Calculation of optimal parameters of an NH3-CO2lidar
| Autor: | B I Vasil'ev, Oussama Mannoun |
|---|---|
| Přispěvatelé: | University of Groningen |
| Rok vydání: | 2005 |
| Předmět: |
DIFFERENTIAL-ABSORPTION LIDAR
Materials science differential absorption Absorption spectroscopy GASES Spectral line law.invention Signal-to-noise ratio Optics CO2-LASER NH3-CO2 lidar law Electrical and Electronic Engineering Radar Remote sensing Freons RANGE business.industry Statistical and Nonlinear Physics Laser REMOTE MEASUREMENT Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Wavelength Lidar Measuring instrument LASER 2-FREQUENCY LIDAR business SYSTEM |
| Zdroj: | Quantum Electronics, 35(6), 563-568 |
| ISSN: | 1468-4799 1063-7818 |
| Popis: | The basic parameters (range, signal-to-noise ratio, and sensitivity) of a lidar using NH3 and CO2 lasers are calculated. The principle of lidar operation is based on the differential absorption recording. Absorption spectra of all known Freons are considered in the spectral range 9-13.5 mu m and optimal wavelengths suitable for sensing them are determined. It is shown that the NH3-CO2 lidar can sense Freons at distances up to 10 km at a signal-to-noise ratio exceeding 10. Sensitivities of the lidar for sensing Freon-11 using various lines of the ammonia laser are calculated. It is shown that remote sensing of Freon-11 at concentrations of the order of 5 x 10(-6) % is possible at distances up to 8.5 km. |
| Databáze: | OpenAIRE |
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