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随着近期具有高分辨率的TerraSAR-X和COSMO-Sky传感器对地中海地区进行数据观测,使得SAR模拟器的潜力大大提高。本文提出了一种新的雷达成像装置,我们简单地把雷达图像模拟器假设为一个工具,它达到了一个精度和效率的平衡点。使用该装置能准确地获得SAR图像中对象的几何特性的模拟,而不仅仅是一个详细的辐射模拟。该模拟器是基于扩展射线跟踪程序来确定哪个表面通用对象是由后向散射产生的。后向散射系数是由朗伯–镜面混合模型白平衡计算获得的。该模拟器已经成功地应用于一个模型,即从高分辨率SAR影像中检测出三维人造物体。在这里,我们介绍其在两个完全不同结构中的应用,它们是长方形的平屋顶楼房建筑和埃及金字塔。
With the recent high-resolution TerraSAR-X and COSMO-Sky sensors for data observations in the Mediterranean, the potential for SAR simulators has been greatly enhanced. In this paper, we propose a new radar imaging device. We simply assume that the radar image simulator is a tool that achieves a balance of accuracy and efficiency. The device can accurately simulate the geometric characteristics of objects in SAR images, not just a detailed radiation simulation. The simulator is based on an extended ray tracing program to determine which surface generic object was created by backscatter. The backscatter coefficient is calculated from the white balance of the Lambert-specular blend model. The simulator has been successfully applied to a model that detects three-dimensional man-made objects from high-resolution SAR images. Here, we introduce its application in two completely different structures, which are rectangular flat-roofed buildings and Egyptian pyramids.