1–20 of 274 hits
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    Wavelets for ultrasonic echo identification in aircraft fuel tanks

    Sadok, M. | Tema Archive | 2002
    to gauge fuel in commercial and military aircraft. Ultrasonics are among other techniques that were tested for such purposes. Generally, in ...

    Vibration control of a flexible beam through a smart structure concept

    Goud, A.P. / Umapathy, M. | Tema Archive | 1998
    Active control has become important in structural systems as an efficient tool for vibration suppression. A cantilever beam has been chosen ...

    Vehicle size and orientation estimation using geometric fitting

    Carlsson, C. / Millnert, M. | Tema Archive | 2001
    Over the years imaging laser radar systems have been developed for military and civilian applications. Among the applications we note ...

    Using physical models to improve thermal IR detection of buried mines

    Chen, D.H. / Sendur, I.K. / Liao, W.J. et al. | Tema Archive | 2001
    to better detection. Several techniques for exploiting this information are described. The first approach involves ML estimation of model ...

    Using 0.8 mu m DMILL technology to realize an encoder/decoder for optical transmission at 550 Mbps

    Claus, H. / Cabuy, F. / Roef, P. | Tema Archive | 1999
    data is digitized at the antennae. An optical harness distributes clocking data to the antennae to synchronize the digitizing of the data, and ...

    Use of high-frequency seismic waves for the detection of buried land mines

    Scroot, W.R. jun. / Lee, S.H. / Larson, G.D. et al. | Tema Archive | 2001
    with a non-surface-contacting, radar-based displacement sensor for the detection of buried landmines. Initial work on this system investigated ...

    Urban gunshot and sniper location: technologies and demonstration results

    Lewis, G. / Shaw, S. / Crowe, M. et al. | Tema Archive | 2002
    -optic sensors. To date, no one sensor technology has proven totally effective for a complete solution. PSI has a muzzle blast detection and ...

    Unattended ground sensor based on fiber Bragg grating technology

    Zhang, Yan / Li, Sanguo / Yin, Zhifan et al. | Tema Archive | 2005
    In this paper we have demonstrated an unattended seismic wave sensor based on the optical fiber Bragg grating (FBG) sensing technology. The ...

    Toward dynamic model-based prognostics for transmission gears

    Wang, Wenyi | Tema Archive | 2002
    This paper presents a novel methodology for the diagnosis and prognosis of crucial gear faults, such as gear tooth fatigue cracking ...

    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 ...

    Time-domain metal detector and GPR data processing and fusion for landmine detection

    Gao, Ping / Collins, L.M. | Tema Archive | 2000
    For the landmine detection problem, a detector that provides a high probability of detection and a low probability of false alarm is needed ...

    Thruster-plume-induced contamination measurements from the PIC and SPIFEX flight experiments

    Soares, C.E. / Barsamian, H. / Rauer, S. | Tema Archive | 2002
    developed for the International Space Station (ISS). ...

    Three-dimensional anthropometric techniques applied to the fabrication of burn masks and the quantification of wound healing

    Whitestone, J.J. / Geisen, G.R. / McQuiston, B.K. | Tema Archive | 1997
    for successful mission performance of weapon systems, including cockpits, protective equipment, and clothing. The application of human body ...

    The steady state response calculation and damping vibration analysis of shrouded blades

    Ren, Yungsheng / Zhu, Demao | Tema Archive | 1994
    . The related computer programs are written in fortran 77. The numeric analysis for the blades is completed. ...

    The SOFIA aircraft and its modification

    Kunz, N. | Tema Archive | 2003
    SOFIA Telescope. For completeness, this paper also provides a brief overview of the SOFIA project including the joint project arrangement ...

    Thermal and mechanical performance of a carbon-carbon composite spacecraft radiator

    Kuhn, J.L. / Benner, S.M. / Butler, C.D. et al. | Tema Archive | 1999
    weight. However, the high cost and long lead-time for carbon-carbon manufacture have limited their widespread usage. Consequently, an informal ...

    Theoretical study of microwave radiometry for buried object detection

    Johnson, J.T. | Tema Archive | 2000
    An analytical study of environmental and clutter effects on microwave radiometers used for the detection of buried objects is presented. To ...

    The airborne chemical imaging system (ACIS)

    D'Amico, F.M. / Emge, D.K. / Marinelli, W.J. et al. | Tema Archive | 2003
    The airborne chemical imaging system (ACIS) is a research platform used to evaluate passive infrared (IR) standoff detectors for airborne ...

    Terminal phase visual position estimation for a tail-sitting vertical takeoff and landing UAV via a Kalman filter

    Tsai, A.C. / Gibbens, P.W. / Stone, R.H. | Tema Archive | 2007
    Computer vision has been an active field of research for many decades; it has also become widely used for airborne applications in the last ...