1–20 von 49 Ergebnissen
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    The Event Horizon Explorer Mission Concept

    Peter Kurczynski / Michael D. Johnson / Sheperd S. Doeleman et al. | NTRS | 2022
    studying the immediate environment aroundsupermassive black holes, and focus on critical enabling technologies and engineering challenges. We ...
    Verlag: Society of Photo-optical Instrumentation Engineers

    Lunar calibration and performance assessments of the NOAA-20 VIIRS reflective solar bands

    Amit Angal / Xiaoxiong Xiong / Truman Wilson et al. | NTRS | 2019
    Terra and Aqua spacecrafts. The lunar calibration methodologies developed for the two MODIS instruments were later extended to apply to the ...
    Verlag: Society of Photo-optical Instrumentation Engineers

    The Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII): First Flight

    Rinehart, S. A. / Dhabal, A. / Fixsen, D. et al. | NTRS | 2018
    for an engineering flight. Over the course of the one night flight, BETTII acquired a large amount of technical data that we are using to ...
    Verlag: Society of Photo-optical Instrumentation Engineers

    Nature of and Lessons Learned from Lunar Ice Cube and the First Deep Space Cubesat 'Cluster'

    Clark, Pamela / MacDowall, Robert / Farrell, William et al. | NTRS | 2018
    the presence of surface ice at the lunar poles, utilizing an active source (laser), and looking for absorption features in the returning ...
    Verlag: Society of Photo-optical Instrumentation Engineers (SPIE)

    Visual Advantage of Enhanced Flight Vision System During NextGen Flight Test Evaluation

    Kramer, Lynda J. / Harrison, Stephanie J. / Bailey, Randall E. et al. | NTRS | 2014
    safety for aircrew performance and enable operational improvements for low visibility operations in the terminal area environment. Simulation and ...

    A Noninvasive Miniaturized-Wireless Laser-Doppler Fiber-Optic Sensor for Understanding Distal Fingertip Injuries in Astronauts

    Ansari, Rafat R. / Jones, Jeffrey A. / Pollonini, Luca et al. | NTRS | 2009
    gloves/space suits. The repetitive hand motion is a probable cause for discomfort and injuries to the fingertips. We describe a new wireless ...

    A survey of ground operations tools developed to simulate the pointing of space telescopes and the design for WISE

    Fabinsky, Beth | NTRS | 2006
    WISE, the Wide Field Infrared Survey Explorer, is scheduled for launch in June 2010. The mission operations system for WISE requires a ...

    A high - resolution and high -speed 3D imaging system and its application on ATR

    Lu, Thomas T. / Chao, Tien-Hsin | NTRS | 2006
    The paper presents an advanced 3D imaging system based on a combination of stereo vision and light projection methods. ...

    Performance of the Atmospheric Infrared Sounder (AIRS) in the radiation environment of low-Earth orbit

    Weiler, Margaret H. / Overoye, Kenneth R. / Stobie, James A. et al. | NTRS | 2005

    Standard and Research Products from the AIRS and AMSU-A on the EOS Aqua Spacecraft

    Pagano, Thomas S. / Chahine, Moustafa T. / Aumann, Hartmut H. et al. | NTRS | 2005

    Integrated modeling applied to the Terrestrial Planet Finder mission

    Kissil, Andrew / Kwack, Eug / Ho, Timothy et al. | NTRS | 2005
    This paper addresses design feasibility studies conducted for the TPF-Coronagraph Mission, and the on-going integrated modeling tool ...

    Progress in developing GeoSTAR - Microwave Sounder for GOES-R

    Lambrigtsen, Bjorn H. / Brown, S. T. / Dinardo, S. J. et al. | NTRS | 2005
    The Geostationary Synthetic Thinned Aperture Radiometer (GeoSTAR)is a new concept for a microwave sounder, intended to be deployed at the ...

    Progress in broadband infrared nulling technology for TPF

    Wallace, J. Kent / Brown, Ken / Bartos, Randall et al. | NTRS | 2005
    TPF-I has set for itself a host of challenging technical milestones along its path to demonstrating the feasibility of infrared nulling for ...

    Passive perception system for day/night autonomous off-road navigation

    Rankin, Arturo L. / Bergh, Charles F. / Goldberg, Steven B. et al. | NTRS | 2005
    This paper discusses the Team Raptor passive perception system hardware and software design, implementation, and performance, and describes ...

    Stray Light Lessons Learned from the Mars Reconnaissance Orbiter's Optical Navigation Camera

    Lowman, Andrew / Stauder, John L. | NTRS | 2004
    The Optical Navigation Camera (ONC) is a technical demonstration slated to fly on NASA"s Mars Reconnaissance Orbiter in 2005. Conventional ...
    Verlag: International Society for Optical Engineering (SPIE)

    Subsurface ice and brine sampling using an ultrasonic/sonic gopher for life detection and characterization in the McMurdo Dry Valleys

    Bar-Cohen, Y. / Sherrit, S. / Chang, Z. et al. | NTRS | 2004
    There is growing evidence for ice and fluids near the surface of Mars with potential discharge of brines, which may preserve a record of ...

    The Spitzer science operations system : how well are we really doing?

    Dodd, Suzanne R. | NTRS | 2004
    This paper will describe how the SIRTF Science Operation System has performed since launch, and how the system has been adapted based upon ...

    Design and analysis of ultrasonic horn for USDC (Ultrasonic/Sonic Driller/Corer)

    Chang, Zensheu / Sherrit, Stewart / Bao, Xiaoqi et al. | NTRS | 2004
    the need for large axial forces, holding torques, and high power consumption. ...

    Resonance analysis of high temperature piezoelectric materials for actuation and sensing

    Sherrit, Stewart / Bao, Xiaoqi / Bar-Cohen, Yoseph et al. | NTRS | 2004
    The current NASA Decadal mission planning effort has identified Venus as a significant scientific target for a surface in-situ sampling ...

    Spitzer Space Telescope : observatory desciption and performance

    Patel, Keyur C. / Spath, Stuart R. | NTRS | 2004
    , was successfully launched on August 25, 2003 from Kennedy Space Center. The engineering systems for Spitzer were developed by the Jet ...