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IEE Proceedings - Radar, Sonar and Navigation

Issue 3 • Date Jun 1998

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Displaying Results 1 - 6 of 6
  • Performance analysis of the OS family of CFAR schemes with incoherent integration of M-pulses in the presence of interferers

    Publication Year: 1998, Page(s):181 - 190
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (872 KB)

    The author analyses the performance of the ordered statistics (OS) CFAR schemes for M-correlated sweeps when these processors operate in multiple-target environments. These schemes include the conventional OS scheme as well as its modified versions. Members of the OS family use local estimators based on ordered statistics and generate both a near and far range noise-level estimate. Local estimates... View full abstract»

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  • Signal identification by orthogonal transforms

    Publication Year: 1998, Page(s):145 - 152
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (692 KB)

    The phase of a signal contains most of the essential characteristics for its identification. A technique is proposed to process the phase for noise reduction and signal identification. The identifier models the phase as a linear combination of orthogonal vectors, computes the transform coefficients, discards the insignificant coefficients to reduce noise, and keeps significant coefficients as feat... View full abstract»

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  • Over-the-horizon radar array calibration using echoes from ionised meteor trails

    Publication Year: 1998, Page(s):173 - 180
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (852 KB)

    The Weiss-Friedlander MUSIC-type approach for estimating sensor positions and mutual coupling are combined and extended for over-the-horizon radar applications. The proposed method exploits backscattered echoes from ionised meteor trails, which can be considered as disjoint sources of opportunity from an array calibration perspective. This uses a more accurate model for the matrix, with more unkno... View full abstract»

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  • Doppler sub-optimum estimates of two-tone polarimetric radar signals

    Publication Year: 1998, Page(s):153 - 160
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (720 KB)

    The paper analyses the performance of Doppler frequency estimates of a polarimetric radar echo embedded in Gaussian additive noise, in the presence of an equal strength interfering echo, with pre-set Doppler shift and polarisation state. Some heuristic, sub-optimum estimate procedures of such a parameter, with respect to the maximum likelihood estimate are presented. The respective performances, b... View full abstract»

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  • Branch cut integration method for computing signal propagation through dispersive media

    Publication Year: 1998, Page(s):142 - 144
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (196 KB)

    A fast method for computing signals propagating through a waveguide or plasma is presented. This method converts the Bromwich contour into isolated contours encircling the poles and the branch cuts. The contribution of the branch cuts is proved to be equivalent to a low-pass filter, which has some good properties, and the signal passing through it can be calculated by using IFFT of small number of... View full abstract»

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  • Feature extraction of SAR targets consisting of trihedral and dihedral corner reflectors

    Publication Year: 1998, Page(s):161 - 172
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1396 KB)

    The authors study feature extraction of targets, consisting of both trihedral and dihedral corner reflectors, via synthetic aperture radar (SAR). A mixed data model is introduced to describe the target features. The Cramer-Rao bounds (CRBs) for the parameter estimates of the data model are also derived. Two algorithms, the FFTB (fast Fourier transform based) algorithm and the NLS (nonlinear least ... 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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