Multi-angle SAR dynamic imaging detection method and device
A technology of dynamic imaging and detection method, applied in measurement devices, image enhancement, image analysis and other directions, can solve the problem of dynamic changes of information in typical ground areas without effective detection methods, and achieve the effect of effective detection and reduction of detection errors.
Active Publication Date: 2022-03-25
AEROSPACE INFORMATION RES INST CAS
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However, there is no effective detection method for the dynamic changes of typical area information on the ground under different observation angles.
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[0028] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.
[0029] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features, ...
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The invention provides a multi-angle SAR (Synthetic Aperture Radar) dynamic imaging detection method, which comprises the following steps of: dividing a preset angle aperture into N sub-apertures by utilizing a sub-aperture division method, and acquiring N frames of initial images corresponding to the N sub-apertures by adopting a backward projection algorithm; wherein N is greater than or equal to 2; performing radiation correction on two adjacent frames of initial images in the N frames of initial images to obtain N frames of images after amplitude normalization; performing difference fusion ratio processing on two adjacent frames of images in the N frames of images to obtain N-1 frames of difference images; morphological processing is carried out on the N-1 frames of difference images, CFAR detection is carried out on the morphologically processed N-1 frames of difference images, and N-1 frames of detection images are generated; wherein each frame of detection image represents the difference between two adjacent frames of initial images in the N frames of initial images. The invention further provides a multi-angle SAR dynamic imaging detection device, electronic equipment, a storage medium and a computer program product.
Description
technical field [0001] The present disclosure relates to the technical field of synthetic aperture radar signal processing, and in particular to a multi-angle SAR dynamic imaging detection method, device, electronic equipment, storage medium and program product. Background technique [0002] Synthetic aperture radar (SAR) is a high-resolution imaging radar with the advantages of all-day and all-weather imaging. The range resolution is improved through a large time-bandwidth product, and the high azimuth resolution is obtained through a wide synthetic aperture. In spotlight SAR wide-angle imaging, as the observation angle increases, more information about typical ground targets can be obtained, which plays an important role in target recognition, tracking, and detection. [0003] Conventional change detection is the difference or ratio of two SAR images obtained in different phases to obtain the changed area, which is mainly used in the detection of slow changes over time. ...
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IPC IPC(8): G06T5/00G06T5/30G06T7/00G01S13/90
CPCG06T5/30G06T7/0002G01S13/9021G06T2207/20036G06T5/90G06T5/80
Inventor 洪文林赟张治国张汉卿申文杰胡玉新
Owner AEROSPACE INFORMATION RES INST CAS