Application of a Fourier transform based filtering technique to improve signal-to-noise ratio in modulation spectroscopy experiments
作者:
Sandip Ghosh,
B. M. Arora,
期刊:
Review of Scientific Instruments
(AIP Available online 1997)
卷期:
Volume 68,
issue 8
页码: 3260-3261
ISSN:0034-6748
年代: 1997
DOI:10.1063/1.1148278
出版商: AIP
数据来源: AIP
摘要:
It is shown that a simple rectangular filter is a good approximation to Wein’s optimal filter for improving the signal-to-noise ratio in a typical modulated reflectance spectroscopy experiment. This enables one to obtain identical information from data recorded with much smaller time constants for data averaging and therefore faster scan speeds. The limitations of this method are also discussed. ©1997 American Institute of Physics.
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