In this paper, a comprehensive form of the range migration algorithm (RMA) is analytically derived for reconstructing the reflectivity function using synthetic aperture imaging techniques. Specifically, amplitude compensation, in addition to the typical phase compensation, is included in the development of the matched filter of the RMA, with the result herein referred to as the amplitude compensated RMA (AC-RMA). To illustrate the improvements offered by the AC-RMA, simulation and measurement (at Ka-band, 26.5 - 40 GHz) are performed to reconstruct the reflectivity function of a target using both RMA and AC-RMA algorithms. The results prove that the AC-RMA is a robust algorithm that can successfully reconstruct the reflectivity function of a target with higher accuracy, regardless of its dielectric properties, including scenarios with low contrast between the dielectric properties of the background and target in the presence of noise. This approach is also independent of the bandwidth of the imaging system and is applicable to multilayer media as well. In addition, while the formulation of the AC-RMA is more complicated than the traditional (phase compensation only) RMA, the processing time necessary for images created with the AC-RMA is just 1.2 times greater than that of the traditional RMA processing time.

中文翻译：

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综合双静态幅度补偿距离偏移算法（AC-RMA）


在本文中，分析推导了距离偏移算法（RMA）的综合形式，用于使用合成孔径成像技术重建反射率函数。具体来说，RMA匹配滤波器的开发除了典型的相位补偿之外，还包括幅度补偿，本文将其结果称为幅度补偿RMA（AC-RMA）。为了说明 AC-RMA 提供的改进，进行了仿真和测量（在 Ka 频段，26.5 - 40 GHz），以使用 RMA 和 AC-RMA 算法重建目标的反射率函数。结果证明，AC-RMA 是一种稳健的算法，无论其介电特性如何，都可以以更高的精度成功重建目标的反射率函数，包括存在背景和目标介电特性之间对比度较低的情况。噪音。这种方法也独立于成像系统的带宽，并且也适用于多层介质。此外，虽然AC-RMA的公式比传统（仅相位补偿）RMA更复杂，但使用AC-RMA创建图像所需的处理时间仅是传统RMA处理时间的1.2倍。