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Radar, Sonar and Navigation, IEE Proceedings -

Issue 3 • Date Jun 2002

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Displaying Results 1 - 6 of 6
  • Subspace-based coherent source localisation with forward/backward covariance matrices

    Publication Year: 2002 , Page(s): 145 - 151
    Cited by:  Papers (6)
    Click to expandAbstract | PDF file iconPDF (465 KB)  

    Coherent signals arriving at a uniform linear array can be localised using the sum of the spatially smoothed forward covariance matrix and the backward one. A basis for the signal subspace can be estimated directly from its columns without computationally expensive eigendecomposition. However, the terms of noise power present at the sum matrix result in an inaccurate estimate of the basis, even if... View full abstract»

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  • Radar bias correction based on GPS measurements for ATC applications

    Publication Year: 2002 , Page(s): 137 - 144
    Cited by:  Papers (1)  |  Patents (1)
    Click to expandAbstract | PDF file iconPDF (506 KB)  

    A new method for radar measurement bias correction is described. It is based on the use of a mode S datalink and GPS receivers, and may provide accurate bias estimations both for primary and secondary collocated radars. The proposed method distributes effectively the calibration process over the radar network, potentially reducing communication needs and computation complexity of currently used ce... View full abstract»

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  • Re-examining the nature of radar sea clutter

    Publication Year: 2002 , Page(s): 105 - 114
    Cited by:  Papers (7)
    Click to expandAbstract | PDF file iconPDF (718 KB)  

    Conventionally, sea clutter has been modelled as a stochastic compound k-distribution. It was previously suggested that sea clutter was not stochastic but rather deterministic. More precisely, the system could be described as a nonlinear deterministic process, which exhibited chaotic behaviour. This issue is re-examined. It is demonstrated that the two main invariants used in the previous analysis... View full abstract»

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  • Interferometric radio-frequency emitter location

    Publication Year: 2002 , Page(s): 153 - 160
    Cited by:  Papers (3)  |  Patents (4)
    Click to expandAbstract | PDF file iconPDF (543 KB)  

    A generalised correlation technique is developed as the basis for radio-frequency emitter location employing two or more intercept platforms. The technique extends the applicability of the interferometric correlation approach, as exemplified by the use of the ambiguity function in satellite interferer location, to a broader range of emitter location problems. In particular, the proposed approach a... View full abstract»

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  • Numerical analysis of the response of HF radar to meteor backscatter detection

    Publication Year: 2002 , Page(s): 125 - 135
    Click to expandAbstract | PDF file iconPDF (717 KB)  

    The response of a high frequency radar system to echoes from underdense meteor trails is numerically calculated. The strengths and limitations of radar detection of meteors at different radar frequencies have been studied based on standard theory. The standard theory takes into account the initial trail radius, the finite meteor velocity, and the radial diffusion. The significance of the pulse rep... View full abstract»

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  • Texture modelling, estimation and validation using measured sea clutter data

    Publication Year: 2002 , Page(s): 115 - 124
    Cited by:  Papers (21)  |  Patents (2)
    Click to expandAbstract | PDF file iconPDF (762 KB)  

    The authors consider modelling and estimating the texture in high resolution nonGaussian sea clutter. Cyclostationarity of sea clutter is investigated and validated by processing measured high-resolution data. The clutter is modelled as a compound Gaussian process and the texture as the superposition of real cosines with unknown frequencies, amplitudes and phases. A method is proposed for estimati... 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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