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IEEE Aerospace and Electronic Systems Magazine

Issue 8 • Date Aug. 1992

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Displaying Results 1 - 5 of 5
  • An analysis of selected software safety standards

    Publication Year: 1992, Page(s):3 - 14
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1275 KB)

    Standards, draft standards, and guidelines that provide requirements for the assurance of high integrity software are studied. The focus is on identifying the attributes necessary in such documents for providing reasonable assurance for high integrity software, and on identifying the relative strengths and weaknesses of the documents. The documents vary widely in their requirements and the precisi... View full abstract»

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  • Battery charge controller characteristics in photovoltaic systems

    Publication Year: 1992, Page(s):15 - 21
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (730 KB)

    Typical strategies for battery charge regulation and load control in stand-alone photovoltaic (PV) systems are presented. Several charge algorithms (methods of controlling current to the battery) are presented, along with terminology used by the PV industry for battery charge controllers. Information gained from an extensive evaluation of commercially available charge controllers and data collecte... View full abstract»

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  • INMARSAT integrity channels for global navigation satellite systems

    Publication Year: 1992, Page(s):22 - 25
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB)

    The transmission of integrity information using a signal format compatible with the Global Positioning System (GPS) and relayed through a geostationary satellite repeater, which will be critical in achieving high integrity and availability of global navigation by satellite is discussed. The inclusion of navigation repeaters designed to fulfil this function, the next generation of INMARSAT spacecra... View full abstract»

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  • A bull market (GPS)

    Publication Year: 1992, Page(s):26 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB)

    An overview of GPS is provided from the perspective of a magazine editor, with an emphasis on marketplace applications of the technology. Maritime, aviation, and vehicle tracking uses are discussed, focusing growth in the civil sector. Reliability issues and future developments are considered.<> View full abstract»

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  • Urban area performance of GPS receiver with simultrac capability

    Publication Year: 1992, Page(s):29 - 33
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB)

    The theory of operation, practical applications, and technical performance of a Global Positioning System (GPS) receiver designed for urban area use are presented. The receiver tracks as many as eight satellites, or all visible satellites, and uses the signals of the four best satellites to ascertain its location. If visibility of one satellite is blocked, one of the additional satellites can be u... View full abstract»

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Aims & Scope

IEEE Aerospace and Electronic Systems Magazine is a monthly magazine that publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments as well as news and information of interest to IEEE Aerospace and Electronic Systems Society members.

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Meet Our Editors

Editor-in-Chief
Maria Sabrina Greco
Dept. of Information Engineering
University of Pisa
Via G.Caruso 16
56122 Pisa, Italy
Ph: +39 050 2217620
m.greco@ieee.org