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Method, device, device, and computer-readable storage medium for suppressing image orientation blur

A azimuth blur and image technology, applied in the field of image processing, can solve problems such as suppressing azimuth blur, achieve fast calculation speed, and achieve the effect of suppressing processing

Active Publication Date: 2021-08-17
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There is currently no effective way to suppress azimuth ambiguity perfectly

Method used

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  • Method, device, device, and computer-readable storage medium for suppressing image orientation blur
  • Method, device, device, and computer-readable storage medium for suppressing image orientation blur
  • Method, device, device, and computer-readable storage medium for suppressing image orientation blur

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Embodiment Construction

[0061] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0062] The embodiment of the present disclosure provides a method for suppressing image azimuth ambiguity, which uses the difference between the original target antenna pattern function and the fuzzy target antenna pattern function, starts with frequency domain signals, and uses an asymmetric weighting matrix to maximize the suppression of image The orientation in is ambiguous.

[0063] figure 1 is a flow chart of a method for suppressing image orientation blur provided by an embodiment of the present disclosure, such as figure 1 As shown, the method includes the following steps:

[0064] In step S11, the image signal to be processed is converted into the ...

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Abstract

The present disclosure relates to a method, device, equipment and computer-readable storage medium for suppressing image orientation blur. The method includes: converting the image signal to be processed into the frequency domain to obtain an initial frequency domain signal; obtaining an asymmetric weight matrix according to the original target antenna pattern function and the fuzzy target antenna pattern function; according to the asymmetric weight matrix, performing asymmetric weighting processing on the initial frequency domain signal; converting the frequency domain signal after the asymmetric weighting processing to a time domain to obtain an asymmetrically weighted image signal.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular, to a method, device, device, and computer-readable storage medium for suppressing image orientation blur. Background technique [0002] Synthetic Aperture Radar (SAR) is a high-resolution remote sensing radar that can observe the earth. Because spaceborne SAR can overcome the influence of rain, fog and dark night conditions, and realize all-day and all-weather earth observation, spaceborne SAR has broad application prospects in the fields of agriculture, ocean, disaster monitoring, and 3D mapping. [0003] In the actual space-borne SAR system, the entire Doppler bandwidth of the target is extremely large, but due to the limitation of the overall wave position design and data rate, the pulse repetition frequency cannot cover the entire bandwidth, so in the echo received by the satellite , the Doppler signal beyond the pulse repetition frequency will appear ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/003G06T2207/10044
Inventor 杨威高原陈杰王凯
Owner BEIHANG UNIV
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