Single phase, single-polarization and high-resolution synthetic aperture radar (SAR) image-based secondary imaging method

Abstract

The invention relates to the technical field of synthetic aperture radar (SAR) image processing, in particular to a single channel, single-polarization and high-resolution SAR image class-based secondary imaging method. By the method, an image content is more detailedly and more accurately described by extracting right rank packing ratio characteristics and deficit moment characteristics of a gray level co-occurrence matrix from a high-resolution SAR image; the intensity of the original high-resolution SAR image is used as luminance; the right rank packing ratio characteristics are used as a blue channel, and the deficit moment characteristics of the gray level co-occurrence matrix are used as a red channel; and imaging is performed in a YCbCr color space. Because the original intensity value of an output image is used as the luminance, the information of the original SAR image can be preserved as possible during imaging, and the application of the right rank packing ratio characteristics and the deficit moment characteristics can reflect local details of the original SAR image. The method has high calculation efficiency, is suitable for the high-resolution SAR image and can effectively improve the visibility and the readability of a single channel, single-polarization and high-resolution SAR image.

Description

technical field [0001] The invention belongs to the technical field of high-resolution synthetic aperture radar (Synthetic Aperture Radar, SAR) image processing, in particular to a secondary imaging method based on single-temporal single-polarization high-resolution SAR images. Background technique [0002] SAR has all-weather and all-time imaging capabilities and can obtain high-resolution images of ground objects and targets in different frequency bands and different polarization conditions, providing people with a variety of very useful information. However, the analysis and processing of SAR images is far more difficult than the analysis and processing of ordinary optical images. The obstacle to the direct application of SAR images in civilian and military fields is that SAR images cannot be intuitively understood like optical images. As an imaging radar, the SAR system works in the microwave band and relies on coherent imaging. Therefore, its imaging mechanism is much m...

AI Technical Summary

Problems solved by technology

[0006] However, in actual calculations, it is usually difficult for us to obtain images of the same area in different phases, so it is necessary to study how to make full use of the information of single-temporal, single-polarization, high-resolution SAR images to achieve "secondary imaging"

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