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Radio and Electronic Engineer

Issue 12 • Date December 1979

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Displaying Results 1 - 9 of 9
  • WARC-1979

    Publication Year: 1979, Page(s):591 - 592
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (275 KB)

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  • Career selection techniques. A study of data processing staff selection

    Publication Year: 1979
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (151 KB)

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  • Automatic call recording equipment

    Publication Year: 1979, Page(s):602 - 603
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  • The role of satellites in the global weather experiment

    Publication Year: 1979, Page(s):604 - 610
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1069 KB)

    The Global Weather Experiment now drawing to a close has depended heavily on observations made by meteorological satellites in obtaining weather information from both Hemispheres. The roles played by the Meteosat and Tiros `N¿ systems are described in broad detail and a preliminary assessment of the meteorological data points the way to future improvements in weather forecasting techniques. View full abstract»

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  • Television measurements through psychophysics to subjective picture quality

    Publication Year: 1979, Page(s):611 - 619
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (997 KB)

    The most important property of a television system is the quality of the received picture as judged by the user. An explanation is offered of the way in which human beings quantify picture quality and the apparent magnitude of picture impairments. Although the explanation is speculative, it is hoped it will prove intuitively attractive, and will assist both the interpretation of the results of vis... View full abstract»

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  • A simple method for swept frequency response testing

    Publication Year: 1979, Page(s):621 - 628
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (706 KB)

    This paper deals with the design of simple, and relatively inexpensive, dedicated equipment which is tailored to test a 6th-order analogue pitch rate compensation unit using sweep frequencies and return signal processing to estimate gain and phase characteristics. It is shown that the test time required for an optimum swept frequency test compares very favourably with the total test time needed us... View full abstract»

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  • Digital transmission of video and audio signals over an optical-fibre system

    Publication Year: 1979, Page(s):629 - 636
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1015 KB)

    During 1977, BBC Research Department was invited to participate in field trials of an experimental optical-fibre digital transmission system installed between the Post Office telephone exchanges at Hitchin and Stevenage. BBC equipment was specially adapted for these trials to provide multiplexed digital video and audio signals at 140 Mbit/s and to decode these signals after transmission. High-qual... View full abstract»

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  • Using microprocessors to count microwave signals

    Publication Year: 1979, Page(s):637 - 642
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (589 KB)

    The harmonic heterodyne frequency measuring technique described here provides wide f.m. tolerance, high sensitivity and automatic amplitude discrimination. It requires only one microwave component¿a sampler¿and uses a microprocessor to perform the required computations. This minimizes the hardware content and facilitates data manipulation. View full abstract»

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  • Cellular pipeline digital filters

    Publication Year: 1979, Page(s):643 - 648
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (587 KB)

    This paper describes an efficient method for the implementation of digital filters with special-purpose hardware. The second-order section is realized by applying the canonic form algorithm in conjunction with two's complement serial arithmetic. The pipeline implementation was used for high-speed performance. The objectives were to obtain a cascaded cellular structure with small circuit complexity... View full abstract»

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