A Fundamental Study on Vehicle Detection in Flooded Urban Area Using Quad-Polarimetric SAR Data

Takanori ISHIKURO  Ryoichi SATO  Yoshio YAMAGUCHI  Hiroyoshi YAMADA  

IEICE TRANSACTIONS on Electronics   Vol.E102-C   No.1   pp.38-45
Publication Date: 2019/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E102.C.38
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
radar polarimetry,  vehicle detection,  flooded urban area,  disaster mitigation,  co-pol ratio phase difference,  

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In this paper, we propose a simple algorithm for detecting a vehicle trapped in flooded urban area by using quad-polarimetric SAR data. The four-component scattering power decomposition and phase difference of HH-VV co-pol ratio are effectively used in the proposed algorithm. Here we carry out polarimetric scattering measurement for a scaled vehicle model surrounded by two buildings model in an anechoic chamber, to acquire the quad-polarimetric SAR data. It is confirmed from the results of the image analysis for the measured SAR data that the proposed algorithm for vehicle detection works well even under severe environment where the vehicle is set in the shadow of the building and/or the alignment of the vehicle or the buildings is obliquely oriented to direction of the radar line of sight.