摘要
Hybrid-polarimetric SAR(synthetic aperture radar) is a new SAR mode, with relatively simple architecture, low cost, and wide swath, which will be carried by several Earth-observing systems from now to the near future. Here, we show how the second Stokes parameter of hybrid-polarimetric SAR can be employed to detect oil on the ocean surface using the classic well-known Otsu threshold methodology, in relation to contributions from different polarizations and dampening effects on backscatter intensity, neglecting the specific scattering mechanisms and oil types for an oil-covered surface. The detection methodology is demonstrated to be reliable in three example cases: oil-on-water experiments conducted by the Norwegian Clean Seas Association, natural oil seeps from the Gulf of Mexico, and observations from the Deep Water Horizon oil spill disaster in 2010.
Hybrid-polarimetric SAR （synthetic aperture radar） is a new SAR mode, with relatively simple architecture, low cost, and wide swath, which will be carried by several Earth-observing systems from now to the near future. Here, we show how the second Stokes parameter of hybrid-polarimetric SAR can be employed to detect oil on the ocean surface using the classic well-known Otsu threshold methodology, in relation to contributions from different polarizations and dampening ef- fects on backscatter intensity, neglecting the specific scattering mechanisms and oil types for an oil-covered surface. The de- tection methodology is demonstrated to be reliable in three example cases： oil-on-water experiments conducted by the Norwe- gian Clean Seas Association, natural oil seeps from the Gulf of Mexico, and observations from the Deep Water Horizon oil spill disaster in 2010.
基金
supported by the National Natural Science Foundation of China(Grant No.41306189)
the Knowledge Innovative Program of the Chinese Academy of Sciences
the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
the Canadian Program on Energy Research and Development
the Canadian Space Agency GRIP initiative
