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Optical Engineering

Evaluation of differential absorption lidar (DIAL) measurement error by simultaneous DIAL and null profiling
Author(s): Tetsuo Fukuchi; Takashi Fujii; Naohiko Goto; Koshichi Nemoto; Nobuo Takeuchi
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Paper Abstract

A differential absorption lidar system for measurement of trace atmospheric substances in the visible and UV regions is developed. The system is based on a pair of Nd:YAG pumped dye lasers, each capable of emitting two wavelengths on alternate shots. The measurement error of the system was evaluated by measurement of tropospheric O3 using two identical differential absorption lidar (DIAL) pairs, from which two null profiles and four DIAL profiles are obtained simultaneously. The null profiles, obtained for both the on and off wavelengths used in DIAL measurement, are useful to evaluate systematic DIAL measurement error due to beam misalignment. The null profiles show that this systematic error is at most 1.3%. The total DIAL measurement error is about 5%, most of which can be attributed to statistical error.

Paper Details

Date Published: 1 March 2001
PDF: 6 pages
Opt. Eng. 40(3) doi: 10.1117/1.1347999
Published in: Optical Engineering Volume 40, Issue 3
Show Author Affiliations
Tetsuo Fukuchi, Central Research Institute of Electric Power Industry (Japan)
Takashi Fujii, Central Research Institute of Electric Power Industry (Japan)
Naohiko Goto, Central Research Institute of Electric Power Industry (Japan)
Koshichi Nemoto, Central Research Institute of Electric Power Industry (Japan)
Nobuo Takeuchi, Chiba Univ. (Japan)

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