Doppler Radar Tomography (DRT) relies on spatial diversity from rotational motion of a target rather than spectral diversity from wide bandwidth signals. The slow-time k-space is a novel form of the spatial frequency space generated by the relative rotational motion of a target at a single radar frequency, which can be exploited for high-resolution target imaging by a narrowband radar with Doppler tomographic signal processing. This paper builds on a previously published work and demonstrates, with real experimental data, a unique and interesting characteristic of the slow-time k-space: it can be augmented and significantly enhance imaging resolution by signal processing. High resolution can reveal finer details in the image, providing more information to identify unknown targets detected by the radar.

中文翻译：

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关于多普勒雷达层析成像中的慢时k空间及其增强。

多普勒雷达层析成像（DRT）依靠目标旋转运动产生的空间分集，而不是宽带信号产生的频谱分集。慢时k空间是由目标在单个雷达频率下的相对旋转运动生成的空间频率空间的一种新颖形式，可将其用于多普勒层析成像信号处理的窄带雷达用于高分辨率目标成像。本文以先前发表的工作为基础，并通过真实的实验数据展示了慢时k空间的独特且有趣的特征：可以通过信号处理来增强它并显着提高成像分辨率。高分辨率可以揭示图像中更精细的细节，从而提供更多信息来识别雷达检测到的未知目标。