A Mathematical Analysis of Reconstruction Artifacts in Radar Limited Data Tomography

Elena Martinez
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Abstract

. In the study of tomography, there are often missing data values. This 4 leads artifacts to present themselves in data reconstructions. We investigate this 5 problem in a bistatic radar system that has a radio transmitter in a fixed location 6 and a receiver flying around the transmitter in a circular path. Our data is collected 7 by integrating over all ellipses in a given space that have the transmitter and receiver 8 as foci. We reconstruct this numerical data and analyze the artifacts that present 9 themselves when we place objects within and outside of the receiver’s path. Our 10 research demonstrates how objects outside the receiver’s path can create artifacts 11 inside the receiver’s path and vice versa. This shows an intrinsic limitation to a 12 method that works well when the scanned region outside the receiver’s path is clear.
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雷达有限数据层析成像重建伪影的数学分析
. 在断层扫描的研究中,经常存在数据值缺失的问题。这4导致工件在数据重构中表现出来。我们在一个双基地雷达系统中研究了这个问题,该系统在固定位置有一个无线电发射机,接收器在发射机周围以圆形路径飞行。我们的数据是通过对给定空间中以发射器和接收器为焦点的所有椭圆进行积分来收集的。我们重建这些数字数据,并分析当我们在接收器路径内外放置物体时呈现的伪影。我们的研究展示了接收者路径之外的对象如何在接收者路径内创建工件,反之亦然。这表明当接收器路径之外的扫描区域清晰时,12方法工作良好的内在局限性。
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