NDLI: 2D apodization in UWB SAR using linear filtering

Content Provider	IEEE Xplore Digital Library
Author	Sjogren, T.K. Vu, V.T. Pettersson, M.I.
Copyright Year	2011
Description	Author affiliation: Department of Electrical Engineering, Blekinge Institute of Technology (BTH), Sweden (Sjogren, T.K.; Vu, V.T.; Pettersson, M.I.)
Abstract	In this paper, an investigation is made on how sidelobes can be suppressed in ultrawideband-ultrawidebeam (UWB) Synthetic Aperture Radar (SAR) using apodization. Due to the special properties of UWB SAR such as very wide integration angle and very large relative bandwidth, the support for the spectrum of a SAR image differs distinctively from a rectangle, which is the normal approximation in narrowband-narrowbeam (NB) SAR. The proposal in the paper is to apply non-separable windows to the spectrum, in order to suppress sidelobes. Non-separable windows are shown to give less broadening of mainlobe while maintaining the same suppression of sidelobes in comparison to separable windows. In the comparison, parameters for three different SAR systems are used.
Starting Page	1689
Ending Page	1692
File Size	320833
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049559
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandwidth Image resolution Synthetic aperture radar Azimuth Computational efficiency Shape Radar polarimetry UWB SAR Synthetic Aperture Radar Apodization Windowing Signal Processing
Content Type	Text
Resource Type	Article

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