Digital gain balancing technique for sensitive detection of minor gas concentrations
Digital gain balancing technique for sensitive detection of minor gas concentrations
复制标题
用于灵敏检测微量气体浓度的数字增益平衡技术
DOI：
10.1109/icecs.2008.4674989
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
H. McCann
中科院分区：
文献类型：
--
作者：
S. Pal;P. Wright;H. McCann
对次要物种的超灵敏检测在许多领域都很重要。在过程工程中，对气体物种的直接在线测量的要求促使在短路径上进行快速测量。由此产生的高带宽和低吸收降低了测量信噪比(SNR)。我们的目标是检测发动机尾气中的一氧化碳，在几千赫处的灵敏度为0.05ppm-m。本文讨论了一种新的电子方案，并给出了仿真结果。遵循一种通用方法，将其与脉冲或连续波(CW)激光源一起使用。为了更好地理解整个方案的信噪比，给出了详细的噪声分析。
Ultra-sensitive detection of minor species is important in many fields. The requirement of direct online measurement of gas species in process engineering motivates fast measurements over short pathlengths. The resulting high bandwidth and low absorptions reduce the measurement Signal-to-Noise Ratio (SNR). Our target is to detect CO in engine exhaust with sensitivity of the order of 0.05 ppm-m at several kHz. In this paper, a novel electronic scheme is discussed and presented with simulation results. A generic approach is followed, to use it with either a pulsed or a continuous wave (CW) laser source. A detailed noise analysis is presented for improved understanding of the SNR of the overall scheme.
少量浓度一氧化碳的断层扫描测量的计算研究
影响因子：
2.4
作者：
Pal S
通讯作者：
Pal S
影响因子：
1.9
作者：
Kosterev, AA;Tittel, FK;Allen, MG
通讯作者：
Allen, MG