NDLI: Multi-objective optimized OFDM radar waveform for target detection in multipath scenarios

Content Provider	IEEE Xplore Digital Library
Author	Sen, S. Gongguo Tang Nehorai, A.
Copyright Year	2010
Description	Author affiliation: Department of Electrical and Systems Engineering, Washington University in St. Louis, One Brookings Drive, MO 63130, USA (Sen, S.; Gongguo Tang; Nehorai, A.)
Abstract	We propose a multi-objective optimization (MOO) technique to design an orthogonal frequency division multiplexing (OFDM) radar signal for detecting a moving target in the presence of multipath reflections. We employ an OFDM signal to increase the frequency diversity of the system. Moreover, the multipath propagation increase the spatial diversity by providing extra “looks” at the target. First, we develop a parametric measurement model by reformulating the target detection problem as a sparse estimation method. At a particular range cell, we exploit the sparsity of multiple paths and the knowledge of the environment to estimate along which path the target responses are received. Then, we formulate a constrained MOO algorithm, to optimally design the spectral parameters of the OFDM waveform, by simultaneously optimizing two objective functions: minimizing the upper bound on the estimation error to improve the efficiency of sparse-recovery and maximizing the squared Mahalanobis-distance to increase the performance of the underlying detection problem. We present numerical examples to demonstrate the performance improvement due to adaptive waveform design.
Starting Page	618
Ending Page	622
File Size	377644
Page Count	5
File Format	PDF
ISBN	9781424497225
ISSN	10586393
e-ISBN	9781424497218
DOI	10.1109/ACSSC.2010.5757635
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Upper bound Optimization Object detection Noise Radar detection
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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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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