KALMAN FILTERING OF TUNABLE DIODE-LASER SPECTROMETER ABSORBENCY MEASUREMENTS

Authors
RIRIS H CARLISLE CB WARREN RE
Citation
H. Riris et al., KALMAN FILTERING OF TUNABLE DIODE-LASER SPECTROMETER ABSORBENCY MEASUREMENTS, Applied optics, 33(24), 1994, pp. 5506-5508
Citations number
11
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
33
Issue
24
Year of publication
1994
Pages
5506 - 5508
Database
ISI
SICI code
0003-6935(1994)33:24<5506:KFOTDS>2.0.ZU;2-9
Abstract
A recursive Kalman time-series filter was applied to absorbance measur ements obtained with a tunable diode laser spectrometer. The spectrome ter uses frequency modulation spectroscopy and a near-infrared diode l aser operating at 1.604 mum to monitor the CO2-vapor concentration in a 30-cm absorption cell. The Kalman filter enhanced the signal-to-nois e ratio of the spectrometer by an order of magnitude when an absorbanc e of 6 x 10(-5) was monitored.