Emerging Approaches for THz Array Imaging: A Tutorial Review and Software Tool
Josiah W. Smith, Murat Torlak

TL;DR
This paper reviews emerging THz array imaging techniques, focusing on synthetic aperture radar systems, algorithms, and the integration of machine learning for high-resolution imaging and security applications.
Contribution
It provides a comprehensive tutorial on classical and data-driven THz SAR algorithms, highlighting recent advances and future research directions in the field.
Findings
Overview of classical and data-driven THz SAR algorithms
Discussion on object detection and super-resolution techniques
Identification of challenges and future research directions
Abstract
Accelerated by the increasing attention drawn by 5G, 6G, and Internet of Things applications, communication and sensing technologies have rapidly evolved from millimeter-wave (mmWave) to terahertz (THz) in recent years. Enabled by significant advancements in electromagnetic (EM) hardware, mmWave and THz frequency regimes spanning 30 GHz to 300 GHz and 300 GHz to 3000 GHz, respectively, can be employed for a host of applications. The main feature of THz systems is high-bandwidth transmission, enabling ultra-high-resolution imaging and high-throughput communications; however, challenges in both the hardware and algorithmic arenas remain for the ubiquitous adoption of THz technology. Spectra comprising mmWave and THz frequencies are well-suited for synthetic aperture radar (SAR) imaging at sub-millimeter resolutions for a wide spectrum of tasks like material characterization and…
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Taxonomy
TopicsTerahertz technology and applications · Superconducting and THz Device Technology
