NDLI: Adaptive mainbeam jamming suppression for multi-function radars

Content Provider	IEEE Xplore Digital Library
Author	Nohara, T.J. Weber, P. Premji, A.
Copyright Year	1998
Description	Author affiliation: Sitcom Syst. Ltd., Fonthill, Ont., Canada (Nohara, T.J.)
Abstract	One aspect of naval defence involves surveillance of the airspace in the vicinity of one's vessel. Both high-altitude and low-altitude missiles must be detected, tracked and targeted. A multi-function radar (MFR) that uses an electrically steerable pencil beam (phased array) to search the volume around the ship can provide the required capability. Monopulse sum and difference beams (azimuth and elevation) are provided to yield high resolution direction of arrival (DOA) estimates for detected targets, improving ship defence capabilities against modern threats. This paper is concerned with robust estimation of low-altitude targets such as sea skimming missiles for the challenging case where horizon-based jammers are present in the antenna's mainbeam. By exploiting the properties of the monopulse beams, spatially adaptive algorithms are developed that provide simultaneous mainbeam nulling and high-resolution target DOA estimation. Simulation results demonstrate the detection and estimation performance achievable. DOA estimates using suitably derived MUSIC (multiple signal classification), ML (maximum likelihood) and corrected adaptive monopulse (CAM) algorithms are compared.
Starting Page	207
Ending Page	212
File Size	433638
Page Count	6
File Format	PDF
ISBN	0780344928
DOI	10.1109/NRC.1998.678002
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-05-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Jamming Direction of arrival estimation Missiles Radar detection Phased arrays Marine vehicles Multiple signal classification Maximum likelihood estimation Surveillance Radar tracking
Content Type	Text
Resource Type	Article

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