61–80 of 1,442 hits
|

    Optical figure testing of prototype mirrors for JPL's precision segmented reflector (PSR) program

    Hochberg, E.B. | Tema Archive | 1991
    shifting interferometer operating at 10.59 microns and laser metrology for measurement of piston and absolute radius of curvature. The optical ...

    Bistatic radar imaging of landmines by optical electric field sensor

    Sato, M. / Tanaka, R. / Yoshida, K. | Tema Archive | 2004
    We are developing a novel GPR system for stand off landmine detection. This is a bistatic GPR system, which uses a TEM horn antenna for a ...

    Ground Standoff Mine Detection System (GSTAMIDS) engineering, manufacturing and development (EMD) block 0

    Pressley, J.R.R. / Pabst, D. / Sower, G. et al. | Tema Archive | 2001
    for Block 0 is the South African Meerkat that has overpass capability for anti-tank mines, as well as armor anti-mine blast protection and ...

    Status of free-space optical communications and its future applications

    Freidell, J.E. | Tema Archive | 1994
    Free-Space optical communications has been a subject of research interest nearly since the advent of the laser. Space applications have ...

    Semiconductor active waveguide reconfigurable optical interconnect devices and networks

    Balestra, C.L. / Alkinson, T.L. / Johnson, B.C. et al. | Tema Archive | 1993
    and multi-device level to configure a high transmission bandwidth space division switch. For space and aircraft systems, where weight and ...

    Strain measurement using a Brillouin optical time domain reflectometer for development of aircraft structure health monitoring system

    Shimizu, T. / Yari, T. / Nagai, K. et al. | Tema Archive | 2001
    We conducted theoretical and experimental approaches for applying Brillouin optical time domain reflectometer (BOTDR) to aircraft and ...

    Comparison of radio frequency and optical architectures for deep-space communications via a relay satellite

    Mecherle, G.S. / Horstein, M. | Tema Archive | 1994
    performance and attractivness for the deep-space communication mission. Two candidate system architectures based on optical technologies were ...

    The application and development tendency of optical measurement in automobile industry

    Gang Wan | Tema Archive | 2002
    the development process. With any changes in design, the impact for a possible collision needs to be examined. An optical measurement system ...

    Improvement of LIDAR system by modulation of an optical pulse laser for underwater detection

    Lagaye, J.P. / Vinay, L. / Richou, J. | Tema Archive | 1997
    clutter by modulating an optical pulse laser. We propose a theoretical study of the behaviour of a modulated pulse in the underwater medium. We ...

    Present and future of optical intersatellite communication research at NASDA

    Araki, T. / Nakamori, S. / Hisada, Y. et al. | Tema Archive | 1994
    research. Second, results of the Optical Inter-orbit Communications Engineering test Satellite (OICETS) feasibility study are reported. Last, they ...

    Damage detection of satellite structures by optical fiber with small diameter

    Kabashima, S. / Ozaki, T. / Takeda, N. | Tema Archive | 2000
    monitoring system usually utilizes optical fiber sensor of which the diameter is 125 micrometer. However, such fiber sensors tend to be perceived as ...

    Direct optical sensing of underwater sound fields: naval applications

    Podlesak, M. | Tema Archive | 1999
    Control of underwater noise radiated by naval vessels relies on two factors. First, ship design for quiet operation, and second, provision ...

    Hybrid optical/electronic signal processor for laser radars signals in fire control systems

    Findley, G.B. jun. / Anderson, C.S. / Townley, S.K. et al. | Tema Archive | 1992
    This paper reports on the development of a hybrid optical/electronic signal processor for laser radar signals in fire control applications ...

    NASA's geostationary earth observatory and its optical instruments

    Koczor, R.J. | Tema Archive | 1991
    of his home planet. One platform is the Geostationary Earth Observatory, which will contain several optical instruments for remote sensing of ...

    Recent developments in the use of plastic optical fiber for an embedded wear sensor (for marine propulsion shafting)

    Cohen, E.I. / Mastro, S.A. / Nemarich, C.P. et al. | Tema Archive | 1999
    This paper describes recent developments of a practical, low cost embedded plastic optical fiber (POF) wear sensor system for the condition ...

    Interaction of micro-organisms (fungi and bacteria) with optical and electronic materials

    Kukhtarev, N.V. / Kukhtareva, T.V. / Jones, J. et al. | Tema Archive | 2002
    for unattended and space-based optical and electronic systems. We have investigated the process of growth and distribution of fungal elements ...

    Multigigabit optical transmission experiment through a free-space simulator

    Miyazaki, T. / Inagaki, K. / Fujise, M. | Tema Archive | 1994
    A transmission experiment through a free-space laser transmission simulator for an optical intersatellite link is proposed and demonstrated ...

    Image transmission in mid-IR using a solid state laser pumped optical parametric oscillator

    Prasad, N.S. / Kratovil, P. / Magee, J.R. | Tema Archive | 2002
    We present image transmission using a mid-wave IR (MWIR) optical transceiver based free-space data link under low visibility conditions ...

    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 ...

    New technique using CO2 laser for high heating and simultaneous optical characterization of IR windows

    Simoneau, J. / Feller, R. / Peatfield, C. et al. | Tema Archive | 1997
    magnitude and distribution of the heat on the window. Therefore, for each missile application, it is critical to be able to determine the optical ...