Results 201 to 210 of about 52,203 (247)
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Compact airborne aerosol lidar system
2005 Quantum Electronics and Laser Science Conference, 2005A compact 532 nm and 1064 nm aerosol lidar has been deployed for small aircraft and ground based atmospheric measurements. Analog and photon counting detection are used to provide high resolution 3-D profiles over the Atlantic Ocean.
A.D. Holmes, R.J. De Young, K. Severance
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Airborne Lidar Measurements Of Aerosols
SPIE Proceedings, 1988The airborne lidar system of the Aerosol Research Branch, NASA Langley Research Center, has been used since 1978 to study the behavior of the stratospheric aerosol on a global scale. The system, in its current configuration, can operate at a wavelength of either 0.6943 pm (ruby laser) or 0.530 μm (frequency doubled Nd:YAG laser).
M P. McCormick, G S. Kent
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Airborne Differential Absorption Lidar
SPIE Proceedings, 1988Airborne differential absorption lidarPeter RichterTechnical University Budapest, Department of Atomic Physics1521 Budapest, Budafoki ut 8. HungaryABSTRACTThe optical setup of an airborne differential absorption lidar based on optical heterody-ne detection of topographic backscattering of CW tunable CO2 lasers will be shown.
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Airborne lidar for environmental measurements
LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings, 2002Now being tested is an airborne IR differential absorption lidar (DIAL) system operating in the 3- to 5-/spl mu/m wavelength region. The system employs two Nd:YAG lasers each pumping a KTiOAsO/sub 4/ (KTA) optical parametric oscillator. The system will be used to measure methane column-content concentrations over regional areas.
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Airborne lidar for fisheries applications
Optical Engineering, 2001An airborne lidar using commercial, off-the-shelf components was developed by the National Oceanic and Atmospheric Administration for fisheries' surveys. We make several test flights of the system and develop several signal processing techniques to discriminate between the returns from fish and from small particles in the water. We use these techniques
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Airborne lidar wind detection at 2 µm*
Coherent Laser Radar, 1995Wind shear, the sudden and violent change of wind direction near the ground has been a contributing factor in at least 28 aviation accidents and incidents involving commercial aircraft since 1964, including more than 600 fatalities. The hazard due to wind shear on a flying aircraft is characterized by the F-factor hazard index.1 As part of the NASA/FAA
Russell Targ +4 more
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Airborne Lidar Results During RACE
Optical Remote Sensing of the Atmosphere, 1997There is an increasing effort towards understanding the role of anthropogenic aerosols regarding their radiative influence on global climate in terms of both the direct and indirect effect (Charlson et al. (1992), Penner et al. (1994). The Radiation, Aerosols and Cloud Experiment consisted of a four week intensive study based in Nova Scotia, Canada ...
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Next-generation NASA airborne oceanographic lidar system
Applied Optics, 2001The complete design and flight test of the next-generation Airborne Oceanographic Lidar (AOL-3) is detailed. The application of new technology has allowed major reductions in weight, volume, and power requirements compared with the earlier AOL sensor. Subsystem designs for the new AOL sensor include new technology in fiber optics, spectrometer detector
C W, Wright +4 more
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Cloud top remote sensing by airborne lidar
Applied Optics, 1982Observations of cloud top height, backscattering, and signal depolarization have been obtained by a lidar system operating onboard a high-altitude research aircraft. The transmitter for the cloud lidar system is a doubled Nd:YAG laser operating at 5 Hz.
J D, Spinhirne +2 more
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Coherent lidar airborne windshear sensor: performance evaluation
Applied Optics, 1991National attention has focused on the critical problem of detecting and avoiding windshear since the crash on 2 Aug. 1985 of a Lockheed L-1011 at Dallas/Fort Worth International Airport. As part of the NASA/FAA National Integrated Windshear Program, we have defined a measurable windshear hazard index that can be remotely sensed from an aircraft, to ...
R, Targ +3 more
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