NDLI: Study of terahertz LFMCW imaging radar with Hilbert transform receiver

Content Provider	IET Digital Library
Author	Lu, Zheng Li, Chao Gao, Xiang Fang, Guangyou
Abstract	A linear frequency-modulated continuous-wave (LFMCW) radar with a simplified single homodyne channel is proposed and developed in the 0.22 THz band. The transmitter employs direct digital waveform synthesiser technology to obtain a reliable fast scanning LFMCW source, the scanning speed of which is 40 µs with an instantaneous bandwidth of 14.4 GHz. To realise the nonlinearity calibration and coherent imaging, the quadrature signal is recovered by a Hilbert transform receiver to obtain the phase information of the return wave. The radar operates using the real-aperture imaging method and uses a lens to focus the Gauss beam which determines the azimuth resolution. The results of the pulse compression and imaging experiments verify the effectiveness of the proposed imaging scheme in the 0.22 THz band. The radar can be used for non-destructive testing and security checks.
Starting Page	549
Ending Page	550
Page Count	2
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 7, Mar (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.0085
Journal	Electronics Letters
Publisher Date	2014-03-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Azimuth Resolution Bandwidth 14.4 GHz Coherent Imaging CW Radar Direct Digital Waveform Synthesiser Technology FM Radar Frequency 0.22 THz Gauss Beam Hilbert Transform Hilbert Transform Receiver Integral Transforms Lens Lenses Linear Frequency-modulated Continuous Wave Radar Nondestructive Testing Nonlinearity Calibration Phase Information Pulse Compression Quadrature Signal Radar Equipment Radar Imaging Radio Receiver Radio Transmitters Real-aperture Imaging Method Reliable Fast Scanning LFMCW Source Return Wave Security Check Single Homodyne Channel System And Application Terahertz LFMCW Imaging Radar Time 40 Mus Transmitter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Transmitter noise considerations in super-Nyquist FMCW radar design

Radio-frequency interference to automotive radar sensors

Design and implementation of LFMCW radar system based on ZYNQ

Bistatic Terahertz Radar Azimuth-Elevation Imaging Based on Compressed Sensing

High-precision estimation of target range, radial velocity, and azimuth in mechanical scanning LFMCW radar

Motion compensation of the transmitter and receiver in bistatic frequency-modulated continuous-wave synthetic aperture radar

A Fully Integrated 240-GHz Direct-Conversion Quadrature Transmitter and Receiver Chipset in SiGe Technology

Linear-FM random radar waveform compressed by dechirping method

300 GHz Integrated Heterodyne Receiver and Transmitter With On-Chip Fundamental Local Oscillator and Mixers

Study of terahertz LFMCW imaging radar with Hilbert transform receiver

Similar Documents

Transmitter noise considerations in super-Nyquist FMCW radar design

Radio-frequency interference to automotive radar sensors

Design and implementation of LFMCW radar system based on ZYNQ

Bistatic Terahertz Radar Azimuth-Elevation Imaging Based on Compressed Sensing

High-precision estimation of target range, radial velocity, and azimuth in mechanical scanning LFMCW radar

Motion compensation of the transmitter and receiver in bistatic frequency-modulated continuous-wave synthetic aperture radar

A Fully Integrated 240-GHz Direct-Conversion Quadrature Transmitter and Receiver Chipset in SiGe Technology

Linear-FM random radar waveform compressed by dechirping method

300 GHz Integrated Heterodyne Receiver and Transmitter With On-Chip Fundamental Local Oscillator and Mixers

Study of terahertz LFMCW imaging radar with Hilbert transform receiver