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    Addressing the Influence of Space Weather on Airline Navigation

    Sparks, Lawrence | NTRS | 2012
    strongly influenced by space weather, the safety and reliability of GNSS for airline navigation requires continual monitoring of the state of the ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Air Transportation And Safety

    Aerobrake guidance law synthesis using feedback linearization

    Menon, P. K. A. | NTRS | 1991
    nonlinear point-mass vehicle model with lift, bank angle and drag modulation as the three control variables. The guidance law uses detailed vehicle ...
    Verlag: NASA National Aeronautics and Space Administration

    A Focus on Navigation Performance Near Perilune in a Near Rectilinear Halo Orbit for a Crewed Station

    Clark P Newman / Diane C Davis / Scott Cryan | NTRS
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Aircraft Dynamic Modeling in Turbulence

    Morelli, Eugene A. / Cunninham, Kevin | NTRS | 2012
    A method for accurately identifying aircraft dynamic models in turbulence was developed and demonstrated. The method uses orthogonal ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Aircraft Stability And Control

    An electronic pan/tilt/zoom camera system

    Zimmermann, Steve / Martin, H. L. | NTRS | 1992
    A small camera system is described for remote viewing applications that employs fisheye optics and electronics processing for providing pan ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Instrumentation And Photography

    Application and Use of Lunar Node-Derived Beacons for Lunar Surface Navigation

    Evan J. Anzalone / Tamara Statham / Michael Fritzinger | NTRS
    To maximize the scientific return and safety of operations on the lunar surface, multiple civil organizations are investing in Position ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command and Tracking

    A Survey of the Spacecraft Line-Of-Sight Jitter Problem

    Dennehy, Cornelius J. / Alvarez-Salazar, Oscar S. | NTRS | 2019
    LoS jitter requirements will be provided. Some lessons learned and a set of recommended rules of thumb are also presented to provide guidance ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Instrumentation And Photography

    Atmospheric Models for Aerocapture

    Justus, C. G. / Duval, Aleta / Keller, Vernon W. | NTRS | 2003
    -random density perturbations for Monte Carlo analyses in developing guidance, navigation and control algorithms, and for thermal systems design ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration

    Attitude control system conceptual design for the X-ray timing explorer

    Bauer, Frank H. / Femiano, Michael D. / Mosier, Gary E. | NTRS | 1992
    structure and dynamics of compact X-ray sources, neutron stars, white dwarfs, and other stellar objects with X-ray energy emissions. The demanding ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Cassini at Saturn Proximal Orbits - Attitude Control Challenges

    Burk, Thomas A. | NTRS | 2013
    control team deals with radiation hazards. The angular size and unique geometry of the rings and Saturn near periapsis means that star ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration

    CCD sensors for interplanetary spacecraft navigation and pointing control

    Eisenman, A. R. / Armstrong, R. W. | NTRS | 1981
    pointing control. Onboard processing of video data is a crucial element in this transition and is made possible by CCD imagers and microprocessors ...
    Verlag: NASA National Aeronautics and Space Administration

    Characterization of a Prototype Radio Frequency Space Environment Path Emulator for Evaluating Spacecraft Ranging Hardware

    Mitchell, Jason W. / Baldwin, Philip J. / Kurichh, Rishi et al. | NTRS | 2007
    simulation facility for end-to-end guidance, navigation and control (GN&C) design and analysis of formation flying spacecraft. The core capabilities ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Conceptual Design of the TPF-O SC Buses

    Purves, Lloyd R. | NTRS | 2007
    The Terrestrial Planet Finder - Occulter (TPF-O) mission has two Spacecraft (SC) buses, one for a space telescope and the other for a ...
    Verlag: NASA National Aeronautics and Space Administration

    Control/structure interactions of Freedom's solar dynamic modules

    Quinn, R. D. / Yunis, I. | NTRS | 1990
    the presence of pointing and tracking requirements. A control approach is introduced for the simultaneous tracking and vibration control of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Current and Near-Term Future Measurements of the Orbital Debris Environment at NASA

    Stansbery, Gene / Liou, J.-C. / Mulrooney, M. et al. | NTRS | 2010
    The NASA Orbital Debris Program Office places great emphasis on obtaining and understanding direct measurements of the orbital debris ...
    Verlag: NASA National Aeronautics and Space Administration

    Development of a Radio Frequency Space Environment Path Emulator for Evaluating Spacecraft Ranging Hardware

    Mitchell, Jason W. / Baldwin, Philip J. / Kurichh, Rishi et al. | NTRS | 2007
    simulation facility for end-to-end guidance, navigation and. control (GN&C) design and analysis of formation flying spacecraft. The core capabilities ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Dynamic Control System Performance during Commissioning of the Space Technology 7-Disturbance Reduction System Experiment of LISA Pathfinder

    Hsu, Oscar / Maghami, Peiman / O’Donnell, James R., Jr. et al. | NTRS | 2017
    MicroNewton Thrusters, and Dynamic Control System (DCS) algorithms implemented on the IAU. During the portions of the mission in which the DRS was ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Dynamics and Control of a Tethered Enhanced Gravity Tractor Performing Asteroid Deflection

    Shen, Haijun / Roithmayr, Carlos M. / Li, Yingyong | NTRS | 2018
    The dynamics and control of an Enhanced Gravity Tractor (EGT) augmented with a tether for deflecting an asteroid are studied. A ...
    Verlag: NASA National Aeronautics and Space Administration

    Effect of the near earth environment on the attitude of a slowly spinning multibody satellite

    Anand, D. K. / Sturmanis, M. / Whisnant, J. M. | NTRS | 1968
    External perturbation effects of near earth environment on dynamics and attitude of slowly spinning multibody satellite ...
    Verlag: AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS,

    En Route Descent Advisor Multi-Sector Planning Using Active and Provisional Controller Plans

    Vivona, Robert / Green, Steven | NTRS | 2003
    As decision support tools are developed to support controllers in complex air traffic control environments, new approaches to maintaining ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Documentation And Information Science

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