From microwaves to submillimeter waves: modern advances in computational imaging, radar, and future trends

Okan Yurduseven; Thomas Fromenteze; Ken Cooper; Goutam Chattopadhyay; David R. Smith

doi:10.1117/12.2515643

1 March 2019 From microwaves to submillimeter waves: modern advances in computational imaging, radar, and future trends

Okan Yurduseven, Thomas Fromenteze, Ken Cooper , Goutam Chattopadhyay , David R. Smith

Proceedings Volume 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII; 1091710 (2019) https://doi.org/10.1117/12.2515643
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

In this paper, we review modern advances in microwave and millimeter-wave computational frequency-diverse imaging, and submillimeter-wave radar systems. We first present a frequency-diverse computational imaging system developed by Duke University for security-screening applications at K-band (17.5-26.5 GHz) frequencies. Following, we show a millimeter-wave spotlight imaging concept and its conceptual integration with the K-band system as interesting example of sensor fusion. We also demonstrate the application of computational frequency-diverse imaging for polarimetric imaging and phase retrieval problems. We show that using the concept of computational frequency-diverse imaging and quasi-random measurement bases, high-fidelity images of objects can be retrieved without the need for any mechanical scanning apparatus and phase shifting circuits. Increasing the frequency-band of operation, we also demonstrate a 340 GHz radar developed by the Jet Propulsion Laboratory and its application for standoff detection. We demonstrate a new technique to characterize the point-spread-function (PSF) of radars operating at submillimeter-wave frequencies.

Citation Download Citation

Okan Yurduseven, Thomas Fromenteze, Ken Cooper , Goutam Chattopadhyay , and David R. Smith "From microwaves to submillimeter waves: modern advances in computational imaging, radar, and future trends", Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 1091710 (1 March 2019); https://doi.org/10.1117/12.2515643

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