Laser Radar Echoes from a Stratified Clear Atmosphere

Collis, R. T. H.; Fernald, F. G.; Ligda, Myron G. H.

doi:10.1038/2031274a0

Cited by 37 publications

(14 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With respect to this requirement, the laser radar technique has been applied for remotely probing various properties of the atmosphere [2][3][4][5][6][7][8][9]. These probing methods have so far been based exclusively on detecting elastically scattered light consisting of both Rayleigh scattering by molecules and Mie scattering by particulate matters such as aerosols, dust and water droplets existing in the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Laser-Raman radar ?Laser-Raman scattering methods for remote detection and analysis of atmospheric pollution

Inaba

Kobayasi

1972

Opto-electronics

View full text Add to dashboard Cite

This paper reviews the recent progress of the laser radar method, providing single-ended and range-resolved means for remote detection and analysis of various molecular species in the polluted as well as ordinary atmosphere, based on the existence of their Raman backscattering; simply called the laser-Raman radar method. A brief description is given of the operational principle including the basic concept and fundamental characteristics of this scheme, along with critical discussions of their advantages. The differential backscattering cross section and the spectral distribution of Raman scattering of molecular species present in the atmosphere are discussed and summarized from the practical view-point for providing molecular density evaluation and interference-free detection. After presenting experimental approaches of the laser-Raman scheme to show the feasibility of in-field monitoring and analysis of chemical species in various air conditions, the estimation of molecular concentrations is performed from observed Raman spectra. Analytical discussions on the minimum detectable concentration and the range detectivity are also presented to indicate the present capability and limitation of this laser-Raman technique. The potentiality for further progress in resonance Raman scattering for range-resolved measurement of dispersed pollutants in ambient air is pointed out.

show abstract

Section: Introductionmentioning

confidence: 99%

Laser-Raman radar ?Laser-Raman scattering methods for remote detection and analysis of atmospheric pollution

Inaba

Kobayasi

1972

Opto-electronics

View full text Add to dashboard Cite

show abstract

“…Extensive studies of the atmospheric aerosol load in the troposphere were conducted the last decades using the lidar technique [8][9][10][11] and nowadays the lidar methods are sufficiently mature to provide reliable and quantitative aerosol measurements. Extensive studies of the atmospheric aerosol load in the troposphere were conducted the last decades using the lidar technique [8][9][10][11] and nowadays the lidar methods are sufficiently mature to provide reliable and quantitative aerosol measurements.…”

Section: Introductionmentioning

confidence: 99%

Application of a lidar system to the estimation of the ambient aerosol source

et al. 2002

View full text Add to dashboard Cite

This work presents the aerosol vertical profiles obtained by means of an elastic backscatter ground-based LIDAR, using the 532-nm radiation from a Nd:YAG laser. Simultaneously, the aerosol size distribution in the ambient air was continuously monitored at ground level using an aerosol spectrometer that performs particulate measurements by laser light scattering. Additional information about aerosol index was obtained from TOMS data. The vertical profiles have been useful to relate satellite observations with ground level measurements. In our experiment, deployed on the Iberian Peninsula, an estimation of the provenance of aerosols was made by analyzing the results provided by these instruments, jointly with synoptic meteorological information available.

show abstract

“…The results obtained will be described in the following sections. More recently, they were examined, both theoretically [Procopio, Jessen, Nove, and Brown, 1964;Gardner, 1964;General Electric Co., 1964;Beckmann, 1964;Fried and Cloud, 1964;Hufnagel and Stanley, 1964] and experimentally [Long, 1963;Fiocco and Smullin, 1963;Long and Wortendyke, 1964;De Lange, 1963;Hinchman and Buck, 1964;Munich, 1964;Collis, Fernald, and Ligda, 1964;Lucy, 1964;Grant and Ageno, 1964] and by other authors, in view of the application of laser techniques to the communication field.…”

Section: Introductionmentioning

confidence: 99%

Deterioration of the Coherence Properties of a Laser Beam by Atmospheric Turbulence and Molecular Scattering

Consortini¹,

Ronchi²,

Scheggi³

et al. 1966

Radio Science

View full text Add to dashboard Cite

Turbulence and scattering can be considered as chiefly responsible for the deterioration of coherence properties of laser radiation when propagating through the atmosphere.The effect of atmospheric turbulence as well as the effect of molecular scattering (in a quiet atmosphere) on the space and time coherence, respectively, have been theoretically investigated within the limits of ray theory.As a result we found that there is a limiting diameter for the beam cross section beyond which the advantages of the space coherence are largely offset by the intervention of turbulence. On the other hand, the thermal movements of molecules may affect the time coherence (that is, the monochromaticity) of a highly monochromatic beam.

show abstract

Laser Radar Echoes from a Stratified Clear Atmosphere

Cited by 37 publications

References 1 publication

Laser-Raman radar ?Laser-Raman scattering methods for remote detection and analysis of atmospheric pollution

Laser-Raman radar ?Laser-Raman scattering methods for remote detection and analysis of atmospheric pollution

Application of a lidar system to the estimation of the ambient aerosol source

Deterioration of the Coherence Properties of a Laser Beam by Atmospheric Turbulence and Molecular Scattering

Contact Info

Product

Resources

About