Spherical Wavefront Near-Field DoA Estimation in THz Automotive Radar

Automotive radar; beam-squint; DoA estimation; THz band; vehicular communications; Beam squints; Direction of arrival estimation; Field directions; Large arrays; Near fields; Spherical wavefronts; Tera Hertz; Terahertz band; Vehicular communications; Computer Networks and Communications; Modeling and Simulation; Instrumentation; Radiation

Abstract :

[en] Automotive radar at terahertz (THz) band has the potential to provide compact design. The availability of wide bandwidth at THz-band leads to high range resolution. Further, very narrow beamwidth arising from large arrays yields high angular resolution up to milli-degree level direction-of-arrival (DoA) estimation. At THz frequencies and extremely large arrays, the signal wavefront is spherical in the near-field that renders traditional far-field DoA estimation techniques unusable. In this work, we examine near-field DoA estimation for THz automotive radar. We propose an algorithm using multiple signal classification (MUSIC) to estimate target DoAs and ranges while also taking beam-squint in near-field into account. Using an array transformation approach, we compensate for near-field beam-squint in noise subspace computations to construct the beam-squint-free MUSIC spectra. Numerical experiments show the effectiveness of the proposed method to accurately estimate the target parameters.

Disciplines :

Computer science

Author, co-author :

Elbir, Ahmet M.; University of Luxembourg, Luxembourg

MISHRA, Kumar Vijay ; University of Luxembourg ; United States DEVCOM Army Research Laboratory, Adelphi, United States

CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

External co-authors :

yes

Language :

English

Title :

Spherical Wavefront Near-Field DoA Estimation in THz Automotive Radar

Publication date :

17 March 2024

Event name :

2024 18th European Conference on Antennas and Propagation (EuCAP)

Event organizer :

EuCAP

Event place :

Glasgow, Gbr

Event date :

17-03-2024 => 22-03-2024

By request :

Yes

Audience :

International

Main work title :

18th European Conference on Antennas and Propagation, EuCAP 2024

Publisher :

Institute of Electrical and Electronics Engineers Inc.

ISBN/EAN :

9788831299091

Peer reviewed :

Peer reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx7/10500901/10500902/10501258.pdf?arnumber=10501258

Funders :

Ansys
CADFEM
Dassault Systemes
et al.
Huawei
Microwave Vision Group (MVG)

Data Set :

https://ieeexplore.ieee.org/document/10501258/keywords#keywords

Available on ORBilu :

since 18 December 2024

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