Numerical analysis of CO2 DIAL measurement sensitivity
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1.
College of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;
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2.
Air Force Headquarter, Chengdu Military Area, Chengdu 610041, China
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Received Date:
2003-09-15
Accepted Date:
2003-11-14
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Abstract
For direct detection,long-range CO2 differential absorption lidar (DIAL) system,two factors which have effects on measurement sensitivity:atmospheric turbulence and laser speckle are analyzed.Numerical calculation results of the dependent relationship between measurement sensitivity and atmospheric turbulence and laser speckle are obtained.These results show that when the height is smaller than 350m,measurement sensitivity can be efficiently improved by increasing the height of equipment above ground;when the height is bigger than 350m,measurement sensitivity can be efficiently improved by changing system parameters.
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References
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