A desert parameter inversion method, device, equipment and storage medium

Abstract

The invention discloses a desert parameter inversion method, device, equipment and storage medium, wherein the method includes: preprocessing two SAR images to obtain the coherence between the two images; The dielectric constant of the desert area is calculated by the derivation model; considering the refraction effect of the SAR signal in the desert area, the dielectric constant is used to correct the vertical effective wave number of the microwave entering the desert area; combined with the coherence and vertical effective wave number obtained above, the scattering model is used Inversion of microwave penetration depth in desert area. The present invention applies the scattering model based on complex coherence to the inversion of the penetration depth in the desert area. Since only the coherence information of the SAR image is needed, it can be realized with less observations; and it can perform large-scale inversion, and the applicability It provides a new way of thinking and means for exploring the penetration ability of microwaves in desert areas.

Description

technical field [0001] The invention relates to the field of parameter inversion of synthetic aperture radar technology (InSAR) in desert areas, in particular to a desert parameter inversion method, device, equipment and storage medium. Background technique [0002] Desert cover is an important part of the earth's surface system, accounting for 5% of the earth's land area, and contains rich natural resources, such as oil, natural gas, groundwater and so on. Therefore, actively carrying out large-scale desert subsurface monitoring has important research value for resource exploration, archaeological research, and climate change analysis. However, traditional optical remote sensing can only monitor changes in the displacement of the desert surface, and does not have the ability to penetrate, so it cannot detect the internal structure of the desert. The SAR operates in the microwave frequency band and has significant penetration capability in extremely arid desert coverage are...

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Problems solved by technology

The differential interferometry method is easy to cause error aliasing, which is difficult to distinguish, and the obtained penetration depth results have large errors; most of the existing methods for the penetration depth of desert areas based on scattering models are based on simulation experiments, and there are many model input parameters, which cannot be obtained. widely used

Moreover, the penetration of short-band SAR (such as: X, C-band) is extremely limited, and its contribution to the inversion of microwave penetration depth in desert areas is limited. : L, P band) relatively lack

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