Monte Carlo simulation for two-dimensional SAR ocean wave spectrum

摘要

Synthetic aperture radar (SAR)have been an extremely valuable tool to study, observe and surveillance the ocean states. In contrast to a stati1onary scene, the imaging mechanisms of ocean wave are more complicated due to stochastic character of its orbit motions and wind effect. The relationship between SAR imagery and the actual ocean waves is an intriguing issue. Simulations can gain good insight into interpreting the physical aspect questions. A straightforward method for dealing with the ocean-SAR mapping transform is to compute the SAR image with pixel-by-pixel. Monte-carlo simulations have been proposed for this purpose. We described the model of ocean wave spectrum and the mapping transform between ocean-SAR. In the framework of monte carlo simulation methods, two-dimensional JONSWAP ocean wave spectrum with spreading function is developed; When the angle between the main ocean wave traveling direction and the SAR flight direction is 0, 45刟, 90刟, respectively, we simulated the ocean-SAR mapping transform and some meaningful results are exhibited and discussed.