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Method and device for analyzing influence of solar cell panel on RCS of SAR calibrator

A solar panel and impact analysis technology, applied in the field of radar detection, can solve problems such as errors, affecting image radiation accuracy, lack of quantitative analysis methods, etc., to achieve the effect of improving accuracy and eliminating errors

Active Publication Date: 2021-05-28
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

[0005] (1) The RCS of the solar panel itself may cause errors to the nominal RCS of the self-powered SAR radiation scaler, and ultimately affect the image radiation accuracy
[0006] (2) There is no effective quantitative analysis method for the RCS characteristics of solar panels under different wave bands, different polarizations, and different incident angles, and it is difficult to evaluate its impact on the calibration accuracy of SAR radiation

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  • Method and device for analyzing influence of solar cell panel on RCS of SAR calibrator

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Embodiment Construction

[0038] 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.

[0039] 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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Abstract

The invention provides a method for analyzing the influence of a solar cell panel on the RCS of an SAR calibrator. The method comprises the steps of S1 obtaining SAR image data which comprises the solar cell panel and n effective point targets; S2 sequentially extracting energy of n effective point targets; S3 measuring calibration constants corresponding to the n effective point targets according to the energy of the n effective point targets, calculating the statistical average value of the n calibration constants, and the statistical average value being the calibration constant K of the SAR image data; S4 selecting rectangular window data with a preset pixel size from the SAR image data, and extracting the energy I of the solar cell panel in the rectangular window data; S5 calculating the actual area A of the solar cell panel in the rectangular window data in the step S4; and S6 according to the calibration constant K, the energy I and the actual area A, obtaining the unit area equivalent RCS of the solar cell panel. The invention further provides a device for analyzing the influence of the solar cell panel on the RCS of the SAR calibrator.

Description

technical field [0001] The disclosure belongs to the technical field of radar detection, and in particular relates to a method and device for analyzing the influence of a solar panel on a SAR scaler RCS. Background technique [0002] Synthetic Aperture Radar (SAR) is a technology capable of obtaining high-resolution microwave remote sensing images. It has the characteristics of realizing all-day and all-weather earth observation without being limited by light and climate conditions, and can accurately invert images based on image data. The radar cross section or backscatter coefficient of the target. Generally, radiometric calibration is required in quantitative applications involving SAR image data, including absolute radiometric calibration and relative radiometric calibration. For space-borne SAR systems, passive and active SAR radiation calibrators with fixed terrestrial calibration fields are often used to complete them, and they are deployed in open field areas that d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/90
CPCG01S7/40G01S13/90Y02E10/50
Inventor 邢楷初洪峻王宇杜少岩邱天齐阳牟静雯
Owner AEROSPACE INFORMATION RES INST CAS
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