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IEE Proceedings - Radar, Sonar and Navigation

Issue 2 • Date Apr 2001

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Displaying Results 1 - 7 of 7
  • Group delay effects on the performance of wideband CW-LFM radars

    Publication Year: 2001, Page(s):95 - 100
    Cited by:  Papers (9)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (464 KB)

    The effect of group delay variations over the operation bandwidth of CW-LFM radars is investigated. Although present systems have no special problems with phase distortion, it is shown that for the next generation of low probability of interception radars this is a very important handicap. Main parameters relevant for the performance of the system are identified and some design techniques are prop... View full abstract»

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  • Radio disturbance suppression for HF radar

    Publication Year: 2001, Page(s):89 - 93
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    A new method of single sample polarisation filtering is proposed. The algorithm is fast and suitable for the polarisation processing of stationary or nonstationary polarised disturbed signals with one or more independent sources of disturbance. A ground wave polarimetric radar with the ability of radio disturbance suppression is then introduced. Some numerical results demonstrate the effectiveness... View full abstract»

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  • Characterisation of wind field with high resolution in time and space by the use of electromagnetic and acoustic waves

    Publication Year: 2001, Page(s):49 - 55
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (520 KB)

    The authors present a bistatic radioacoustic system where a Bragg grid produced by a spherical pressure wave enhances the forward scattering capability by some 40 dB when matched to the EM phase front. The system is used to measure 3-D wind, turbulence and vortex parameters as wind phenomena alter the scattering characteristics of the acoustic Bragg grid. The criterion for Bragg scattering is only... View full abstract»

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  • Experimental analysis of sea clutter in shipborne HFSWR

    Publication Year: 2001, Page(s):67 - 71
    Cited by:  Papers (13)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    The spreading of the dominant first order Bragg lines in shipborne HFSWR (high-frequency surface wave radar) severely obscures targets with Doppler frequencies within the spreading domain. STAP (space-time adaptive processing) is one of the effective methods for solving the problem. The experimental one-dimensional spreading spectrum and two dimensional space-time spectrum of sea clutter in shipbo... View full abstract»

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  • Optimal adaptive processing for domain factorised element-digitised array radar

    Publication Year: 2001, Page(s):81 - 88
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1188 KB)

    For large phased array radar, digitisation and adaptive beamforming are usually performed at the subarray level. The number of subarrays is usually much smaller than the number of array elements thus reducing the number of available adaptive degrees of freedom (DOF). For an element digitised array radar (EDAR), a subarray technique can also be employed to reduce the number of adaptive channels in ... View full abstract»

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  • Sea-wave fractal spectrum for SAR remote sensing

    Publication Year: 2001, Page(s):56 - 66
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (996 KB)

    A new model of the sea-wave directional spectrum based on fractals is proposed. An innovative aspect of the work is the theoretical approach used to get the `fractal sea spectrum'. The common spectrum models are described by empirical expressions derived from fitting experimental data. Starting from a definition of a fractal model of the sea surface, the spatial autocorrelation function is calcula... View full abstract»

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  • Doppler modelling of radar sea clutter

    Publication Year: 2001, Page(s):73 - 80
    Cited by:  Papers (31)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (808 KB)

    Data from a cliff top radar experiment conducted off the south coast of England are examined in order to investigate the applicability of a three-component model for radar Doppler spectra, developed using laboratory wavetank data, to coastal water sea clutter. This is achieved by a detailed analysis of the prominent features in the cliff top radar data in terms of polarisation and Doppler characte... 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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