Simulation Study on the Effect of Wind Direction on SAR Imaging Shallow Water Bathymetry

A simulation model of SAR imaging of shallow water bathymetry has been developed according to SAR imaging mechanism of shallow water bathymetry and based on the software toolkit M4S. According to the simulation results of shallow water bathymetry and based on the analysis of shallow water bathymetry ERS-2 SAR images off the west south of Jilong Island, the relationship between the sea surface wind direction and SAR imaging shallow water bathymetry has been improved. The results showed that, the expression of SAR imaging shallow water bathymetry is mainly affected by the sea surface wind direction. When the wind direction is parallel or adverse to the current component in the direction of shallow water bathymetry, dark streaks or bright streaks appear on SAR images. Under crosswind, the bright and dark streaks are alternant. And the adverse wind direction is better for SAR imaging of shallow water bathymetry.