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IEE Proceedings - Radar, Sonar and Navigation

Issue 5 • Date Oct 1994

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Displaying Results 1 - 6 of 6
  • Robust coherent signal-subspace processing for directions-of-arrival estimation of wideband sources

    Publication Year: 1994, Page(s):256 - 262
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (468 KB)

    The authors propose a class of robust focusing matrices for the coherent signal-subspace method, a novel approach for the estimation of directions-of-arrival of wideband sources. The new class of focusing matrices has robustness against size variations of focusing sectors obtained by preliminary group angle estimates. To quantify information loss due to source focusing, a new measure, termed `rela... View full abstract»

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  • Maximum likelihood beamforming in the presence of multipath and refraction effects

    Publication Year: 1994, Page(s):263 - 269
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (476 KB)

    The authors present a method of performing accurate tracking of low-altitude flying targets in the presence of multipath and refraction effects. The method applies maximum likelihood (ML) beamforming to an array radar having frequency agility in combination with a computational method for predicting interference patterns which are affected by atmospheric refraction. Tracking errors obtained when u... View full abstract»

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  • Finite sample and modelling error effects on ESPRIT and MUSIC direction estimators

    Publication Year: 1994, Page(s):249 - 255
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB)

    The large-sample mean square error (MSE) of MUSIC and ESPRIT direction-of-arrival (DOA) estimators under fairly general conditions is analysed. First, an expression for the MSE of ESPRIT is derived, in a manner similar to a previous analysis of MUSIC. The essential assumption made to evaluate the variance of the estimates is that the snapshots are i.i.d. complex Gaussian vectors. This assumption i... View full abstract»

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  • Effect of antenna aircraft interaction on phased-array radar performance

    Publication Year: 1994, Page(s):279 - 284
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    Large ultralow sidelobe airborne array antennas are required for detection of low radar cross section targets against a background of complex clutter and jammer interference. One of the critical factors which limits the clutter and jammer suppression performance of adaptive phased-array radars is the impact of the aircraft in the near-field of a high gain antenna. The authors describe a simulation... View full abstract»

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  • GSC realisations using the two-dimensional transform-domain LMS algorithm

    Publication Year: 1994, Page(s):270 - 278
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (584 KB)

    The authors propose two new realisations of the broadband generalised sidelobe canceller (GSC) which are based on a two-dimensional (2D) extension of the transform-domain LMS algorithm. In the first realisation, the tap-input matrix of the GSC (following the blocking network) is mapped into the transform-domain via a 2D unitary image transform. Following this step, the transformed data are weighte... View full abstract»

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  • Growler detection in sea clutter using Gaussian spectrum models

    Publication Year: 1994, Page(s):285 - 292
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB)

    Ship navigation through growler-infested waters is a problem of deep concern to the Canadian oil exploration industry. Growlers are small pieces of glacial ice weighing up to 100 tonnes. Conventional noncoherent marine radars do not perform well in detecting these small but dangerous objects. A coherent detector based on a Gaussian spectral width (GSW) parameterisation of received radar echoes fro... View full abstract»

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Aims & Scope

IEE Proceedings Radar, Sonar and Navigation covers the theory and practice of systems involving the processing of signals for radar, radio location, radio navigation and surveillance purposes.

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