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IEE Proceedings - Radar, Sonar and Navigation

Issue 6 • Dec 1994

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Displaying Results 1 - 8 of 8
  • Characterisation of microwave four-parameter materials and its application in wideband radar absorber design

    Publication Year: 1994, Page(s):337 - 340
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    A new free-space measurement technique for the characterisation of four-parameter microwave materials is presented. The method employed offers the advantage of evaluating the specimen under conditions close to those of the operational environment. In addition, it does not require reconfiguration of the system during the measurement process. The procedure is shown to be tolerant of measurement erro... View full abstract»

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  • Attributed relational tree approach to signal classification

    Publication Year: 1994, Page(s):319 - 324
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (368 KB)

    An automatic method for target identification which uses a pattern recognition algorithm to analyse an ensemble of range image profiles is presented. Such profiles are typical of those produced by high resolution radar and sonar systems employing pulse compression techniques. The approach uses an attributed relational tree model to characterise features extracted from the waveform image profile. T... View full abstract»

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  • Parallel implementation of IMM tracking algorithm using transputers

    Publication Year: 1994, Page(s):325 - 332
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (456 KB)

    The paper discusses the implementation of the interacting multiple model (IMM) target tracking algorithm on a transputer network. Particular interest is focused on the efficient implementation of the algorithm in the parallel processing design. The experimental results show that for a parallel implementation with four transputers, a speedup of around three can be obtained View full abstract»

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  • Medium PRF set selection: an approach through combinatorics

    Publication Year: 1994, Page(s):307 - 311
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (304 KB)

    Modern fighter aircraft use a host of different techniques to search for and detect airborne targets. One such technique involves the use of pulse Doppler and a collection of `medium' pulse repetition frequencies (PRFs). Such a collection of medium PRFs is ambiguous in both range and velocity (Doppler frequency), but can be resolved by correlating data from different members of the set. The PRF se... View full abstract»

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  • Alternative algorithm for maximum likelihood DOA estimation and detection

    Publication Year: 1994, Page(s):293 - 299
    Cited by:  Papers (5)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (552 KB)

    The majority of algorithms developed for the narrowband direction of arrival (DOA) estimation problem rely on an eigenvalue decomposition (EVD) to determine both the number of signals and their respective DOAs. An alternative algorithm is presented that solves both the DOA detection and estimation problems without resorting to an EVD. The algorithm is shown to have asymptotically equivalent perfor... View full abstract»

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  • Critical distance and the performance of sensor array geometries

    Publication Year: 1994, Page(s):333 - 336
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    In antisubmarine warfare (ASW) an aircraft is often used to drop sonobuoys in a pattern to try to locate an enemy submarine. If a target is detected, it may be necessary to drop more sensors to improve the direction of arrival (DOA) resolution in the direction of the target. The authors analyse the two source case in detail and develop a critical distance definition that plays a major role in the ... View full abstract»

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  • Fast algorithm for adaptive beamforming of cyclic signals

    Publication Year: 1994, Page(s):312 - 318
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    There has been an explosive increase in the demand of radio channels in cellular communication systems. Due to the finite limit of the frequency spectrum the number of available channels is bounded. This constraint has become a bottleneck of next-generation wireless communication systems. Some array beamforming techniques have been proposed to solve this problem by the space-division multiple acce... View full abstract»

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  • Mode-space spatial spectral estimation for circular arrays

    Publication Year: 1994, Page(s):300 - 306
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (476 KB)

    The application of superresolution techniques to circular arrays in mode space is proposed. This formulation allows the use of algorithms that are otherwise specific to equispaced linear arrays, with the added benefit of full 360° azimuth coverage. Coherent signals can be decorrelated by a mode-space version of the spatial smoothing technique, and, in the case of broadband signals, through an ... 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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