Polarimetric entropy of the ocean surface with a two-scale scattering model

详细信息    查看全文

• 作者：Wenguang Wang (1)
  Haiyan Li (2) (3)
  Xingai Song (4)
  
• 关键词：entropy ; ocean wave spectrum ; polarimetric synthetic aperture radar ; Polsar ; two ; scale scattering model ; contrast enhancement
• 刊名：Acta Oceanologica Sinica
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：33
• 期：1
• 页码：102-108
• 全文大小：468 KB
• 作者单位：Wenguang Wang (1)
  Haiyan Li (2) (3)
  Xingai Song (4)
  
  1. School of Electronic and Information Engineering, Beihang University, Beijing, 100191, China
  2. Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences, Beijing, 100049, China
  3. University of the Chinese Academy of Sciences, Beijing, 100049, China
  4. National Satellite Ocean Application Service, State Oceanic Administration, Beijing, 100081, China
  
• ISSN：1869-1099

文摘

The relationships among an ocean wave spectrum, a fully polarimetric coherence matrix, and radar parameters are deduced with an electromagnetic wave theory. Furthermore, the relationship between the polarimetric entropy and ocean wave spectrum is established based on the definition of entropy and a two-scale scattering model of the ocean surface. It is the first time that the polarimetric entropy of the ocean surface is presented in theory. Meanwhile, the relationships among the fully polarimetric entropy and the parameters related to radar and ocean are discussed. The study is the basis of further monitoring targets on the ocean surface and deriving oceanic information with the entropy from the ocean surface. The contrast enhancement between human-made targets and the ocean surface with the entropy is presented with quad-pol airborne synthetic aperture radar (AIRSAR) data.