Lidar sounding of atmosphere trace gases by the differential absorption method: simulation and experiment results
Relevance of the research is caused by the necessity to develop laser sensing methods for solving the environment monitoring problem. The main aim of the study is the development of the program-algorithmic system for laser remote sensing of gas components in atmosphere using differential absorption,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2019-05-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/1432 |
| Summary: | Relevance of the research is caused by the necessity to develop laser sensing methods for solving the environment monitoring problem. The main aim of the study is the development of the program-algorithmic system for laser remote sensing of gas components in atmosphere using differential absorption, the search of the informative wavelengths, simulation of gas remote sensing and experiments at selected wavelengths for remote sensing of atmosphere gas components. The methods used in the study: differential absorption method based on resonant absorption of laser radiation within a selective absorption line of the analyzed gas component. The results: The developed program-algorithmic system "LIDAS" allows determining informative wavelengths for laser remote sensing of atmosphere gas components and simulating as well the remote sensing of gases in atmosphere; estimating systematic errors of atmospheric gas profiles reduction; working out requirements for differentiation absorption lidars; planning and carrying out the experiments on lidar measurements of gas profiles. The numerical simulation showed that when using lidar based on overtone CO-laser in the 0-5 km height region at diameter of the receiving optics 0,3 m and spatial resolution of 1 km the echo-signal level for all measured gases exceeds the level of the NEP=10-9 W. The experiments on laser diagnostics of atmosphere gas components by overtone CO-laser confirmed the results of preliminary evaluation of the efficiency of applying differential absorption considering the requirements of spectral energy parameters of sensing complex, computed by the developed algorithmic system "LIDAS". |
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| ISSN: | 2500-1019 2413-1830 |