Research on the Spaceborne SAR Image Processing and Feature Extraction for Ocean Fronts Detection
This paper discusses the interaction of short surface waves with shearing and converging current. On the basis of the spectral perturbations caused by the interaction, the influences of the interaction on the ocean surface wave spectral density and gradients are analyzed. A two-scale electromagnetic scattering model explains not only the interaction between short-wave and radar backscatter, but also the interaction between long-wave and radar backscattering. Then SAR imaging mechanism of ocean fronts is derived. In SAR images, the scale of ocean fronts is 2-3 orders larger than that of sea waves. Most of wave information is filtered out by the 2-D spatial spectrum analytics. Then the characteristic information of ocean fronts is extracted by digital image processing technology. Thus, information processing means by which characteristic information of ocean fronts can be extracted from SAR images is constructed.
ocean fronts SAR image processing feature extraction
Zhang Bentao Chen Biao Gao Guoxing
Institute of Remote Sensing Navy Submarine Academy Qingdao, China
国际会议
成都
英文
473-476
2010-06-12（万方平台首次上网日期，不代表论文的发表时间）