A multichannel phase-sensitive detection method using orthogonal square waveforms

A multichannel phase-sensitive detection method using orthogonal square waveforms
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一种基于正交方波的多通道相敏检测方法

DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
P. Sandars
P. Sandars
中科院分区：
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文献类型：
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作者：
G. Harrison;M. Player;P. Sandars

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已经开发出一种系统，用于分析随多个参数以线性方式变化的信号。该方法允许同时提取信号中随着每个调制参数而变化的那些部分，以及取决于所选择的调制参数乘积的任何部分。当灵敏度接近散粒噪声设定的极限时，该方法已用于测量分子束实验中共振频率的微小变化。
A system has been developed for the analysis of signals that vary in a linear manner with several parameters. The method allows simultaneous extraction of those parts of the signal which vary as each modulation parameter, and also any parts which depend on chosen products of the modulation parameters. The method has been used to measure small shifts of resonance frequency in molecular beam experiments, when a sensitivity approaching the limit set by shot noise has been achieved.