Atmospheric Transmission Of Laser Radiation
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Atmospheric Transmission Of Laser Radiation
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Author : R. A. McClatchey
language : en
Publisher:
Release Date : 1978
Atmospheric Transmission Of Laser Radiation written by R. A. McClatchey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with LASER (Computer file) categories.
Atmospheric Transmission Of Laser Radiation Computer Code Laser
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Author :
language : en
Publisher:
Release Date : 1978
Atmospheric Transmission Of Laser Radiation Computer Code Laser written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
A computer code called LASER has been developed and documented and will be made available to interested users. LASER is a version of HITRAN which computes the monochromatic extinction coefficients for both molecular and particulate components of the atmosphere and provides results for a series of atmospheric models from sea level to 100 km in altitude. A detailed description of the calculations leading to these extinction coefficient charts is provided, and charts are provided for a number of specific laser frequencies in order to bring up to date previously published results. In addition, high spectral resolution atmospheric transmission spectra have been provided covering the regions of CO2, CO, and DF laser emission. These plotted spectra represent an up-to-date version of previously published material.
Atmospheric Transmission Of Co2 Laser Radiation With Application To Laser Doppler Systems
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Author : S. S. R. Murty
language : en
Publisher:
Release Date : 1975
Atmospheric Transmission Of Co2 Laser Radiation With Application To Laser Doppler Systems written by S. S. R. Murty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Carbon dioxide lasers categories.
The molecular absorption coefficients of carbon dioxide, water vapor, and nitrous oxide are calculated at the P16, P20, P22, and P24 lines of the CO2 laser for temperatures from 200 to 300 K and for pressures from 100 to 1100 mb. The temperature variation of the continuum absorption coefficient of water vapor is taken into account semi-empirically from Burch's data. The total absorption coefficient from the present calculations falls within +/- 20 percent of the results of McClatchey and Selby. The transmission loss which the MSFC CO2 pulsed laser Doppler system experiences has been calculated for the January 1973 flight-test conditions for the five P-lines. The total transmission loss is approximately 7 percent higher at the P16 line and 10 percent lower at the P24 line compared to the P20 line. Comparison of the CO2 laser with HF and DF laser transmission reveals the P2(8) line at 3.8 [mu]m of the DF laser is much better from the transmission point of view for altitudes below 10 km.
A Literature Survey On The Atmospheric Effects On The Propagation Of 1 06 Micron Laser Radiation
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Author : Eddie L. Roy
language : en
Publisher:
Release Date : 1965
A Literature Survey On The Atmospheric Effects On The Propagation Of 1 06 Micron Laser Radiation written by Eddie L. Roy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Lasers categories.
Atmospheric Propagation Of Injection Laser Radiation For High Data Rate Transmission
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Author : Ernst J. Schiel
language : en
Publisher:
Release Date : 1968
Atmospheric Propagation Of Injection Laser Radiation For High Data Rate Transmission written by Ernst J. Schiel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
The emphasis in this program was the development of a high data rate system for use in transmission through the atmosphere. This system was designed to have a large signal-to-noise ratio for distances up to 20 km and can, therefore, tolerate large insertion losses due to unfavorable weather conditions. This system has a maximum capacity of 10 megabits/sec and either PFM, PPM, or PCM can be used. With presently available military PCM equipment, simultaneous transmission of 196 audio channels is feasible. Specifically presented in this paper are: the design and construction of the transmitter and receiver, signal-to-noise considerations, and operational characteristics of the system. An experimental injection laser communication link was set up over a 13 km range. The transmitter was located at Fort Monmouth, N.J. The path of the laser beam traversed various terrain including a wide river, parking lots, woods and suburban areas. The average height of the laser beam above the ground was approximately 25 meters and its path across the water was approximately 1 km. (Author).
Atmospheric Transmission Of 1 06 Micron Laser Radiation Application To Standoff Missile Performance
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Author :
language : en
Publisher:
Release Date : 1974
Atmospheric Transmission Of 1 06 Micron Laser Radiation Application To Standoff Missile Performance written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
A model for the prediction of maximum target lock-on range for a 1.06 micron laser target designator weapon system where atmospheric attenuation of the laser radiation is the limiting system factor is derived. The laser range equation is based on the assumption of specific designator/receiver design characteristics, the assumption that the target is a Lambert surface, and the assumption of the validity of the Beer-Lambert Law for describing atmospheric propagation of laser radiation.
Laser Beam Propagation In The Atmosphere
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Author : Hugo Weichel
language : en
Publisher: SPIE Press
Release Date : 1990
Laser Beam Propagation In The Atmosphere written by Hugo Weichel and has been published by SPIE Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Science categories.
Atmospheric Transmission Of 1 06 Micron Laser Radiation
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Author : Charles Henry Coolidge (CAPT, USAF., Jr)
language : en
Publisher:
Release Date : 1974
Atmospheric Transmission Of 1 06 Micron Laser Radiation written by Charles Henry Coolidge (CAPT, USAF., Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Infrared detectors categories.
Atmospheric Transmittance 7 30 Micrometers
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Author : R. A. McClatchey
language : en
Publisher:
Release Date : 1972
Atmospheric Transmittance 7 30 Micrometers written by R. A. McClatchey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Atmospheric radiation categories.
High resolution transmittance curves are presented for the spectral region 320-1400 wave numbers. These spectra are useful as a guide for selecting laser wavelengths for atmospheric propagation studies in this spectral region. In addition, this report provides specific information concerning the attenuation coefficients of 41 CO2 rotational laser lines in the 10.4 micrometer band system (v3 to v1). Charts for predicting the atmospheric attenuation of the CO2 laser lines are provided for each of five climatological model atmospheres and two haze models. The current report extends the work presented in two earlier reports on (1) CO laser attenuation in the 1400-2120/cm−1 (4.72-7. 14 micrometers) region: AFCRL-71-0370 and (2) HF and DF laser attenuation in the 2120-3740/cm (2.67-4.72 micrometers) region: AFCRL-72-0312. This report, when combined with the two previous reports described above, provides synthetic spectra for the entire region from 2.67-31.25 micrometers.
Atmospheric Attenuation Of Co Laser Radiation
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Author : R. A. McClatchey
language : en
Publisher:
Release Date : 1971
Atmospheric Attenuation Of Co Laser Radiation written by R. A. McClatchey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Absorption spectra categories.
With the development of the CO laser having emission lines in the range from 1200/cm to greater than 2000/cm, it is of importance to establish which of the more than 200 lines can be transmitted through a variety of atmospheric paths. The spectral region of CO emission spans a very important water vapor absorption band and, in addition, there is absorption by CO2, O3, N2O and CH4. Absorption lines associated with all of these molecules were included in the calculation of synthetic spectra covering the region of CO emission. After limiting the number of CO emission lines to be considered in detail according to a criterion based on atmospheric attenuation, a series of tables was constructed providing quantitative attenuation information for each of 88 laser lines and for 10 different atmospheric models. Data based on two different aerosol scattering models are included in these tables. (Author).