101–120 von 18,905 Ergebnissen
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    Analysis and testing of a soft actuation system for segmented refletor articulation and isolation

    Jandura, L. / Agronin, M.L. | Tema Archiv | 1991
    Segmented reflectors have been proposed for space-based applications such as optical communication and large-diameter telescopes. An ...

    Intelligent, variable resolution laser scanner for the space vision system

    Blais, F. / Rioux, M. / Maclean, S.G. | Tema Archiv | 1991
    processing and an optical interference filter. Very fast tracking of the object is implemented using Lissajous type scanning figures. ...

    Characteristics of a dynamic holographic sensor for shape control of a large reflector

    Welch, S.S. / Cox, D.E. | Tema Archiv | 1991
    In this paper a conceptual design is presented for a dynamic distributed holographic sensor for measuring the surface distortion of large ...

    Discrete piezoelectric sensors and actuators for active control of two-dimensional spacecraft components

    Bayer, J.I. / Varadan, V.V. / Varadan, V.K. | Tema Archiv | 1991
    This paper describes research into the use of discrete piezoelectric sensors and actuators for active modal control of flexible two ...

    A fluorescence-based fiber optic temperature sensor for aerospace applications

    Tilstra, S.D. | Tema Archiv | 1991
    an optical temperature sensor designed for aircraft and engine environments based on the fluorescent time rate of decay (TRD) principle. The ...

    Ka-band MMIC array feed development for deep space applications

    Cooley, T.W. / Riley, A.L. / Crist, R. et al. | Tema Archiv | 1991
    Ka-band MMIC transmitter arrays are under development at NASA Jet Propulsion Laboratory for future deep space and ground communications ...

    Lightweight surveillance FLIR

    Fawcett, J. | Tema Archiv | 1991
    The following describes a lightweight infrared system that is ideal for mounting on light aircraft for surveillance purposes. Use of a ...

    A fiber-coupled heterodyne interferometric displacement sensor

    Nerheim, N. | Tema Archiv | 1991
    Space-based interferometers and large segmented reflectors will require precision metrology with nanometer accuracy for active control ...

    Experiments in real-time visual control

    Griswold, N.C. / Kehtarnavaz, N. | Tema Archiv | 1991
    processors. For intelligent vehicle systems the goal-directed autonomy includes convoy following, road following and obstacle avoidance. The first ...

    The impact of tactical maneuvers on E-O sensor imagery

    Hanson, D.S. | Tema Archiv | 1991
    Visible light Electro-Optical (E-O) sensors offer some impressive advantages compared to film. They are especially well suited for Long ...

    Application of laser radar to autonomous spacecraft landing

    Gleichman, K. / Tchoryk, P. jun. / Sampson, R.E. | Tema Archiv | 1991
    required for the Mars Rover Sample Return (MRSR) mission. An application of laser radar for performing Autonomous Hazard Detection and Avoidance ...

    Holographic center high mounted stoplight

    Smith, R.T. | Tema Archiv | 1991

    Automated dimensional inspection of cars in crash tests with digital photogrammetry

    Beyer, H.A. | Tema Archiv | 1991
    prepared for a crash test was performed under practical conditions. It was shown that an accuracy of 1mm in each coordinate axis within a ...

    Airborne imaging system peformance model

    Redus, W.D. | Tema Archiv | 1991

    High spatial resolution FLIR

    Tucker, C.J. / Mitchell, R.J. | Tema Archiv | 1991
    Bandwidth (HSB) FLIR provides improved horizontal resolution, a non-interlaced digital output suitable for interfacing to digital image processing ...

    Line of sight alignment of multi-sensor system

    Shalom Wilk / Goldmunz, M. / Shahaf, N. et al. | Tema Archiv | 1991
    A fully automatic in-flight boresight unit for line of sight (LOS) alignment between a FLIR operating in the thermal infrared region (8-12 ...

    Finite element analysis of deformation in large optics due to space environment radiation

    Merzbacher, C.I. / Friebele, E.J. / Ruller, J.A. et al. | Tema Archiv | 1991
    Dose gradients in large mirror substrates due to unequal exposure to the natural space radiation environment have been calculated for two ...

    A high resolution airborne multisensor system

    Prutzer, S. / Biron, D.G. / Quist, T.M. | Tema Archiv | 1991
    the data characteristics, including realistic phenomenology, and the delivery of co-registered, multi-dimensional sensor data for the ...

    Design and development of the zeolite crystal growth (ZCG) facility

    Fiske, M.R. | Tema Archiv | 1991
    large crystals. To this end, the Battelle Advanced Maeterials Center for the Commercial Development of Space (CCDS) is funding the development ...

    Development and test of the starlab control system

    LaMont, D. / Lin Mar / Rodden, J. | Tema Archiv | 1991
    developed. The test includes verification of optical tracking, including space object imagery and the beam control mirror servos. Flight computer ...