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    L2 Earth atmosphere observatory : formation guidance, metrology, and control synthesis

    Acikmese, Behcet A. / Mettler, Edward / Breckenridge, William G. et al. | NTRS | 2004
    the synthesis and analysis of the guidance, metrology and control for a two-spacecraft formation in a unique continuously powered orbit near ...
    Verlag: NASA National Aeronautics and Space Administration

    Hubble Space Telescope Fine Guidance Sensor and Two-Gyro Control Law Design, Implementation, and On-Orbit Performance

    Clapp, Brian R. | NTRS | 2005
    magnetometers, star trackers, and Fine Guidance Sensors (FGSs) to control vehicle rate about the missing gyro axis. The three aforementioned sensors are ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Instrumentation And Photography

    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

    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

    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

    HUD Guidance for the ASKA Experimental STOL Aircraft using Radar Position Information

    Yazawa, Kenji / Terui, Yushi / Hardy, Gordon H. | NTRS | 1992
    The paper describes a high performance HUD guidance system installed on the experimental powered-lift STOL aircraft Aska. Since the maiden ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Aircraft Communications And Navigation

    Testing of the Lunar Reconnaissance Orbiter Attitude Control System Re-Design Without a Gyro

    Halverson, Julie / Calhoun, Phil / Hsu, Oscar et al. | NTRS | 2019
    observe various sciencetargets. LRO attitude control system (ACS) has two star trackers and a gyro forattitude estimation in an extended Kalman ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Estimation and Modeling of Enceladus Plume Jet Density Using Reaction Wheel Control Data

    Lee, Allan Y. / Wang, Eric K. / Pilinski, Emily B. et al. | NTRS | 2010
    the known and unique transfer function between the disturbance torque and the attitude control error, the collected attitude control error ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

      Estimation and Modeling of Enceladus Plume Jet Density Using Reaction Wheel Control Data

      Lee, Allan Y. / Wang, Eric K. / Pilinski, Emily B. et al. | NTRS | 2010
      the known and unique transfer function between the disturbance torque and the attitude control error, the collected attitude control error ...
      Verlag: NASA National Aeronautics and Space Administration
      Schlagwörter: Lunar And Planetary Science And Exploration , Space Communications, Spacecraft Communications, Command And Tracking

    Estimation of Gravitation Parameters of Saturnian Moons Using Cassini Attitude Control Flight Data

    Krening, Samantha C. | NTRS | 2013
    of interest not only to scientists but also to attitude control engineers. When the Cassini spacecraft flies close to a moon, a gravity ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: attitude control

    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

    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

    New Worlds Observer Formation Control Design Based on the Dynamics of Relative Motion

    Luquette, Richard J. | NTRS | 2008
    timeline: science (fine pointing), realignment and transition. This paper examines formation control strategies in the context of dynamics of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration

    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

    Estimation and Modeling of Enceladus Plume Density Using Attitude Control Data Collected by the Cassini Spacecraft During Low-Altitude Enceladus Flybys

    Wang, Eric K. / Lee, Allan Y. | NTRS | 2011
    30, 2004. Major science objectives of the Cassini mission include investigations of the configuration and dynamics of Saturn's magnetosphere ...
    Verlag: NASA National Aeronautics and Space Administration

    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

    Pointing and figure control system for a space-based far-IR segmented telescope

    Lau, Kenneth | NTRS | 1993
    A pointing and figure control system for two space-based far-IR telescopes, the 10-20 m Large Deployable Reflector and the 3.6 m ...
    Verlag: NASA National Aeronautics and Space Administration

    Relative Terrain Imaging Navigation (RETINA) Tool for the Asteroid Redirect Robotic Mission (ARRM)

    Wright, Cinnamon A. / Van Eepoel, John / Liounis, Andrew et al. | NTRS | 2016
    As a part of the NASA initiative to collect a boulder off of an asteroid and return it to Lunar orbit, the Satellite Servicing Capabilities ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Guidance , Control

    OSIRIS-REx Touch-And-Go (TAG) Mission Design and Analysis

    Berry, Kevin / Sutter, Brian / May, Alex et al. | NTRS | 2013
    launching in 2016 to rendezvous with the near-Earth asteroid (101955) 1999 RQ36 in late 2018. After several months in formation with and orbit about ...
    Verlag: NASA National Aeronautics and Space Administration

    Osiris-Rex Post-Tag Observation Trajectory Design and Navigation Performance

    Daniel R Wibben / Andrew Levine / Samantha Rieger et al. | NTRS
    created that satisfied the numerous constraints that were levied in order to place utmost importance on the safety of the spacecraft and stowed ...
    Verlag: NASA National Aeronautics and Space Administration

    Preliminary Design, Testing, and Performance of the LOFTID Navigation System

    Joel Amert / Kyle Miller / Evan Anzalone | NTRS | 2020
    payload. Due to system constraints, including spin stabilization, unknown time of day, a limited space available for antennas, and a heat shield ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing and Performance

    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

    Integrated GNC Modifications and Performance Assessments for the Mars Ascent Vehicle, Spin-Stabilized Upper Stage Configuration

    Dane Erickson / Jason Everett / Joseph Powers et al. | NTRS
    necessary for successful orbital insertion, and a spin-stabilized control law for a preliminary low-rate first stage spin-up. Trades were conducted ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    Use and Protection of GPS Sidelobe Signals for Enhanced Navigation Performance in High Earth Orbit

    Parker, Joel J. K. / Valdez, Jennifer E. / Bauer, Frank H. et al. | NTRS | 2016
    The application of the Global Positioning System (GPS) for navigation of spacecraft in High and Geosynchronous Earth Orbit (HEO/GEO) has ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking , Communications And Radar

    Solar Dynamics Observatory On-Orbit Jitter Testing, Analysis, and Mitigation Plans

    Liu, Kuo-Chia (Alice) / Blaurock, Carl A. / Bourkland, Kristin L. et al. | NTRS | 2011
    The Solar Dynamics Observatory (SDO) was designed to understand the Sun and the Sun s influence on Earth. SDO was launched on February 11 ...
    Verlag: NASA National Aeronautics and Space Administration

    Necessary and Sufficient Conditions for Attitude Estimation in Fractionated Spacecraft Systems

    Blackmore, Lars / Hadaegh, Fred Y. | NTRS | 2009
    tracker to the module without a star tracker, and each of the relative measurements along the path has either multiple non-collinear beacons or a ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    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

    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

    Navigating the Return Trip from the Moon Using Earth-Based Ground Tracking and GPS

    Berry, Kevin / Carpenter, Russell / Moreau, Michael C. et al. | NTRS | 2009
    critical phases of a lunar mission is the series of burns performed to leave lunar orbit, insert onto a trans-Earth trajectory, and target a ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Ground Support Systems And Facilities (Space)

    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

    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

    High Ballistic Coefficient Mars EDL with Supersonic Retropropulsion

    Noyes, Connor / Wolf, Aron / Benito, Joel | NTRS | 2017
    dense than Earth’s atmosphere. As a result, hypersonic deceleration occurs slowly throughout atmospheric entry and additional deceleration ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Transportation And Safety

    Global Positioning System Constellation Modernization Impact on Sidelobe Capable GPS Receivers in Geostationary Orbit

    Graeme Ramsey / Jim Chapel / Mark Crews et al. | NTRS
    This paper provides on-orbit insight into Global Positioning System Receiver (GPSR) performance at a geostationary orbit (GEO) and ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Up, Up and Away: Arc Minute Pointing at 130,000 Feet

    Freesland, Doug / Gruner, Timothy / Olney, Dave et al. | NTRS | 2005
    instrument's narrow field of view, a precision arc-minute attitude determination and control systems was flown. This paper describes the application of ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance

    In-Flight Performance of the Cassini Hemispherical Quartz Resonator Gyro Inertial Reference Units

    Brown, Todd S. | NTRS | 2013
    operating after 16 years of flight and the telemetry from the attitude control hardware on Cassini has produced an immense dataset that allows the ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: reaction control system (RCS) , Space Communications, Spacecraft Communications, Command And Tracking , guidance, navigation, and control (GNC)

    Maneuver Strategy for OSIRIS-REx Proximity Operations

    Wibben, Daniel R. / Williams, Kenneth E. / McAdams, James V. et al. | NTRS | 2017
    study and observe asteroid (101955) Bennu (previously known as 1999 RQ36) and subsequently collect and return a sample from the asteroid to ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration

    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

    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

    Leveraging Resonant Terminator Orbits for the Trajectory Design of OSIRIS-APEX at (99942) Apophis

    Gavin M Brown / Daniel R. Wibben / Peter G. Antreasian et al. | NTRS
    , nominally expected to begin in January2030, has the primary goal of collecting image and spectral data of the full asteroid surface at a wide ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Launch Vehicles and Launch Operations , Spacecraft Design, Testing and Performance

    Methods for Analytic Reflected Radiant Flux Modeling in Observing Space Vehicles

    Kevin R. Kobylka / Derek A. Hutton | NTRS
    . Techniques were developed using a specialized tool developed fromCOTS star identification and attitude determination software to localize ICPS ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Photometric and Radiometric modeling , Spacecraft Instrumentation and Astrionics

    Exploring the Limits of High Altitude GPS for Future Lunar Missions

    Ashman, Benjamin W. / Parker, Joel J. K. / Bauer, Frank H. et al. | NTRS | 2018
    practical limit of high-altitude space usage is not known, and recent missions have demonstrated that signal availability is sufficient for ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration

    OSIRIS-REx Orbit Determination Covariance Studies at Bennu

    Antreasian, P. G. / Moreau, M. / Jackman, C. et al. | NTRS | 2016
    two and a half months prior to closest approach, ultimately delivering the spacecraft to a point 18 km from Bennu in Nov, 2018. An extensive ...
    Verlag: NASA National Aeronautics and Space Administration

    Navigation Architecture for a Space Mobile Network

    Valdez, Jennifer E. / Ashman, Benjamin / Gramling, Cheryl et al. | NTRS | 2016
    The Tracking and Data Relay Satellite System (TDRSS) Augmentation Service for Satellites (TASS) is a proposed beacon service to provide a ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Space Communications, Spacecraft Communications, Command And Tracking

    Methods for Analytic Reflected Light Flux modelling in Observing Human Made Space Vehicles

    Kevin Richard Kobylka / Derek Andrew Hutton | NTRS
    function of range to inform the camera settings used to obtain the images. Postflight analysis was performed with the obtained images and telemetry ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Instrumentation and Astrionics

    GPS Based Autonomous Navigation Study for the Lunar Gateway

    Winternitz, Luke B. / Bamford, William A. / Long, Anne C. et al. | NTRS | 2019
    This paper describes and predicts the performance of a conceptual autonomous GPS-based navigation system for NASA's planned lunar Gateway ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Communications And Radar

    Supporting Crewed Lunar Exploration with LiAISON Navigation

    Leonard, Jason M. / Parker, Jeffrey S. / Anderson, Rodney L. et al. | NTRS | 2013
    This paper examines the benefits of navigating a crewed vehicle between the Earth and the Moon using both ground tracking and satellite-to ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration , Space Communications, Spacecraft Communications, Command And Tracking

    Monthly Variations of Low-Energy Ballistic Transfers to Lunar Halo Orbits

    Parker, Jeffrey S. | NTRS | 2010
    The characteristics of low-energy transfers between the Earth and Moon vary from one month to the next largely due to the Earth's and ...
    Verlag: NASA National Aeronautics and Space Administration

    Investigating Solar Radiation Pressure Modeling for Operations in Near Rectilinear Halo Orbit

    Clark P Newman / Jacob R Hollister / Diane C Davis et al. | NTRS
    , attitude control accuracy, orbit determination performance, and computational burden. ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Lunar And Planetary Science And Exploration , Spacecraft Design, Testing And Performance , Guidance , Control

    Sextant X-Ray Pulsar Navigation Demonstration: Initial On-Orbit Results

    Mitchell, Jason W. / Winternitz, Luke M. / Hassouneh, Munther A. et al. | NTRS | 2018
    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: Spacecraft Design, Testing And Performance , Space Communications, Spacecraft Communications, Command And Tracking

    Implementation of Pin Point Landing Vision Components in an FPGA System

    Morfopolous, Arin / Metz, Brandon / Villalpando, Carlos et al. | NTRS | 2011
    input to the control system to safely choose and navigate to a safe landing site. A proposed algorithm called VISion aided Inertial NAVigation ...
    Verlag: NASA National Aeronautics and Space Administration
    Schlagwörter: aircraft landing guidance , Spacecraft Instrumentation And Astrionics

    Preparing for the Huygens Probe Mission, Cassini orbit determination results for the first and second targeted Titan encounters

    Stauch, Jason R. / Antreasian, Peter / Bordi, John et al. | NTRS | 2005
    Dynamic modeling of the spacecraft and Saturn system, tracking data, including radio-metric and optical navigation data, and measurement ...
    Verlag: NASA National Aeronautics and Space Administration

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