中文摘要：

首先阐述了研究基于数字高程模型（DEM）的SAR图像模拟的重要性。然后针对SAR图像的几何特点， 并顾及地面坡度、成像距离等因素对雷达波后向散射强度的影响， 设计了基于强度积分的SAR图像模拟方案。根据Leberl构像模型计算SAR图像的像点坐标， 采用强度积分策略对各点处的强度进行模拟， 并进行归一化处理。通过仿真实验得到了满意的SAR模拟图像， 验证了该模拟方案的正确性和有效性。

英文摘要：

First, the paper expounded the importance of study on simulating SAR images based on DEM （ Digital Elevation Model）. And then aiming at the geometrical feature of right SAR images, the simulation project of SAR images was designed based on DEM, which considered the ground slope, and the distance of imaging, etc. Adopting Lerbel imaging model to compute the coordinate of SAR image, and introducing integral of magnitude to simulate the intensity, after normalization satisfied SAR images were got by simulation experiments, which validated the simulation project was right and valid.