Polarimetric Synthetic Aperture Radar Sea Surface Wind Field And Wave Remote Sensing Research

This thesis describes the simulation study and technique developments for the full polarimetric synthetic aperture radar(POLSAR) observations of ocean surface wind fields and ocean waves.It consists of six chapters.The contents of each chapter are arranged as follows.Chapter 1 is the introduction,which presents the background of POLSAR remote sensing of ocean surface wind fields and ocean waves,and the outline of this thesis.Chapter 2 briefly gives the basic theory of POLSAR,including the model of polarimetric scattering and principle of SAR imaging.Chapter 3 describes the simulation study of POLSAR observations of ocean surface wind fields,which helps to determine the best parameters for the SAR which will be loaded by the satellite HY-3 for its observation to ocean surface wind fields, including the radar frequency,look angle and polarization.Chapter 4 describes the simulation study of POLSAR imaging on ocean waves. We introduce the principle of SAR imaging on ocean waves at first,and then construct the dynamic ocean surface containing long swell on the basis of random ocean wave theory and use the Mapping and Projection Algorithm(MPA) to simulate POLSAR images of ocean wave.Chapter 5 describes the development of a new approach for extraction of ocean wave information including wave orientation,length and height using POLSAR data, proposed from the theory of target decomposition and parameterization,which can directly measure ocean slope and wave height without the complex modulation transfer function and is more convenient.Finally,the new approach is validated by the simulated SAR data.Chapter 6 presents the summary of this thesis and advice for future research.