Toward Space–Time Incoherent Transmitter Design for Millimeter-Wave Imaging
Toward Space–Time Incoherent Transmitter Design for Millimeter-Wave Imaging
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DOI：
10.1109/lawp.2020.3005174
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发表时间：
2020-06
影响因子：
4.2
通讯作者：
Stavros Vakalis;Daniel Chen;J. Nanzer
中科院分区：
文献类型：
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作者：
Stavros Vakalis;Daniel Chen;J. Nanzer
最近已经证明，使用多个噪声发射器来照明具有非相干时空变场的场景和稀疏接收干涉阵列，可以获得微波和毫米波图像。与相干成像相比，非相干成像有许多优点，包括发射机和接收机之间不需要同步，以及不需要求解逆问题的快速处理。在这封信中，我们提出了一种在非相干毫米波成像器中表征发射信号的空间非相干性的方法。我们从理论上和实验上证明了37 GHz成像系统中传输辐射的空间相干性随噪声发射器数目的变化规律。
It has been recently demonstrated that microwave and millimeter-wave imagery can be obtained using multiple noise transmitters to illuminate the scene with incoherent space–time-varying fields and a sparse receiving interferometric array. Incoherent imaging has a number of benefits compared to coherent imaging, including no required synchronization between the transmitters and receivers, and fast processing that does not require solving an inverse problem. In this letter, we present a method for characterizing the spatial incoherence of the transmitted signals in an incoherent millimeter-wave imager. We demonstrate theoretically, and experimentally, the characterization of the transmitted radiation spatial coherence as a function of number of noise transmitters in a 37 GHz imaging system.