星载SAR海面顺轨干涉仿真研究

星载SAR海面顺轨干涉(ATI)仿真对理解海面ATI成像机制、指导海洋遥感SAR系统设计具有重要意义.在基于时序的星裁SAR海面场景回波生成基础上,对海面ATI展开仿真研究,内容包括顺轨编队设计、海面建模、海面电磁散射建模、动态场景回波生成、SAR成像和AtI数据处理,给出单色波和分形海面仿真实例,ATI处理结果表明该星载SAR海面顺轨干涉仿真思路有效.

Study on Ocean Along-track Interferometric Spaceborne SAR

The simulation of along-track interferometric (ATI) spaceborne synthetic aperture radar (SAR) is crucial for understanding the ATI imaging mechanism of ocean scene,and for directing the spaceborne SAR system design. According to the raw signal simulation procedure of ocean scene based on time sequence,ATI simulation pertaining to an ocean scene was proposed. It incorporates the ATI formation design,the ocean surface modeling,the ocean electromagnetic scattering modeling,the echo generating procedure of dynamic scene,the SAR imaging and the ATI date processing. Simulation experiments referring to a single cosine wave and a fractal ocean surface are provided,which validates the method of ATI simulation for ocean scene.