1–20 von 45 Ergebnissen
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    Advanced Communications Technology Satellite (ACTS)

    Olmstead, Dean A. / Schertler, Ronald J. | NTRS | 1990
    those of current satellite systems, such as on-demand assignment, frequency reuse, and the flexible targeting of spot beams directly to the very ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    20/30 GHz satellite personal communications networks

    Palmer, L. C. / Stern, A. / Sohn, P. Y. | NTRS | 1992
    The feasibility of personal communications networks that can provide 4.8-kbps voice communications between portable terminals and a hub ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Optical intersatellite links - Application to commercial satellite communications

    Paul, D. / Faris, F. / Garlow, R. et al. | NTRS | 1992
    Application of optical intersatellite links for commercial satellite communications services is addressed in this paper. The feasibility of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    The Challenges of Integrating and Testing the Advanced Communications Technology Satellite (ACTS)

    Baciuska, Philip C. / Dhanjal, Sutinder S. | NTRS | 1990
    The program for integration and testing the ACTS is outlined. Special attention is given to the test objectives, the ACTS automated ground ...
    Verlag: NASA National Aeronautics and Space Administration

    Circuit-switch architecture for a 30/20-GHz FDMA/TDM geostationary satellite communications network

    Ivancic, William D. | NTRS | 1992
    (FDMA/TDM) geostationary satellite communications network. Critical subsystems and problem areas are identified and addressed. Work was ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Satellite delivery of B-ISDN services

    Kwan, R. K. / Price, K. M. / Chitre, D. M. et al. | NTRS | 1992
    This paper will address the role of technology in the satellite delivery of B-ISDN services. Satellites excel in serving remote users and ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Satellite sound broadcast propagation measurements and system impairments

    Vogel, Wolfhard J. / Torrence, Geoffrey W. / Golshan, Nasser | NTRS | 1992
    An evaluation of the operational characteristics of indoor portable reception of satellite sound reception has identified the nature of UHF ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Technical and economic feasibility of integrated video service by satellite

    Price, K. M. / Kwan, R. K. / White, L. W. et al. | NTRS | 1992
    . Attention is given to video standards, video traffic scenarios, satellite system architecture, and user costs. ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    A direct broadcast satellite-audio experiment

    Vaisnys, Arvydas / Abbe, Brian / Motamedi, Masoud | NTRS | 1992
    ) via satellite. The thrust of the work to date has been on designing power and bandwidth efficient systems capable of providing reliable ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Data distribution satellite system architecture concept

    Price, Kent M. / Jorasch, Ronald E. | NTRS | 1990
    This paper describes a future communications satellite system architecture concept called the Data Distribution Satellite (DDS). The DDS is ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    ACTS Multibeam Communications Package - Description and Performance Characterization

    Cashman, William F. | NTRS | 1992
    To maintain its competitive position in the 1990s, satellite communications must evolve to provide new services and to reduce the costs of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    The tracking and data relay satellite system - An historical perspective

    Elwell, Daniel W. / Levine, Allen J. / Harris, David W. | NTRS | 1992
    The Tracking and Data Relay Satellite System (TDRSS), NASA's primary communications link between near-earth orbiting spacecraft and the ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Interference susceptibility measurements for an MSK satellite communication link

    Kerczewski, Robert J. / Fujikawa, Gene | NTRS | 1992
    The results are presented of measurements of the degradation of an MSK satellite link due to modulated and CW (unmodulated) interference ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Advances in MMIC technology for communications satellites

    Leonard, Regis F. | NTRS | 1992
    application in space communications. Emphasis will be on the improved performance in power amplifiers and low noise receivers which has been made ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Electronics And Electrical Engineering

    On-board processing satellite network architectures for broadband ISDN

    Inukai, Thomas / Faris, Faris / Shyy, Dong-Jye | NTRS | 1992
    Onboard baseband processing architectures for future satellite broadband integrated services digital networks (B-ISDN's) are addressed. To ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Challenges of a 20/30 GHz Personal Access Satellite System

    Sue, Miles K. / Jamnejad, V. | NTRS | 1992
    Personal Access Satellite System (PASS) will be able to advance mobile satellite communications to a level of availability at which both personal ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Role of communications satellites in the fiber era

    Price, Kent M. / Jorasch, Ronald E. / Morgan, Walter L. | NTRS | 1990
    the years 1990 and 1995. Based on this information, the impact of fiber optics on satellite communications in the years 1995 and 2000 is ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    ACTS Multibeam Communications Package - Technology for the 1990S

    Graebner, John C. / Cashman, William F. | NTRS | 1990
    To maintain its competitive position in the 1990s, satellite communications must evolve to provide new services and to reduce the costs of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    A CDMA architecture for a Ka-band Personal Access Satellite System

    Motamedi, Masoud / Sue, Miles K. | NTRS | 1990
    satellite is described along with the access methods and frequency/time plans. The complexity of developing this system using the CDMA architecture ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Performance measurements for a laboratory-simulated 30/20 GHz communication satellite transponder

    Kerczewski, Robert J. | NTRS | 1990
    NASA has developed a digital satellite communications system simulator and test bed facility, known as the SITE (System Integratrion, Test ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar