61–80 von 1,442 Ergebnissen
|

    Free-space optical communication systems (FOCUS): a US Army overview

    Vallestero, N.J. / Khusid, M. / Prasad, N.S. et al. | Tema Archiv | 2002
    systems will be based on a survivable, adaptable network capable of integrating commercial services and securely utilizing bandwidth for voice ...

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

    Hochberg, E.B. | Tema Archiv | 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 Archiv | 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 ...

    Status of free-space optical communications and its future applications

    Freidell, J.E. | Tema Archiv | 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 Archiv | 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 Archiv | 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 Archiv | 1994
    performance and attractivness for the deep-space communication mission. Two candidate system architectures based on optical technologies were ...

    Present and future of optical intersatellite communication research at NASDA

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

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

    Lagaye, J.P. / Vinay, L. / Richou, J. | Tema Archiv | 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 ...

    The application and development tendency of optical measurement in automobile industry

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

    Damage detection of satellite structures by optical fiber with small diameter

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

    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 Archiv | 1992
    This paper reports on the development of a hybrid optical/electronic signal processor for laser radar signals in fire control applications ...

    Direct optical sensing of underwater sound fields: naval applications

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

    Multigigabit optical transmission experiment through a free-space simulator

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

    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 Archiv | 1999
    This paper describes recent developments of a practical, low cost embedded plastic optical fiber (POF) wear sensor system for the condition ...

    NASA's geostationary earth observatory and its optical instruments

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

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

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

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

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

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

    Simoneau, J. / Feller, R. / Peatfield, C. et al. | Tema Archiv | 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 ...

    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 Archiv | 1999
    data is digitized at the antennae. An optical harness distributes clocking data to the antennae to synchronize the digitizing of the data, and ...