Work

Photonic Stepped-Frequency Intensity Modulated Comb Terahertz Radar

Year: 2025

Type: article

Abstract: This work presents an ultra-high repetition rate (UHRR) terahertz time-domain spectroscopy (THz-TDS) system with a unique capability – it functions as a close-range pulsed radar with micrometer precision and an unambiguous range (UR) of about 3 mm. To extend the UR, a stepped-frequency intensity modulated comb (s-FIMC) is introduced. This results in a hybrid radar system, where s-FIMC is employed to determine the distance to a target, while the THz-TDS signal is utilized to monitor changes in the target's position with micrometer precision. With a 10 GHz modulation bandwidth, a resolution of 15 mm, and a range accuracy of$\pm$1.47 mm are achieved in s-FIMC mode. In the TDS mode, a range accuracy of$\pm$15$\rm {\mu }$m is demonstrated.

Source: IEEE Journal of Microwaves

DOI: 10.1109/jmw.2025.3544017

Authors: Vladyslav Cherniak, Kevin Kolpatzeck, Jan C. Balzer

Institution: University of Duisburg-Essen

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

Funder: Deutsche Forschungsgemeinschaft