Research on weak signal detection of integral average digital lock-in amplifier
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/ac0d74
Abstract: In the process of detecting the amplitude and phase of the weak signal based on digital lock-in amplifier (DLIA), a low-pass filter (LPF) with an extremely low cut-off frequency is required. Even so, the effect… read more here.
Keywords: detection; lock amplifier; digital lock; weak signal ... See more keywords
Suppression of Odd Harmonic Interference in a Fast Digital Lock-in Amplifier Based on Square Wave Signal
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3267557
Abstract: Odd harmonic interference is observed in a fast digital lock-in amplifier (FDLIA) with square wave signals as carrier and reference signals, which will reduce spectrum utilization. To address this problem, a method to suppress odd… read more here.
Keywords: square wave; harmonic interference; fast digital; digital lock ... See more keywords
APPLICATION OF DIGITAL LOCK-IN AMPLIFIER IN COMPLEX ELECTROMAGNETIC INTERFERENCE OF SUBSTATION
Sign Up to like & getrecommendations! Published in 2020 at "Progress in Electromagnetics Research C"
DOI: 10.2528/pierc20071001
Abstract: There is complex electromagnetic interference in the substation. In order to improve detection accuracy, a digital lock-in amplifier is used in the detection of the grounding grid. This paper introduces the principle of non-destructive testing… read more here.
Keywords: complex electromagnetic; grounding grid; digital lock; lock amplifier ... See more keywords