Stochastic multi-channel lock-in detection
Stochastic multi-channel lock-in detection
复制标题
随机多通道锁定检测
DOI:
10.1088/1367-2630/16/1/013005
复制
发表时间:
2014
影响因子:
3.3
通讯作者:
Hudson J
中科院分区:
文献类型:
--
作者:
Hudson J
High-precision measurements benefit from lock-in detection of small signals. Here we discuss the extension of lock-in detection to many channels, using mutually orthogonal modulation waveforms, and show how the choice of waveforms affects the information content of the signal. We also consider how well the detection scheme rejects noise, both random and correlated. We address the particular difficulty of rejecting a background drift that makes a reproducible offset in the output signal and we show how a systematic error can be avoided by changing the waveforms between runs and averaging over many runs. These advances made possible a recent measurement of the electron's electric dipole moment (Hudson et al 2011 Nature 473 493).
DOI:
--
发表时间:
1971
期刊:
影响因子:
--
作者:
G. Harrison;M. Player;P. Sandars
通讯作者:
P. Sandars
影响因子:
1.6
作者:
W. C. Michels;E. D. Redding
通讯作者:
E. D. Redding