1–20 von 39 Ergebnissen
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    Technique for Predicting the Radio Frequency Field Strength Inside an Enclosure

    Hallett, Michael P. / Reddell, Jerry P. | NTRS | 1997
    which radio frequency occurs. The technique was developed to predict the RF field strength within a launch vehicle fairing in which some ...
    Verlag: NASA National Aeronautics and Space Administration

    Statistical analyses of RAM-C X-band signal strength data Final report

    NTRS | 1970
    Verlag: NASA National Aeronautics and Space Administration

    Autonomous Spacecraft Navigation Using Above-the-Constellation GPS Signals

    Winternitz, Luke | NTRS | 2017
    pose challenges, however, because receivers operating above the GPS constellations are subject to reduced signal strength and availability, and ...
    Verlag: NASA National Aeronautics and Space Administration

    Control and Non-Payload Communications (CNPC) Prototype Radio - Generation 2 Flight Test Report

    Ishac, Joseph A. / Iannicca, Dennis C. / Shalkhauser, Kurt A. et al. | NTRS | 2014
    describes results from the flight tests including flight parameters, received signal strength measurements, data latency times, and performance ...
    Verlag: NASA National Aeronautics and Space Administration

    Telescoping Solar Array Concept for Achieving High Packaging Efficiency

    Mikulas, Martin / Pappa, Richard / Warren, Jay et al. | NTRS | 2015
    m packaging efficiency, 150 W/kg specific power, 0.1 Hz deployed stiffness, and 0.2 g deployed strength. Much larger arrays with up to a ...
    Verlag: NASA National Aeronautics and Space Administration

    GPS Space Service Volume: Ensuring Consistent Utility Across GPS Design Builds for Space Users

    Bauer, Frank H. / Parker, Joel Jefferson Konkl / Valdez, Jennifer Ellen | NTRS | 2015
    GPS availability and signal strength originally specified for users on or near surface of Earth with transmitted power levels specified at ...
    Verlag: NASA National Aeronautics and Space Administration

    Composite Technologies for Science Missions

    Chelsea Pickett | NTRS
    (CFRP) in particular are sought after for their high specific strength and specific stiffness. CFRP components could be especially beneficial in ...
    Verlag: NASA National Aeronautics and Space Administration

    Initial Approach to Collect Small Unmanned Aircraft System Off-Nominal Operational Situations Data

    Jung, Jaewoo / Drew, Charles R. / Nag, Sreeja et al. | NTRS | 2018
    signal strength, for the remaining 71 operations suggesting that some operators may not be monitoring unmanned aircraft communications system ...
    Verlag: NASA National Aeronautics and Space Administration

    Development of an Interoperable GNSS Space Service Volume

    Parker, Joel J. / Bauer, Frank H. / Ashman, Benjamin W. et al. | NTRS | 2018
    . Available signals in these regimes are very limited for any single GNSS constellation due to the weak signal strength, the blockage of signals by ...
    Verlag: NASA National Aeronautics and Space Administration

    Assessing Utility of Different Orbits for a Lunar PNT Constellation

    Cheryl Gramling / Theresa Beech / Eric Poole et al. | NTRS
    keeping, variable signal strength, divergent CONOPS for different planes of the constellation.) The system’s performance is considered both ...
    Verlag: NASA National Aeronautics and Space Administration

    Development of an Interoperable GNSS Space Service Volume

    Parker, Joel J. K. / Bauer, Frank H. / Ashman, Benjamin W. et al. | NTRS | 2018
    . Available signals in these regimes are very limited for any single GNSS constellation due to the weak signal strength, the blockage of signals by ...
    Verlag: NASA National Aeronautics and Space Administration

    GPS Space Service Volume: Ensuring Consistent Utility Across GPS Design Builds for Space Users

    Bauer F. H. / Parker J. J. K. / Valdez J. E. | NTIS | 2015
    GPS availability and signal strength originally specified for users on or near surface of Earth with transmitted power levels specified at ...
    Verlag: National Aeronautics and Space Administration, Washington, DC.

    Volume Raycasting of GNSS Signals through Ground Structure Lidar for UAV Navigational Guidance and Safety Estimation

    Andrew J Moore / Matthew Schubert / Nicholas Rymer et al. | NTRS
    , we match the GNSS signal strength with raycast-derived foliage obstruction depth at hundreds of observation times from 55 recordings ...
    Verlag: NASA National Aeronautics and Space Administration

    The Multi-GNSS Space Service Volume

    Parker, Joel J. / Bauer, Frank H. / Ashman, Benjamin W. et al. | NTRS | 2018
    . Available signals in these regimes are very limited for any single GNSS constellation due to the weak signal strength, the blockage of signals by ...
    Verlag: NASA National Aeronautics and Space Administration

    The Lunar GNSS Receiver Experiment (LuGRE)

    Joel J K Parker / Fabio Dovis / Benjamin Anderson et al. | NTRS
    priorities are outlined. Simulated performance results are shown based on the latest calibrated models including signal strength, signal availability ...
    Verlag: NASA National Aeronautics and Space Administration

    Initial Approach to Collect Small Unmanned Aircraft System Off-Nominal Operational Situations Data

    Jung, Jaewoo / Drew, Charles / Nag, Sreeja et al. | NTRS | 2018
    signal strength, for the remaining 71 operations suggesting that some operators may not be monitoring unmanned aircraft communications system ...
    Verlag: NASA National Aeronautics and Space Administration

    Wireless Network Simulation in Aircraft Cabins

    Beggs, John H. / Youssef, Mennatoallah / Vahala, Linda | NTRS | 2004
    An electromagnetic propagation prediction tool was used to predict electromagnetic field strength inside airplane cabins. A commercial ...
    Verlag: NASA National Aeronautics and Space Administration

    Electromagnetic Propagation Prediction Inside Aircraft Cabins

    Hankins, Genevieve / Vahala, Linda / Beggs, John H. | NTRS | 2004
    Electromagnetic propagation models for signal strength prediction within aircraft cabins are essential for evaluating and designing a ...
    Verlag: NASA National Aeronautics and Space Administration

    Range recording technique enables four-way polarization measurements

    Swindall, P. M. | NTRS | 1967
    Manually tracked antenna is the most critical part of range recording system which has signal strength recording responses from dc to 20 ...
    Verlag: NASA National Aeronautics and Space Administration

    Antenna design and development for the microwave subsystem experiments for the terminal configured vehicle project

    Becher, J. / Cohen, N. / Rublee, J. | NTRS | 1981
    obtain signal strength based on a described flight path was written. The application of this model to evaluate the signal transmission obtained ...
    Verlag: NASA National Aeronautics and Space Administration