Method and device for testing SAR satellite backscattering coefficient image
A technology of backscattering coefficient and inspection method, which is applied in the field of image radiation characteristic inspection, can solve problems such as inability to effectively meet application requirements, cumbersome calculations, complex models, etc., and achieve the effect of reducing manual repetitive work.
Pending Publication Date: 2022-03-04
AEROSPACE INFORMATION RES INST CAS +1
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[0005] The invention provides a method and device for inspecting the SAR satellite backscatter coefficient image, which is used to solve the complex model and cumbersome calculation of the radiation characteristic inspection of the SAR satellite backscatter coefficient image in the prior art, and cannot effectively meet the requirements of complex land conditions. The shortcomings of the application requirements in the background of objects, realize the SAR satellite backscatter coefficient image inspection under the background of complex land objects, the model is simple and easy to implement
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[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0043] With the continuous improvement of SAR resolution and continuous improvement of performance, the qualitative analysis of SAR images using image position, texture, shape and other information can no longer meet the application needs of many industries. Therefore, it is urgent to promote the quantitative research of SAR images. Further broaden the application range of SAR and tap the app...
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The invention provides a method and a device for checking a backscattering coefficient image of an SAR (Synthetic Aperture Radar) satellite. The method comprises the following steps of: remotely controlling and adjusting an automatic corner reflector fixedly arranged in an authenticity checking site according to observation parameters during transit imaging of the SAR satellite; obtaining an SAR satellite backscattering coefficient image according to the SAR image synchronously obtained by the SAR satellite and the adjusted attitude angle of the automatic corner reflector; according to the characteristics of the automatic corner reflector in the backscattering coefficient image, obtaining a radar scattering sectional area measurement value of the automatic corner reflector; and analyzing the measured value by using the theoretical value of the radar cross section of the automatic corner reflector to obtain a test result of the SAR satellite backscattering coefficient image. The method is used for overcoming the defects that in the prior art, a model for checking the radiation characteristics of the SAR satellite backscattering coefficient image is complex, calculation is tedious, and application requirements under the background of complex land features cannot be effectively met, checking of the SAR satellite backscattering coefficient image under the background of the complex land features is achieved, and the model is simple and easy to achieve.
Description
technical field [0001] The invention relates to the technical field of inspection of image radiation characteristics of SAR satellites, in particular to a method and device for inspecting backscatter coefficient images of SAR satellites. Background technique [0002] Synthetic Aperture Radar (SAR) has all-weather and all-weather earth observation capabilities, and is not interfered by bad weather such as clouds and rain. , topographic survey and marine dynamic environment survey are of great significance. With the continuous improvement of SAR resolution and continuous improvement of performance, the qualitative analysis of SAR images using image position, texture, shape and other information can no longer meet the application needs of many industries. Therefore, it is urgent to promote the quantitative research of SAR images. Further broaden the application range of SAR and tap the application potential of SAR. The radiation characteristics of SAR images will affect the e...
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IPC IPC(8): G01S7/41G01S7/40
CPCG01S7/41G01S7/40
Inventor 张风丽李璐黄绮琪明峰焦雅楠庞雷邵芸
Owner AEROSPACE INFORMATION RES INST CAS