Detection and Classification of China's Bohai Sea Ice by Using RADARSAT SAR and DMSP SSM/I

摘要

The shoreice at the middle latitudes, such as in the China's Bohai Sea is only lasted for few months during the winter season. Its physical constitutes and temporal and spatial variability are different from the polar regions. This paper, using the image data from active RADARSAT SAR and passive DMSP SSM/I measurements over the Bohai Sea ice, is to present a correlated analysis for sea ice detection and classification. By using numerical modeling of scattering and radiative transfer of a layer of sea ice, spatial variation of the Bohai Sea shoreice is studied. The scattering index (PI), polarization index (PI), and the polarization ratio (PR) from passive SSM/I observation are defined to detect the existence of sea ice. Further, using the back-scattering measured by high resolution SAR of RADARSAT, the sea ice of the Bohai Sea can be further classified.