IEEE Transactions on Vehicular Technology

Issue 3 • Nov. 1969

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Displaying Results 1 - 10 of 10
  • [Front cover and table of contents]

    Publication Year: 1969, Page(s): c1
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    Freely Available from IEEE
  • Alarm and identification features of the Southern California rapid transit district bus radio system

    Publication Year: 1969, Page(s):101 - 105
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1279 KB)

    The Southern California Rapid Transit District (SCRTD) two-way radio system now in service provides voice communication and a silent alarm feature for safety purposes. The same equipment also provides automatic transmitter identification. These features have been accomplished using an added logic assembly installed in the driver's area of the bus not far from the handset hanger. The equipment send... View full abstract»

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  • Vehicle location by a signal attenuation method

    Publication Year: 1969, Page(s):105 - 109
    Cited by:  Papers (41)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB)

    A method of vehicle location is discussed in which the attenuation of the signal from a mobile transmitter is measured. A test system and procedure for obtaining data is described. A series of curves are developed which specify the anticipated error for a four-station grid. The signal strength measurements could be very tedious and time consuming, but a system was devised that makes it possible to... View full abstract»

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  • The effects of cochannel interference on the parameters of a small-cell mobile telephone system

    Publication Year: 1969, Page(s):110 - 116
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    In a small-cell mobile telephone system, each channel may be used simultaneously in cells spaced sufficiently apart to limit cochannel interference. The extent of the interference depends upon the distance between cochannel cells, the number of land stations per cell, and the receiver capture ratio. The quantitative relationships among these parameters are derived for various cell configurations. View full abstract»

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  • Satellite repeater arrangement in a new maritime mobile telephone system

    Publication Year: 1969, Page(s):116 - 123
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1271 KB)

    A new maritime mobile radio telephone system adopted by Nippon Telegraph and Telephone Public Corporation (NTT), is described. An outline of the technical features of the entire system and the satellite repeater arrangement, adopted to reduce service-dead areas, is given. View full abstract»

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  • Direct-printing telegraph equipment with forward error correction for use in maritime mobile service

    Publication Year: 1969, Page(s):124 - 129
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (479 KB)

    Forward error-correction equipment based on cyclic coding, which is applicable for selective calling and direct-printing systems in the maritime mobile service, is described. Some field test results are presented. View full abstract»

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  • Multiple-frequency reception with a priority channel

    Publication Year: 1969, Page(s):130 - 134
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB)

    A requirement for multiple frequency reception is placed on many mobile radio systems. The disadvantages of the present multiple frequency monitoring methods are reviewed and the design considerations of a new unique technique which overcomes these limitations are presented. Basically, this method utilizes sampling or time-sharing to always assure reception of the system's primary channel. View full abstract»

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  • A study of automatic car following

    Publication Year: 1969, Page(s):134 - 140
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Virtually all proposed vehicle control systems for highway automation must include a steady-state car-following mode. This mode was intensively investigated for various situations where headway and relative velocity inputs were used. In addition, a fundamental relationship between the flow capacity of an automated highway and the small-signal longitudinal response of a vehicle was investigated. Th... View full abstract»

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  • Receiver intermodulation: Enforcing the square law

    Publication Year: 1969, Page(s):141 - 145
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (527 KB)

    The mathematics of intermodulation (IM) generation are surveyed, and it is shown that for land mobile receivers, worst case IM is a third-order effect occurring in the first mixer. The importance of relating the IM specification to the receiver sensitivity is pointed out. RF gain reduction or elimination, selectivity at both RF and IF, and the new square law mixing devices are all mentioned as tec... View full abstract»

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  • [Back cover]

    Publication Year: 1969, Page(s): c4
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    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Vehicular Technology covers land, airborne, and maritime mobile services, vehicular electrotechnology, equipment, and systems identified with the automotive industry.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Nei Kato, Professor
Graduate School of Information Sciences (GSIS)
Tohoku University
Aramaki-Aoba 6-3-09, Aoba-ku, Sendai, 980-8579, JAPAN
Email: kato@it.is.tohoku.ac.jp