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A Beginner's Guide to Interferometric SAR Concepts and Signal Processing [AESS Tutorial IV]

机译:干涉式SAR概念和信号处理入门指南[AESS教程IV]

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Interferometric synthetic aperture radar (IFSAR, also abbreviated as InSAR) employs pairs of high resolution SAR images to generate high quality terrain elevation maps using phase interferometry methods. IFSAR provides an all-weather, dayight capability to generate measurements of terrain elevation on a dense grid of sample points with accuracies of ones of meters. Both spaceborne and airborne IFSAR systems are in use. In this paper we present a tutorial introduction to the concepts, techniques, and applications of IFSAR. After a brief introduction to digital elevation models (DEMs) and digital terrain elevation data (DTED), the fundamental IFSAR equation relating interferometric phase measurements to terrain elevation is derived from simple geometric considerations. The central section of the paper describes the major algorithmic steps required to form an IFSAR terrain map. Finally, variations of IFSAR for mapping terrain elevation or reflectivity changes are briefly described. A Web site at users.ece.gatech.edu/~mrichard/AESSJFSAR.htm provides access to color versions of many of the IFSAR images included in this paper.
机译:干涉式合成孔径雷达(IFSAR,也缩写为InSAR)采用成对的高分辨率SAR图像,通过相位干涉测量方法生成高质量的地形高程图。 IFSAR提供了全天候的昼/夜功能,可以在密集的采样点网格上以米为单位生成地形高程的测量值。机载IFSAR系统和机载IFSAR系统都在使用中。在本文中,我们将介绍IFSAR的概念,技术和应用。在简要介绍数字高程模型(DEM)和数字地形高程数据(DTED)之后,将干涉式相位测量与地形高程相关的基本IFSAR方程是从简单的几何考虑中得出的。本文的中心部分描述了形成IFSAR地形图所需的主要算法步骤。最后,简要描述了用于绘制地形高程或反射率变化的IFSAR的变化。在users.ece.gatech.edu/~mrichard/AESSJFSAR.htm上的网站可以访问本文中包含的许多IFSAR图像的彩色版本。

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