101–120 of 476 hits
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    Time-frequency signatures based on a fuzzy-cluster representation as a means for automatic classification of targets buried underground

    Strifors, H.C. / Abrahamson, S. / Gustafsson, A. et al. | Tema Archive | 1998
    features in the 2D time-frequency domain are viewed as the target signatures. For target identification, a signature representation should display ...

    Autonomous search for mines. II. Hierarchical search using sensory data

    Cao, Yonghuan / Gelenbe, E. | Tema Archive | 1998

    NDE applications in an anchor bolt and sign bridge inspection program

    Fish, P.E. | Tema Archive | 1998
    Publisher: SPIE International Society for Optical Engineering , Bellingham

    Information processing for aerospace structural health monitoring

    Lichtenwalner, P.F. / White, E.V. / Baumann, E.W. | Tema Archive | 1998
    monitoring (SHM) system. These include artificial intelligence techniques such as neural networks, expert systems, and fuzzy logic for nonlinear ...

    Feature extractor and search engine for automatic object recognition

    Freire, J. / Correia, B. | Tema Archive | 1998

    Coil springs with constrained layer viscoelastic damping for passive isolation (of LIGO detectors)

    Ponslet, E.R. / Miller, W.O. | Tema Archive | 1998
    attenuation (-160 dB/decade above 15 Hz) of floor vibrations for ultra-sensitive (better than 10-18 m/ square root Hz noise floor between ...

    Integration of piezoceramic actuators in fiber-reinforced structures for aerospace applications

    Durr, J. / Herold-Schmidt, U. / Zaglauer, H.W. et al. | Tema Archive | 1998
    Up to now experimental and theoretical research on active structures for aerospace applications has put the focus mainly on surface bonded ...

    CH-46 Sea Knight flight test results for the Rotor Acoustic Monitoring System (RAMS)

    Malver, F. / Schoess, J. / Kooyman, J. et al. | Tema Archive | 1998
    showed that rotor head acoustic monitoring could be uniquely valuable not only for rotor crack and fault detection but also for monitoring the ...

    More applications of uncooled microbolometer sensors

    Breen, T. / Butler, N.R. / Kohin, M. et al. | Tema Archive | 1998
    Lockheed Martin IR Imaging Systems is developing low cost, high performance, uncooled infrared imaging products for both military and ...

    Spatio-temporal wavelets and tracking in noisy environments

    Mujica, F. / Murenzi, R. / Smith, M.J.T. | Tema Archive | 1998
    assumed to be obtained from an optical sensor mounted on the interceptor missile, where the goal of the interceptor is to neutralize the target ...

    Dynamic high-g loading of MEMS sensors: ground and flight testing

    Brown, T.G. / Davis, B.S. | Tema Archive | 1998
    were evaluated through ground and flight tests for their insertion potential into military applications. High-g shock test results suggest that ...

    Molecularly oriented polymeric thin films for space applications

    Fay, C.C. / Stoakley, D.M. / St. Clair, A.K. | Tema Archive | 1998
    the earth has focused attention on organic polymeric materials for a variety of applications in space. Some polymeric materials have exhibited ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Optimization of the Hubble Space Telescope fine guidance sensor target-acquisition parameters

    Abramowicz-Reed, L. / Ftaclas, C. / Chisholm, K.P. | Tema Archive | 1998
    Monte Carlo simulator used in deriving the optimized values for the FGS acquisition and discusses methods for testing the new parameters prior ...

    A skewed approach to filtering

    Julier, S.J. | Tema Archive | 1998
    The dynamics of many physical system are nonlinear and nonsymmetric. The motion of a missile, for example, is strongly determined by ...

    Evaluation and selection of replacement thermal control materials for the Hubble Space Telescope

    Townsend, J.A. / Hansen, P.A. / McClendon, M.W. et al. | Tema Archive | 1998
    The mechanical and optical properties of the metallized Teflon FEP thermal control materials on the Hubble Space Telescope (HST) have ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Role of the atmosphere in target acquisition: models versus experiment

    Kopeika, N.S. / Melamed, R. / Yitzhaky, Y. | Tema Archive | 1998
    for ranges on the order of a kilometer or more, target acquisition is limited by atmospheric blur rather than by hardware. A significant ...

    Accelerated convergence of neural network system identification algorithms via principal component analysis

    Hyland, D.C. / Davis, L.D. / Denoyer, K. | Tema Archive | 1998
    While significant theoretical and experimental progress has been made in the development of neural network-based systems for the autonomous ...

    Sensor-fused navigation and manipulation from a planetary rover

    Baumgartner, E.T. / Leger, P.C. / Schenker, P.S. et al. | Tema Archive | 1998
    Describes the development of advanced rover navigation and manipulation techniques for use by NASA's Sample Return Rover. These techniques ...

    Electrically conductive, low solar absorption, atomic oxygen resistant films for spacecraft thermal and charge control

    Lennhoff, J. / Guiles, M. / Harris, G. et al. | Tema Archive | 1998
    There is a significant requirement for an electrically conductive thermal control film for the dissipation of spacecraft charging. The ...
    Publisher: Society for the Advancement of Material and Process Engineering (SAMPE) , Covina

    Applications of uncooled microbolometer sensors

    Breen, T. / Butler, N. / Kohin, M. et al. | Tema Archive | 1998
    Lockheed Martin IR Imaging Systems is developing low cost, high performance, uncooled infrared imaging products for both military and ...