Experimental demonstration and calibration of a 16-element active incoherent millimeter-wave imaging array

S Vakalis, L Gong, Y He… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
In this article, an active incoherent millimeter-wave imaging array is presented, along with its
calibration procedure. Active incoherent millimeter-wave imaging uses the transmission of …

Millimeter-wave imaging at 652 frames per second

S Vakalis, D Chen, JA Nanzer - IEEE Journal of Microwaves, 2021 - ieeexplore.ieee.org
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 …

Non-destructive imaging of defects using non-cooperative 5g millimeter-wave signals

S Vakalis, JR Colon-Berrios, D Chen, JA Nanzer - Sensors, 2023 - mdpi.com
Recent developments in fifth-generation (5G) wireless communications networks are
creating an increasingly crowded electromagnetic environment at microwave (3–30 GHz) …

Fourier domain millimeter-wave imaging using noncooperative 5G communications signals

S Vakalis, S Mghabghab… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The spectrum of millimeter-wave frequencies is becoming increasingly crowded due to the
advances in fifth-generation (5G) communications and automotive radar, leading to greater …

Photonics-based simultaneous angle of arrival and frequency measurement system with multiple-target detection capability

Y Yang, C Ma, B Fan, X Wang, F Zhang… - Journal of Lightwave …, 2021 - opg.optica.org
A photonics-based system for simultaneous angle of arrival (AOA) and frequency
measurement is proposed and demonstrated. In the proposed system, an acousto-optic …

Toward space–time incoherent transmitter design for millimeter-wave imaging

S Vakalis, D Chen, JA Nanzer - IEEE Antennas and Wireless …, 2020 - ieeexplore.ieee.org
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 …

Three-dimensional active incoherent millimeter-wave imaging

S Vakalis, JR Colon-Berrios, D Chen… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A new 3-D active incoherent millimeter-wave (3-D AIM) imaging method is introduced in this
article. By utilizing a sparse interferometric receive array and pulse modulation in the …

Microwave Imaging with Circular Arrays: Comparative Analysis between OAM and MIMO

A Veneri, P Burghignoli… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
The rotating phase of orbital angular momentum (OAM) waves can bring new degrees of
freedom in the wireless communication and microwave imaging realms, and more generally …

Incoherent point spread function estimation and multipoint deconvolution for active incoherent millimeter-wave imaging

JR Colon-Berrios, S Vakalis, D Chen… - IEEE Microwave and …, 2022 - ieeexplore.ieee.org
We present an approach to image deconvolution in active incoherent millimeter-wave (AIM)
imaging. While traditional incoherent imaging systems capture thermal radiation from the …

Towards three-dimensional active incoherent millimeter-wave imaging

S Vakalis, JA Nanzer - 2021 IEEE International Conference on …, 2021 - ieeexplore.ieee.org
Active incoherent millimeter-wave (AIM) imaging is a new technique that combines aspects
of passive millimeter-wave imaging and noise radar to obtain high-speed imagery. Using an …