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Diffraction tomographic imaging with a circular array

机译:圆形阵列衍射层析成像

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摘要

A new approach of imaging an object profile from the scatterednwavefield, which is measured using a large (far field approximation)ncircular array of sensors surrounding the object, is described. It isnshown that the measured field is itself proportional to the Fourierntransform of the object. Consequently, as compared to the existingnmethods, such as back propagation method for a linear array, our methodnovercomes the well known effects of the finite window in numericalnevaluation of the Fourier transform of the measured scattered field.nThis results into improved reconstruction
机译:描述了一种从散射波场对物体轮廓成像的新方法,该方法是使用围绕物体的大型(远场近似)n圆形传感器阵列测量的。没有显示出被测场本身与物体的傅立叶变换成比例。因此,与现有的方法(例如线性阵列的反向传播方法)相比,我们的方法克服了有限窗口在测量散射场的傅里叶变换的数值评估中所产生的众所周知的影响。

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