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Experiments on a Ground-Based Tomographic Synthetic Aperture Radar

机译：地面层析成像合成孔径雷达的实验

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This paper presents the development and experiment of three-dimensional image formation by using a ground-based tomographic synthetic aperture radar (GB-TomoSAR) system. GB-TomoSAR formulates two-dimensional synthetic aperture by the motion of antennae, both in azimuth and vertical directions. After range compression, three-dimensional image focusing is performed by applying Deramp-FFT (Fast Fourier Transform) algorithms, both in azimuth and vertical directions. Geometric and radiometric calibrations were applied to make an image cube, which is then projected into range-azimuth and range-vertical cross-sections for visualization. An experiment with a C-band GB-TomoSAR system with a scan length of 2.49 m and 1.86 m in azimuth and vertical-direction, respectively, shows distinctive three-dimensional radar backscattering of stable buildings and roads with resolutions similar to the theoretical values. Unstable objects such as trees and moving cars generate severe noise due to decorrelation during the eight-hour image-acquisition time.
机译：本文介绍了使用地面断层成像合成孔径雷达（GB-TomoSAR）系统进行三维图像形成的开发和实验。 GB-TomoSAR通过天线在方位角和垂直方向上的运动来表示二维合成孔径。进行距离压缩后，通过应用Deramp-FFT（快速傅立叶变换）算法在方位和垂直方向上执行三维图像聚焦。应用几何和辐射度校准来制作图像立方体，然后将其投影到范围方位角和范围垂直截面中以进行可视化。使用C波段GB-TomoSAR系统进行的实验分别在方位角和垂直方向上扫描长度为2.49 m和1.86 m，显示了稳定建筑物和道路的独特三维雷达后向散射，其分辨率与理论值相似。在八小时的图像采集时间内，由于去相关，树木和移动的汽车等不稳定物体会产生严重的噪音。

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