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Polarimetric SAR image decomposition method and storage medium

An image and full polarization technology, applied in the field of microwave remote sensing, can solve problems such as negative power

Inactive Publication Date: 2019-11-05
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology

[0006] In view of the above-mentioned technical problems existing in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a polarization SAR image decomposition method, which can reduce the overestimation of volume scattering power and avoid even-order scattering and surface scattering. The problem of negative power to solve the problem of negative power in the existing scattering-based model decomposition

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  • Polarimetric SAR image decomposition method and storage medium

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[0072] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0073] It should be understood that various modifications may be made to the embodiments disclosed herein. Accordingly, the above description should not be viewed as limiting, but only as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.

[0074] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the general description of the application given above and the detailed description of the embodiments given below, serve to explain the embodiments of the application. principle.

[0075] These and other characteristics of the present appli...

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Abstract

The invention discloses a polarimetric SAR image decomposition method and a storage medium. The polarimetric SAR image decomposition method comprises the steps of acquiring a polarimetric coherence matrix T of fully-polarimetric SAR image data; judging a dominant scattering mechanism at each pixel point in the fully-polarimetric SAR image data, and correcting the coherence matrix T at each pixel point according to the corresponding dominant scattering mechanism to obtain a corrected coherence matrix T'; conducting four-component target decomposition on the corrected coherence matrix T', and solving power values of spiral volume scattering, volume scattering, surface scattering and even-numbered scattering. According to the method, corresponding azimuth angle compensation and phase angle rotation operation is conducted according to the dominant mechanism of each pixel point, the overestimation phenomenon of volume scattering is greatly reduced, and the problem of negative power generated by surface scattering and even-numbered scattering is solved; in addition, the adjustment of a self-adaptive volume scattering model is introduced so that the ratios of HH and VV components can continuously change, and the decomposition result is closer to the scattering mechanism of an actual ground object target.

Description

technical field [0001] The invention relates to the technical field of microwave remote sensing, in particular to a polarization SAR image decomposition method and a storage medium. Background technique [0002] With the development of microwave remote sensing technology, polarimetric synthetic aperture radar (polarimetric SAR) has become an important research direction in the field of microwave remote sensing. band, space-borne, airborne and other full-polarization SAR systems have appeared one after another. Polarized SAR irradiates the ground by emitting electromagnetic waves with horizontal polarization H or vertical polarization V, and receiving scattered echoes with horizontal polarization H and vertical polarization V in the ground area, so as to obtain the polarization scattering of the observation area matrix. The polarization scattering matrix contains detailed information of the observed target, including electromagnetic scattering characteristics such as surfac...

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/9005G01S13/9076
Inventor 谭维贤孙博绒乞耀龙黄平平徐伟高志奇杨文
Owner INNER MONGOLIA UNIV OF TECH
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