Results 151 to 160 of about 897 (203)
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Lidar differential absorption and scattering technique: theory
Applied Optics, 1983The results of theoretical investigations of the differential absorption technique for sounding atmospheric water vapor are described in this paper. The sources of errors and their effect on the results of interpreting the sounding data are analyzed. The mathematical problems for inverting the lidar returns are considered.
V E Zuev, Yu S Makushkin, V V Zuev
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Ozone differential absorption lidar algorithm intercomparison
Applied Optics, 1999An intercomparison of ozone differential absorption lidar algorithms was performed in 1996 within the framework of the Network for the Detection of Stratospheric Changes (NDSC) lidar working group. The objective of this research was mainly to test the differentiating techniques used by the various lidar teams involved in the NDSC for the calculation of
Peter Von Der Gathen +2 more
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Continuous‐wave differential absorption lidar
Laser and Photonics Reviews, 2015AbstractThis work proves the feasibility of a novel concept of differential absorption lidar based on the Scheimpflug principle. The range‐resolved atmospheric backscattering signal of a laser beam is retrieved by employing a tilted linear sensor with a Newtonian telescope, satisfying the Scheimpflug condition.
Mikkel Brydegaard, Liang Mei
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Remote sensing of NO using a differential absorption lidar
Applied Optics, 1980Single-ended remote sensing measurements of atmospheric NO have been made using differential absorption of frequency-doubled pulsed CO(2) laser radiation backscattered from topographic targets. Returns were obtained from targets at ranges out to 1.4 km, and significant NO concentrations above ambient were observed over a path which crossed a traffic ...
N Menyuk, D K Killinger
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Differential absorption lidar sensing of ozone
Proceedings of the IEEE, 1989The differential absorption lidar (DIAL) technique for deriving O/sub 3/ profiles from lidar measurements is discussed. The US National Aeronautics and Space Administration's airborne DIAL system is described, and examples of a broad range of O/sub 3/ and aerosol measurements are presented from a number of field experiments.
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Analysis of differential absorption lidar from the Space Shuttle
Applied Optics, 1978A parametric analysis of the Shuttle-borne differential absorption lidar concept for the measurement of atmospheric trace constituent profiles in the nadir viewing mode is presented. The criterion of an optimum constituent optical depth is developed and applied to generate estimates of range resolved measurement errors.
Ellis Remsberg, Larry L Gordley
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Detection and discrimination using multiple-wavelength differential absorption lidar
Applied Optics, 1985A methodology is presented for generalizing two-wavelength single-material differential absorption lidar to multiple wavelengths for use in simultaneous multimaterial detection and discrimination. A key role in the analysis is played by the concentration path length (CL) product covariance matrix ΛĈL, which generalizes the CL variance.
Russell E Warren, R E Warren
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Differential absorption lidar signal averaging
Applied Optics, 1988This paper presents experimental results using an atmospheric backscatter dual CO(2) laser differential absorption lidar (DIAL). It is shown that DIAL signals can be averaged to obtain an N(-(1/2)) dependence decrease in the standard deviation of the ratio of backscattered returns from two lasers, where N is the number of DIAL signals averaged, and ...
W B, Grant, A M, Brothers, J R, Bogan
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Water Vapor Differential Absorption Lidar
2021Water vapor is one of the fundamental thermodynamic variables that define the state of the atmosphere. It is highly variable in space and time and influences many important processes related to weather and climate. For more than two decades the importance of water vapor profiling has been underscored by the research and operational weather communities.
Scott M. Spuler +2 more
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Coherent differential absorption lidar measurements of CO_2
Applied Optics, 2004A differential absorption lidar has been built to measure CO2 concentration in the atmosphere. The transmitter is a pulsed single-frequency Ho:Tm:YLF laser at a 2.05-microm wavelength. A coherent heterodyne receiver was used to achieve sensitive detection, with the additional capability for wind profiling by a Doppler technique.
Grady J, Koch +10 more
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