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Radar, Sonar and Navigation, IEE Proceedings -

Issue 2 • Date Apr 2004

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Displaying Results 1 - 8 of 8
  • Limitations of nonlinear chaotic dynamics in predicting sea clutter returns

    Publication Year: 2004 , Page(s): 105 - 113
    Cited by:  Papers (4)
    Click to expandAbstract | PDF file iconPDF (2095 KB)  

    The ability to describe sea clutter returns via nonlinear, and more specifically chaotic, dynamics is examined. It is shown that the commonly used chaotic invariant measures of correlation dimension and Lyapunov exponent are incapable of uniquely identifying chaotic processes, and produce similar results for measured sea clutter returns and simulated stochastic processes. The potential existence o... View full abstract»

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  • Adaptive anti-interference technique using subarrays in HF surface wave radar

    Publication Year: 2004 , Page(s): 100 - 104
    Cited by:  Papers (6)
    Click to expandAbstract | PDF file iconPDF (1533 KB)  

    To improve the capability of high frequency (HF) surface wave radar to suppress interference, an adaptive anti-interference technique was evaluated by using subarrays in OSMAR2000 (Ocean State Monitor and Analysis Radar, manufactured in 2000). The authors propose a scheme to suppress the external HF radio strong interference based on OSMAR2000 radar without increasing any auxiliary facilities, and... View full abstract»

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  • Non-cooperative target recognition in the frequency domain

    Publication Year: 2004 , Page(s): 77 - 84
    Cited by:  Papers (9)
    Click to expandAbstract | PDF file iconPDF (1379 KB)  

    Non-cooperative target recognition is investigated in the frequency domain using measured in-flight aircraft data. It is found that the frequency domain target signatures are distinct for different aircraft types and at different aspects. As a result, target identification in the frequency domain is just as viable as using conventional high-range resolution profiles in the range domain. In additio... View full abstract»

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  • Reconstruction of textured seafloors from side-scan sonar images

    Publication Year: 2004 , Page(s): 114 - 126
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (1911 KB)  

    The seafloor is subject to attention and exploitation in many branches of science and technology. The acquisition of seabed information using AUVs equipped with a visual system composed of cameras and sonars is becoming more common. However, although most of these sensors, such as side-scan sonar, can generate a 2-D representation of the seafloor, 3-D information, which is crucial for environmenta... View full abstract»

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  • Pattern recognition of multiple signals from ground penetrating radar for metal and plastic objects

    Publication Year: 2004 , Page(s): 91 - 99
    Cited by:  Papers (1)
    Click to expandAbstract | PDF file iconPDF (1551 KB)  

    The author describes methods for pattern recognition of multiple time signals of embedded targets in water or soil. The received time signals are investigated using characteristic features of metal and plastic pipes in water for better detection of plastic and for soil with noisy signals. The classification of time signals is done by statistical signal parameters, ARMAX, Prony modelling, a new dif... View full abstract»

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  • Approach to object classification using dispersive scattering centres

    Publication Year: 2004 , Page(s): 85 - 90
    Cited by:  Papers (6)
    Click to expandAbstract | PDF file iconPDF (1530 KB)  

    The dispersive scattering centre (DSC) model characterises high-frequency backscatter from radar objects as a finite sum of localised scattering geometries distributed in range. These geometries, along with their locations, can be conveniently used as features in a one-dimensional automatic object recognition algorithm. The DSC model's type and range parameters correspond to geometry and distance ... View full abstract»

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  • Bounding the angular scale factor error for adaptive arrays

    Publication Year: 2004 , Page(s): 71 - 75
    Click to expandAbstract | PDF file iconPDF (1582 KB)  

    When compared with a conventional gimballed antenna a phased-array antenna conveys some important advantages to a tracking radar system, including inertialess beam-steering and the ability to modify the beam pattern to suppress interference. For successful tracking of a radar target the linearity of the antenna angular response must be carefully controlled. The effect of array calibration errors o... View full abstract»

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  • Simultaneous localisation of multiple emitters

    Publication Year: 2004 , Page(s): 65 - 70
    Cited by:  Papers (4)  |  Patents (1)
    Click to expandAbstract | PDF file iconPDF (1330 KB)  

    Exploiting several arrays of sensors enables simultaneous detection of a number of emitters. Fusion of the respective array data yields lines containing possible positions as a function of the frequency. Identifying multiple intersections eventually leads to unambiguous localisation of the sources. The usual unwanted ghost detections do not appear in this approach. Simulations are performed to dem... 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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