Evaluation of differential absorption lidar (DIAL) measurement error by simultaneous DIAL and null profiling

Citation
T. Fukuchi et al., Evaluation of differential absorption lidar (DIAL) measurement error by simultaneous DIAL and null profiling, OPT ENG, 40(3), 2001, pp. 392-397
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICAL ENGINEERING
ISSN journal
0091-3286 → ACNP
Volume
40
Issue
3
Year of publication
2001
Pages
392 - 397
Database
ISI
SICI code
0091-3286(200103)40:3<392:EODAL(>2.0.ZU;2-Q
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 wavele ngths on alternate shots. The measurement error of the system was evaluated by measurement of tropospheric O-3 using two identical differential absorp tion lidar (DIAL) pairs, from which two null profiles and four DIAL profile s are obtained simultaneously. The null profiles, obtained for both the on and off wavelengths used in DIAL measurement, are useful to evaluate system atic DIAL measurement error due to beam misalignment. The null profiles sho w that this systematic error is at most 1.3%. The total DIAL measurement er ror is about 5%, most of which can be attributed to statistical error. (C) 2001 Society of Photo-Optical Instrumentation Engineers.