NDLI: Ambigutiy function of SAR based on OFDM waveform

Content Provider	IEEE Xplore Digital Library
Author	Fan Chongyi Huang Xiaotao Jin Tian Chang Wenge
Copyright Year	2010
Description	Author affiliation: School of Electronic Science and Engineering, National University of Defense Technology, Changsha, China (Fan Chongyi; Huang Xiaotao; Jin Tian; Chang Wenge)
Abstract	Recently many researchers have turned their interests to Orthogonal Frequency Division Multiplexing (OFDM) signal since its promising features in radar. This paper concerns a novel Synthetic Aperture Radar (SAR) system which employs this OFDM signal. Though the OFDM will bring lots of advantages, the performance may be changed since the signal of SAR is different from conventional ones. To evaluate the change, this paper will give a theoretical analysis and the corresponding simulation results from the viewpoint of ambiguity function. This ambiguity function is equivalent to the role of Point Spread Function (PSF) which is often used in SAR for evaluating resolutions. Comparing to the conventional SAR with LFM signal, it is proved that the resolution of SAR based on OFDM is equivalent to the conventional one or even better. This ambiguity function also provides a principle for selecting various OFDM signals as the transmit signal of SAR.
Starting Page	397
Ending Page	401
File Size	999969
Page Count	5
File Format	PDF
ISBN	9781424458110
ISSN	10975659
e-ISBN	9781424458127
DOI	10.1109/RADAR.2010.5494590
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Synthetic aperture radar Signal resolution Signal processing Radar imaging Radar polarimetry Pulse shaping methods Doppler shift Radar signal processing Geometry
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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