levels. A detailed study was conducted on the tradeoffs involved between the various quantization schemes and the means of maximizing classification performance for each case. Thus, the WSN-based quantization studies performed in this investigation provide a good benchmark and important guidance for the design of quantized neural networks architectures for target classification.


2020 ◽  
Vol 26 (6) ◽  
pp. 52-57
Author(s):  
Ridvan Yayla ◽  
Baha Sen

In this paper, a hybrid classification approach which is combined with a more deep mask region-convolutional neural network and sparsity driven despeckling algorithm is proposed for synthetic aperture radar (SAR) image segmentation instead of the classical segmentation methods. In satellite technology, synthetic aperture radar images are strongly used for a lot of areas, such as evaluating air conditions, determining agricultural fields, climatic changes, and as a target in the military. Synthetic aperture radar images must be segmented to each meaningful point in the image for a quality segmentation process. In contrast, synthetic aperture radar images have a lot of noisy speckles and these speckles should be also reduced for a quality segmentation. Current studies show that deep learning techniques are widely used for segmentation methods. High accuracy and fast results can be obtained with deep learning techniques for image segmentation. Mask region-convolutional neural network can not only separate each meaningful field in the image, but it can also generate a high accuracy prediction for each meaningful field of synthetic aperture radar images. The study shows that smoothed SAR images can be classified as multiple regions with deep neural networks.


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