Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Modification of Freeman-Durden Decomposition to Eliminate the Negative Power Problem

Version 1 : Received: 8 December 2020 / Approved: 9 December 2020 / Online: 9 December 2020 (16:10:37 CET)

How to cite: Akhmadiya, A.; Moldamurat, K.; Nabiyev, N. Modification of Freeman-Durden Decomposition to Eliminate the Negative Power Problem. Preprints 2020, 2020120234 (doi: 10.20944/preprints202012.0234.v1). Akhmadiya, A.; Moldamurat, K.; Nabiyev, N. Modification of Freeman-Durden Decomposition to Eliminate the Negative Power Problem. Preprints 2020, 2020120234 (doi: 10.20944/preprints202012.0234.v1).

Abstract

A new method in which completely eliminated the negative value of the scattering power is proposed in this paper. Primarily, here are presented the Freeman-Durden decomposition of the scattering powers, which are computed by using the coherency matrix elements with rotation and without rotation. Secondly, this paper investigates the reasons of the occurrence of negative values of the scattering powers. Then using the modification like in algorithm proposed by Yamaguchi for G4U, it was applied for the algorithm of Freeman-Durden decomposition to eliminate negative values. In this research, Radarsat-2 radar remote sensing data were used, which are acquired for study area Yushu County, Qinghai province, China. At the end, the comparison results of Yamaguchi G4U and a modified Freeman-Durden decompositions were presented.

Subject Areas

Coherency matrix; Freeman-Durden decomposition; General four-component decomposition with unitary transformation (G4U); scattering power; rotation

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