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Proceedings of the IEEE

Issue 12 • Dec 1988

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Displaying Results 1 - 5 of 5
  • Microwave imaging of aircraft

    Publication Year: 1988, Page(s):1578 - 1592
    Cited by:  Papers (103)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1192 KB)

    Three methods of imaging aircraft from the ground with microwave radar with quality suitable for aircraft target recognition are described. The imaging methods are based on a self-calibration procedure called adaptive beamforming that compensates for the severe geometric distortion inherent in any imaging system that is large enough to achieve the high angular resolution necessary for two-dimensio... View full abstract»

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  • Techniques for analyzing frequency selective surfaces-a review

    Publication Year: 1988, Page(s):1593 - 1615
    Cited by:  Papers (541)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1914 KB)

    A number of representative techniques for analyzing frequency-selective surfaces (FSSs), which comprise periodic arrays of patches or apertures in a conducting screen and find important applications as filters in microwaves and optics, are discussed. The basic properties of the FSSs are reviewed and several different approaches to predicting their frequency-response characteristics are described. ... View full abstract»

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  • Orthogonality of exponential transients

    Publication Year: 1988, Page(s):1616 - 1618
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    It is shown that simple orthogonal representations exist for signals which are of a decaying, rather than purely sinusoidal nature. This orthogonality is expressed in terms of a weighting function. It is shown that alternate, nonuniform sampling techniques for representation and processing of these signals are appropriate. Using this nonuniform sampling scheme, a simple discrete representation, ve... View full abstract»

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  • Natural and artificially-initiated lightning and lightning test standards

    Publication Year: 1988, Page(s):1548 - 1565
    Cited by:  Papers (31)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1828 KB)

    Present understanding of both natural and artificially initiated lightning is first reviewed. The ways in which lightning can cause damage, the methods that are used to provide protection from that damage, and the test standards that are used to assess the immunity of systems from lightning damage are then examined. Finally, deficiencies in present approaches to lightning protection are pointed ou... View full abstract»

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  • Broadcast delivery

    Publication Year: 1988, Page(s):1566 - 1577
    Cited by:  Papers (130)  |  Patents (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1004 KB)

    The architecture and performance of systems that use a broadcast channel to deliver information to a community of users are discussed. Information is organized into units called pages, and at any instant of time, two or more users may request the same page. Broadcast delivery is attractive for such an environment because a single transmission of a page will satisfy all pending requests for that pa... View full abstract»

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H. Joel Trussell
North Carolina State University