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IEE Proceedings - Radar, Sonar and Navigation

Issue 2 • Date Apr 1996

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Displaying Results 1 - 8 of 8
  • Optimum CFAR detection against compound Gaussian clutter with partially correlated texture

    Publication Year: 1996, Page(s):95 - 104
    Cited by:  Papers (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1092 KB)

    The paper deals with CFAR detection in compound Gaussian clutter with a partially correlated texture component. A theoretical high performance upgrade has been demonstrated using the ideal exact knowledge of this component in the CFAR scheme (`ideal CFAR') in a paper by Watts (1985) for K-distribution. For practical application the authors derive some optimum local texture estimators, based on the... View full abstract»

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  • Monopulse detection analysis of the trimmed mean CFAR processor in nonhomogeneous situations

    Publication Year: 1996, Page(s):87 - 94
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (676 KB)

    The false alarm regulation capabilities and the detection performance of a CFAR processor depend on the robustness of the noise level estimation. The well known cell-averaging (CA) CFAR detector exhibits severe performance degradation in the presence of an interfering target return in the reference window or in regions of abrupt change in background clutter power. The ordered statistics (OS) CFAR ... View full abstract»

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  • Performance of excision GO-CFAR detectors in nonhomogeneous environments

    Publication Year: 1996, Page(s):105 - 112
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (708 KB)

    The authors analyse a new CFAR detector which is composed of an excision processor and a greatest-of (GO)-CFAR detector. The new detector is named an excision GO(EXGO)-CFAR detector. Performance of EXGO-CFARs is derived and compared with the existing excision CA(EXCA)-CFAR detectors for Swerling I target model in homogeneous and nonhomogeneous noise environments such as multiple interferers and/or... View full abstract»

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  • Feature-mapping data fusion

    Publication Year: 1996, Page(s):65 - 70
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    A centralised plot-level data fusion technique, which is based on a neural network, is presented. A self-organised feature-mapping technique, which learns from sensor observations, is used to integrate the data from several sensors with various unknown measurement accuracies. Topological neighbourhood formulation among networks for integrating data is described. Computer simulations show that neur... View full abstract»

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  • Ground clutter model for airborne MPRF radars in look-down search mode

    Publication Year: 1996, Page(s):113 - 120
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1048 KB)

    The performances of a medium pulse repetition frequency (MPRF) radar operating in air-to-air look-down mode are strongly influenced by the presence of ground clutter. The clutter echo received both on the antenna main beam and side lobes can increase the number of false alarms. To correctly account for the effects of ground clutter, one has to develop a model capable of reproducing clutter charact... View full abstract»

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  • Performance of neural data associator

    Publication Year: 1996, Page(s):71 - 78
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (708 KB)

    The paper presents the performance of neural data association based on a mean field Hopfield network. The authors create a new energy function for measurement data association (MDA) that consists of assigning radar plots to predicted track positions which plays a key role in all track-while-scan systems. The network presented in the paper in combination with the new energy function can minimise a ... View full abstract»

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  • Simulations of the positioning accuracy of integrated vehicular navigation systems

    Publication Year: 1996, Page(s):121 - 128
    Cited by:  Papers (8)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (740 KB)

    The positioning performance of vehicular navigation systems based on a differential Global Position System (DGPS), dead-reckoning (DR), map matching (MM) and Kalman filter technologies are simulated. The vehicular navigation system using a 10-state extended Kalman filter to combine DGPS and DR can improve positioning accuracy. When DGPS signal obscuring occurs in the urban environment, DR with a m... View full abstract»

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  • Detection of coherent radar signals with unknown Doppler shift

    Publication Year: 1996, Page(s):79 - 86
    Cited by:  Papers (13)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (652 KB)

    The problem of detection of coherent radar signals with unknown Doppler shift in noise plus clutter, which is assumed to be Gaussian is addressed. The authors solve the detection problem and find the optimum ALR detector. Since it includes a difficult integral, they derive several suboptimum detectors including CGLRI AALR and CALR. Comparison of these detectors via computer simulations shows that ... 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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