Determination and analysis method for three-layer S-RVoG scattering model of inclined forest area

Abstract

The invention provides a determination and analysis method for a three-layer S-RVoG (sloped random volume over ground) scattering model of an inclined forest area. The invention comprises the following steps that: S1, showing a schematic RVoG model scattering diagram, and focusing on the deducing and the analyzing of a coherence coefficient expression of an RVoG model; S2, increasing the scattering component of a trunk layer, and deducing a coherence expression of a three-layer scattering model in detail, based on the RVoG model; S3, considering the influence of local terrain slopes, modifyinga vertical structure function, deducing an S-RVoG model, and analyzing the model; and S4, considering the scattering component of the trunk layer, deducing a three-layer S-RVoG model, and analyzing the influence of each physical parameter on coherence, based on the S-RVoG model. The determination and analysis method solves the problem that the RVoG model is fuzzy in the description of the naturalmountain area scattering process, improves the vegetation coherence scattering model, and improves the accuracy of the polarimetric SAR interferometry vegetation in height inversion.

Description

technical field [0001] The invention belongs to the technical field of remote sensing image processing, in particular to a method for determining and analyzing a three-layer S-RVoG scattering model in an inclined forest area. Background technique [0002] Forest ecosystems play an extremely important role in the global carbon cycle process and the accurate monitoring of large-scale environmental changes, while the ground measurement of vegetation height is not only expensive, time-consuming, but also difficult to obtain large-scale data. The emergence of Polarimetric Interferometric Synthetic Aperture Radar (PolInSAR) technology provides an effective solution to this problem. PolInSAR combines polarimetric synthetic aperture radar (PolSAR) and interferometric synthetic aperture radar (InSAR), and has the advantages that PolSAR can distinguish the fine structure of target scatterers and InSAR can obtain target elevation information. Through the interferometric analysis of fu...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the defects existing in the existing vegetation coherent scattering model. The present invention combines the influence of local terrain slope and trunk layer scattering characteristics, and proposes a method for determining and analyzing the three-layer S-RVoG scattering model in inclined forest areas.

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