NDLI: Application of Doppler beam sharpening for azimuth refinement in prospective low-THz automotive radars

Content Provider	IET Digital Library
Author	Daniel, Liam Stove, Andrew Hoare, Edward Phippen, Dominic Cherniakov, Mike Mulgrew, Bernie Gashinova, Marina
Abstract	In this study, the authors investigate the application of the Doppler beam sharpening (DBS) technique for angular refinement to the emerging area of low-terahertz (THz) radar sensing. Ultimately this is to improve radar image quality in the azimuth plane to complement the excellent range resolution and thus improve object classification in low-THz radar imaging systems for autonomous platforms. The study explains the fundamental theory behind the process of DBS and describes the applicability of DBS to automotive sensing, indicating the potential for synthetic beamwidths of a fraction of a degree. Low-THz DBS was experimentally tested under controlled laboratory conditions, not only to accurately localised target objects in Cartesian space but also to provide unique object imaging at low-THz frequencies with wide azimuthal beamwidth antennas. It was shown that a stationary (i.e. non-scanned) wide beam antenna mounted on a moving platform can deliver imagery at least comparable to that produced by physical beamforming, be that steering arrays or narrow beam scanning antennas as in the experimental case presented.
Starting Page	1121
Ending Page	1130
Page Count	10
ISSN	17518784
Volume Number	12
e-ISSN	17518792
Issue Number	Issue 10, Oct (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/12/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5024
Journal	IET Radar, Sonar & Navigation
Publisher	The Institution of Engineering and Technology
Publisher Date	2018-08-08
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Accurately Localised Target Objects Angular Refinement Array Signal Processing Automotive Radars Automotive Sensing Autonomous Platforms Azimuth Plane Azimuth Refinement Controlled Laboratory Condition Doppler Beam Sharpening Technique Emerging Area Excellent Range Resolution Fundamental Theory Low-THz DBS Low-THz Radar Narrow Beam Object Classification Optical, Image And Video Signal Processing Radar Antenna Radar Equipment Radar Image Quality Radar Imaging Radar Sensing Road Vehicle Radar Scanning Antenna Signal Processing And Detection Synthetic Beamwidths System And Application Unique Object Wide Azimuthal Beamwidth Antenna
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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