%0 Journal Article
%T Monitoring of Organic Pollutants in River Based on Polarimetric SAR<br>基于极化SAR的河流有机物污染监测研究
%A CHEN Jiong
%A JIA Hai-feng
%A YANG Jian
%A CHEN Yu-rong
%A <br>陈炯
%A 贾海峰
%A 杨健
%A 陈玉荣
%J 环境科学
%D 2010
%I 
%X The rivers with the distinct gradient of water quality in the southern region of China were selected as a case study. The objective of this study was to develop the monitoring and evaluating technology of the water quality based on C-band polarimetric synthetic aperture radar (POLSAR). The random rough surface scattering model to describe the electromagnetic scattering characteristics of polluted water was briefly introduced. The potential effect of organic pollutants to the scattering model and backscattering coefficient were explored. The simultaneously obtained POLSAR data and the measured water quality indexes were analyzed. By comparing the POLSAR data and the water quality indexes, it could be observed that the chemical oxygen demand (COD) was in proportional to the ratio between HH and VV backscattering coefficients, which matched the analysis based on electromagnetic scattering theory. A fitting model was proposed to retrieve the chemical oxygen demand by ratio between HH and VV channel backscattering coefficients using least square method, with the fit coefficient of 0.90. In this study, the model using the ratio between HH and VV backscattering coefficients was established, which was mainly based on the analysis of experimental results, and was also supported by theoretical interpretation.
%K polarimetric synthetic aperture radar (POLSAR)
%K organic pollutants
%K chemical oxygen demand (COD)
%K backscattering coefficient
%K microwave remote sensing<br>极化合成孔径雷达(极化SAR)
%K 有机物污染
%K 化学需氧量(COD)
%K 后向散射系数
%K 微波遥感
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=543E5CDD6E94E0D4F00E610AE96DBDD0&yid=140ECF96957D60B2&vid=4AD960B5AD2D111A&iid=9CF7A0430CBB2DFD&sid=FA004A8A4ED1540B&eid=885CEFEC57DA488F&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=0