SIGNAL-TO-NOISE RATIO ENHANCEMENT IN FREQUENCY-MODULATION SPECTROMETERS BY DIGITAL SIGNAL-PROCESSING

被引：45

作者：

RIRIS, H

CARLISLE, CB

WARREN, RE

COOPER, DE

机构：

[1] SRI International, Menlo Park, CA, 94025

来源：

OPTICS LETTERS | 1994年 / 19卷 / 02期

关键词：

D O I：

10.1364/OL.19.000144

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A signal-to-noise ratio enhancement of an order of magnitude was observed when digital signal-processing algorithms were applied to two diode-laser frequency-modulation spectrometers in the near-infrared and midinfrared spectral ranges. These algorithms include digital bandpass filters, a Wiener filter, a matched filter, and a least-squares fit. Digital signal processing has a practical advantage over other noise suppression techniques because it is easy to implement and to adapt to all experiment configurations without any physical modifications or additions to the spectrometer.

引用

页码：144 / 146

页数：3

共 14 条

[1]

[Anonymous], 1989, FUNDAMENTALS DIGITAL

[2] FREQUENCY-MODULATION (FM) SPECTROSCOPY - THEORY OF LINESHAPES AND SIGNAL-TO-NOISE ANALYSIS [J].