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IEEE Aerospace and Electronic Systems Magazine

Issue 4 • April 1993

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Displaying Results 1 - 5 of 5
  • Spacecraft on-orbit deployment anomalies: What can be done?

    Publication Year: 1993, Page(s):3 - 15
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1998 KB)

    On-orbit anomalies related to the deployment of spacecraft appendage and possible causes of such failures are considered. The discussion covers mechanical launch loading, on-orbit thermal and solar concerns, reliability of spacecraft pyrotechnics, and practical limitations of ground-based deployment testing. Lessons learned from the successful recovery of the Telesat Canada Anik-E2 satellite in 19... View full abstract»

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  • Digital data over video channels: Techniques for Spacelab

    Publication Year: 1993, Page(s):16 - 24
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB)

    Various techniques for transmitting digital data over a composite video channel are examined, with a view to transmitting data from experiments on the Space Shuttle orbiter. PSK (phase-shift keying), MPSK (m-ary PSK), or PAM (pulse-amplitude modulation), which can be transmitted on visible lines of a frame, unassigned lines of the VBI (vertical blanking interval), or during the HBI (horizontal bla... View full abstract»

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  • Software radios: Survey, critical evaluation and future directions

    Publication Year: 1993, Page(s):25 - 36
    Cited by:  Papers (178)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1073 KB)

    A software radio is defined as a set of digital signal processing (DSP) primitives, a metalevel system for combining the primitives into communication system functions (transmitter, channel model, receiver, etc.), and a set of target processors on which the software radio is hosted for real-time communications. The performance of enabling hardware technologies is related to software radio requirem... View full abstract»

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  • GPS autoland considerations

    Publication Year: 1993, Page(s):37 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    It is pointed out that fully automatic hands-off landing (autoland) capability for commercial aircraft, using the Global Positioning System (GPS), has not been demonstrated, and that ground multipath errors limit vertical positioning accuracy. An evolving integrated-sensor-based architecture for approach and landing, called the tunnel concept, is examined. The precise velocity information availabl... View full abstract»

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  • The Master of Science Program in Systems Management at Capitol College

    Publication Year: 1993, Page(s):41 - 43
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (335 KB)

    The objectives, requirements, and curriculum of the program are described.<> 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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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