NDLI: Image while scan (IWS): An adaptive Gabor spectrum estimation approach

Content Provider	IEEE Xplore Digital Library
Author	Raj, R.G. Lipps, R.
Copyright Year	2009
Description	Author affiliation: U.S. Naval Research Laboratory, Radar Division, Washington DC, 20375, USA (Raj, R.G.; Lipps, R.)
Abstract	We extend the classical ISAR imaging methodology by introducing a rotating transmit-receive antenna structure that allows us to simultaneously perform target imaging and surface surveillance operations. The inherent problem of processing only a limited number of pulses (per range-bin) is overcome by characterizing the received Doppler signals via a Kalmanized sparse Gabor representation that allows us to accurately capture the spectral information contained in the radar signals at different levels of resolution while also affording us the ability to adapt the representation based on the radar signals received in successive frames. We demonstrate the performance of our spectrum estimation methodology by testing it on real radar data, and comparing it with linear prediction (Burg's method) and sinusoidal Bayesian spectrum estimation algorithms. We find that our approach offers important advantages over previous approaches to Doppler spectrum estimation, while also potentially enabling the incorporation of wavelet thresholding strategies in order to suppress noise present in radar signals due to environmental and systemic factors.
Starting Page	1
Ending Page	6
File Size	593360
Page Count	6
File Format	PDF
ISBN	9781424428700
ISSN	10975659
DOI	10.1109/RADAR.2009.4977018
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectral analysis Doppler radar Signal processing Radar signal processing Transmitting antennas Surveillance Radar imaging Signal resolution Testing Bayesian methods
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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