Raw signal simulation is an important tool to test the effectiveness of the system parameters and imaging algorithms. A fast raw signal simulation method for multi-circular synthetic aperture imaging is proposed based on the inverse processing of the imaging algorithm and the nonuniform fast Fourier transform. The analytical description and processing procedure are presented. Simulation results of an ideal point target and a human model demonstrate the validity and effectiveness. Compared with the common time-domain method, the proposed method can achieve equivalent performance with higher efficiency.

中文翻译：

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太赫兹频率下多圆合成孔径成像的原始信号仿真

原始信号仿真是测试系统参数和成像算法有效性的重要工具。基于成像算法的逆处理和非均匀快速傅里叶变换，提出了一种用于多圆合成孔径成像的快速原始信号模拟方法。介绍了分析描述和处理程序。理想点目标和人体模型的仿真结果证明了有效性和有效性。与常见的时域方法相比，所提出的方法可以以更高的效率实现等效的性能。