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Micro-Doppler imaging for fast rotating targets using illuminators of opportunity

机译：使用机会照明器对快速旋转的目标进行微多普勒成像

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摘要

In recent years the use of illuminators of opportunity for target detection and tracking has received renewed interest. Most aerial targets have some forms of fast rotating structures that cause micro-Doppler (m–D) effect and can be used to assist in the classification process. There is also a good potential to use m–D for imaging such rotating structure because they contain geometry characteristic information about the rotating structure. The imaging results are expected to provide richer information for classification purposes. Conventional inverse synthetic aperture radar requires small rotation angle as well as wideband waveform. Tomography provides an opportunity to image fast rotating targets for narrowband continuous wave radar using m–D information only. This study first introduces the foundations of m–D imaging. Then, the simulation results are presented. Finally, the field experiments are described, together with the illustration and analysis of typical experimental results. Both the simulations and experimental data validate the effectiveness of the method.
机译：近年来，使用机会照明器进行目标检测和跟踪引起了新的兴趣。大多数空中目标都具有某种形式的快速旋转结构，会引起微多普勒（m–D）效应，可用于辅助分类过程。使用m–D对这种旋转结构进行成像还有很大的潜力，因为它们包含有关旋转结构的几何特征信息。成像结果有望为分类提供更丰富的信息。常规的逆合成孔径雷达需要小的旋转角度以及宽带波形。层析成像技术仅使用m-D信息即可为窄带连续波雷达的快速旋转目标成像。本研究首先介绍了m–D成像的基础。然后，给出了仿真结果。最后，描述了野外实验，并举例说明和分析了典型的实验结果。仿真和实验数据均验证了该方法的有效性。

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