Millimeter-Wave Imaging at 652 Frames per Second
Millimeter-Wave Imaging at 652 Frames per Second
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DOI：
10.1109/jmw.2021.3079287
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发表时间：
2021-07-01
影响因子：
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通讯作者：
Nanzer, Jeffrey A.
中科院分区：
文献类型：
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作者：
Vakalis, Stavros;Chen, Daniel;Nanzer, Jeffrey A.
毫米波技术有可能彻底改变电子成像领域，因为它能够通过雾和烟雾等遮挡物或通过服装和行李等材料产生高分辨率的图像。虽然近年来毫米波技术变得越来越小，越来越具有商业可行性，但现有的毫米波成像方法受到图像采集时间的限制，阻碍了它们的广泛采用。在这项工作中，我们展示了一种毫米波成像的新方法，该方法使用噪声信号的传输与单元级38 GHz数字接收阵列配对，以每秒652帧的速度生成毫米波图像。使用一种新的并行数据采集和图像形成方法，与作者之前的工作相比，延迟减少了近50倍，产生的帧速率比任何其他报道的毫米波成像系统快26倍以上。这种成像能力极大地扩展了毫米波商业和科学成像应用的机会，包括违禁品探测、消费者传感、工业成像和无损评估。我们讨论了毫米波的硬件结构、成像算法，并给出了实验高速毫米波成像。
Millimeter-wave technology has the potential to revolutionize the field of electronic imaging due to its ability to generate images with high resolution through obscurants like fog and smoke or through materials such as garments and baggage. While millimeter-wave technology has become smaller and more commercially viable in recent years, existing millimeter-wave imaging approaches have been limited by image acquisition time, inhibiting their wide adoption. In this work, we demonstrate a new method of millimeter-wave imaging that uses the transmission of noise signals paired with an element-level 38 GHz digital receiving array to generate millimeter-wave imagery at 652 frames per second. Using a new parallel data acquisition and image formation approach, latencies were reduced by a factor of nearly 50 compared to the authors' prior work, yielding frame rates more than 26 times faster than any other reported millimeter-wave imaging system. Such imaging capability significantly expands the opportunities for millimeter-wave commercial and scientific imaging applications including contraband detection, consumer sensing, industrial imaging, and nondestructive evaluation. We discuss the millimeter-wave hardware architecture, the imaging algorithm, and present experimental high-speed millimeter-wave imagery.