IEE Proceedings F - Radar and Signal Processing

Issue 3 • Jun 1990

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Displaying Results 1 - 9 of 9
  • Semi-infinite quadratic optimisation method for the design of robust adaptive array processors

    Publication Year: 1990, Page(s):177 - 182
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    A new method for the design of adaptive array processors based on semi-infinite quadratic optimisation techniques is presented. The method is to minimise array output power subject to linear functional inequality constraints. Various errors and mismatches between ideal cases and actual scenario are incorporated into the constraints, which set the allowable upper and lower bounds on the array respo... View full abstract»

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  • Constraints for linear predictive and minimum-norm methods in bearing estimation

    Publication Year: 1990, Page(s):187 - 191
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (236 KB)

    It is desirable to reduce the computational complexity and improve the resolution of an estimator whenever possible. It is shown in the paper that, for a spatial spectrum estimator using either the linear predictive method or the minimum-norm method, the number of constraints can be reduced by one when the optimum weight vector is obtained using real vector notation. The reduction in the number of... View full abstract»

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  • Comparison of the fixing accuracy of single-station locators and triangulation systems assuming ideal shortwave propagation in the ionosphere

    Publication Year: 1990, Page(s):173 - 176
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (248 KB)

    Single-station locator fixing errors are calculated from a formula derived in the paper and compared with analogous errors arising in horizontal triangulation systems. It is assumed that single-hop wave propagation takes place and that the errors in the azimuth, elevation and virtual height of reflection are unbiased, normally distributed, mutually independent and small. The RMS error, which can b... View full abstract»

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  • Prime number DFT computation via parallel circular convolvers

    Publication Year: 1990, Page(s):205 - 212
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB)

    A great deal of work has been carried out in recent years into the construction of computationally efficient small discrete Fourier transform (DFT) algorithms. Most small-DFT algorithms exploit the equivalence of prime number DFT computation with that of circular convolution, as well as Winograd's complexity theory results relating to the optimal computation of small circular convolutions, to achi... View full abstract»

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  • Tracking manoeuvring targets with a low probability of detection in clutter

    Publication Year: 1990, Page(s):183 - 186
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (320 KB)

    A new technique for tracking manoeuvering targets with a low probability of detection in a cluttered environment is presented. It generalises the (N,M) scan bifurcating filter of Kenefic (1981) so that the life of track branches which do not associate with plots is extended, resulting in improved tracking of targets with a low probability of detection. It is shown how a probabili... View full abstract»

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  • Performance of the excision CFAR detector in the presence of interferers

    Publication Year: 1990, Page(s):163 - 171
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (572 KB)

    The presence of interferers in the sample set used by various types of cell-averaging CFAR detectors for estimation of the noise power can cause a drastic degradation in performance. The paper analyses the effect of interferers on the performance of the excision CFAR detector. In this detector, strong samples that exceed an excision threshold are excised from the sample set prior to the cell-avera... View full abstract»

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  • Improving the accuracy of parameter estimation for real exponentially damped sinusoids in noise

    Publication Year: 1990, Page(s):192 - 196
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    The mean filter of the forward predictor (FP) and backward predictor (BP) is proposed as an algorithm giving improved accuracy of parameter estimation for real exponentially damped sinusoids in noise. In this algorithm, the mean values of the FP estimate and the BP estimate for frequencies and damping factors of multiple real exponentially damped sinusoids are calculated instead of the BP estimate... View full abstract»

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  • Order statistics CFAR for Weibull background

    Publication Year: 1990, Page(s):157 - 162
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (396 KB)

    Shows how to adopt Rohling's order statistics CFAR algorithm, (1983) developed for a Rayleigh background to the case of a Weibull background with a known shape parameter. When the shape parameter is unknown, Weber and Haykin (1985) have proposed a two-parameter algorithm in which the threshold is obtained from two ranked background samples. The CFAR loss of the Weber-Haykin CFAR algorithm is analy... View full abstract»

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  • Reconstruction of 2-D bandlimited discrete signals from nonuniform samples

    Publication Year: 1990, Page(s):197 - 204
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (428 KB)

    A reconstruction method is developed for nonuniformly sampled bandlimited 1-D and 2-D discrete signals. In several applications one needs to interpolate over regularly spaced points, given irregularly sampled values of the signal. By exploiting the aliasing relationship in the DFT (sampled frequency) domain rather than in the continuous Fourier transform domain one can exactly reconstruct the disc... View full abstract»

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Aims & Scope

The latest version of this title is Radar, Sonar & Navigation, IET.

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