Design and Implementation of Near-Field, Wideband Synthetic Aperture Beamformers
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A coarray-based near-field, wideband synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented. While coarray techniques offer significant reduction in the number of array elements for a given angular resolution, the hybrid subarray-stepped frequency realization of wideband systems simplifies implementations and offers flexibility in beamforming. Proof of concept is provided using real data collected in an anechoic chamber for several pulse shapes and array weightings.
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2004-01-01
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Copyright 2004 IEEE. Reprinted from IEEE Transactions on Aerospace and Electronic Systems, Volume 40, Issue 1, January 2004, pages 206-220. Publisher URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isNumber=28783&page=1 This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.