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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1384

Title: Adaptive beamforming system for radio-frequency interference rejection
Authors: Goris, M.
Joseph, A.
Hampson, G.
Smits, F.
Issue Date: 1999
Publisher: IEEE
Citation: IEEE Proceedings on Radar and Sonar Navigation, 1999, Vol.146, p73-77
Abstract: Results from an experimental antenna array that is processed adaptively to cancel external radio-frequency interference are presented. The eight-element array has been tested in a far-field anechoic chamber. The adaptive beamformer rejects sidelobe and main-lobe interference by up to 37 dB. A conventional Fourier beamformer rejects interference only in the sidelobes by between 13 and 30 dB depending on the location of the interference within the array's sidelobes. The adaptive beamformer does not need any a priori knowledge about the interfering signals such as the number of interferers or their direction of arrival. The adaptive beamformer also has superior angular resolution to the Fourier beamformer. With an aperture of 4.4 wavelengths and an input signal-to-noise ratio of 37 dB, the adaptive beamformer's resolution is as low as 0.28° while the Fourier beamformer's resolution is 8.8
URI: http://hdl.handle.net/2289/1384
Copyright: ©1999 IEEE. 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 Raman Research Institute's'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.
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