NDLI: Statistical Analysis of the Effects of Virtual Element Position Errors on Airborne Down-Looking LASAR 3-D Imaging

Content Provider	IEEE Xplore Digital Library
Author	Han Kuoye Bao Qian Tan Weixian Wang Yanping Hong Wen
Copyright Year	2004
Abstract	In order to achieve 3-D imaging with an airborne down-looking linear-array synthetic aperture radar (LASAR), a uniform virtual antenna array may be obtained by aperture synthesis of the cross-track sparse multiple-input-multiple-output array. However, the actual 3-D imaging quality is unavoidably degraded by errors in the virtual element position. In this letter, we investigate the effects of these errors on the forms and the degrees of image quality degradation by decomposing the error-related stochastic processes via an orthogonal transform based on discrete Legendre polynomials. It should be noted that these analyses are helpful for designing a LASAR system and providing a reference for specifying the requisite precision of measurement devices and calibration methods. Finally, we briefly consider the use of calibration methods to eliminate the effects of errors.
Sponsorship	IEEE Geoscience and Remote Sensing Society
Starting Page	1888
Ending Page	1892
Page Count	5
File Size	1116361
File Format	PDF
ISSN	1545598X
Volume Number	12
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Imaging Arrays Synthetic aperture radar Calibration Radar imaging Array signal processing Degradation virtual element Linear-array synthetic aperture radar (LASAR) phase error 3-D imaging
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Geotechnical Engineering and Engineering Geology

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