【摘要】 合成孔径雷达具有全天时、全天候成像的优点,在遥感领域获得了越来越多的应用。SAR原始数据对于SAR信号处理和成像算法研究是必不可少的,但是真实数据的获取不方便且代价高,因此对于SAR原始回波数据的仿真成为研究热点。一般通过电磁仿真来模拟回波数据的计算量过大,效率较低。为了解决这一问题,文中在英伟达公司推出的光线跟踪开发工具包Optix基础上设计了一种应用于SAR大场景实时仿真的软件,即把计算机图形学中的光线跟踪技术应用到SAR回波仿真中,实现对三维复杂场景高效、精确的仿真。更多还原

【Abstract】 Synthetic aperture radar gets more and more application in the field of remote sensing because of its all-time and all-weather imaging advantages. SAR raw data is essential for SAR signal processing and imaging algorithm research,but the real data is expensive and infexble,so for SAR raw echo data of simulation become a research hotspot. For large scenes and complex targets,electromagnetic computation is too time-consuming. In order to solve this problem,this paper introduced a SAR scene real-time simulation software based on Nvidia Optix development kit of ray tracing,namely the Ray tracing of computer graphics technology is applied to the SAR echo simulation,implementing the efficient,accurate simulation of three dimensional complex scene.更多还原