Journal ArticleDOI
Time domain difference amplifier
TLDR
In this paper, the authors describe a new electronic circuit, the time domain difference amplifier (TDAM), used to reduce strong drifts which bury weak repetitive signals, where the input, with signal and drift, is sampled at signal on and signal off states, and subtracted from each other.Abstract:
This paper describes a new electronic circuit, the time domain difference amplifier, used to reduce strong drifts which bury weak repetitive signals. The principle is that the input, with signal and drift, is sampled at signal on and signal off states, and subtracted from each other. The random drift is reduced by integrating the subtracted values. Drift suppression is about 35 dB for 3.0 Hz ac drift and 100 repeatings for integration.read more
Citations
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Journal ArticleDOI
A low-cost gated integrator boxcar averager
TL;DR: In this paper, a low-cost, true integrating averager circuit was designed for applications where low-level signal voltages must be recovered from noisy waveforms, and the design separates the integrating, averaging and amplifying stages of the unit, so that correct functionality of each is guaranteed.
Journal ArticleDOI
Automatically sweeping dual-channel boxcar integrator.
TL;DR: An automatically sweeping dual-channel boxcar integrator has been developed to automate the search for a signal that repeatedly follows a trigger pulse by a constant or slowly varying time delay when that signal is completely hidden in random electrical noise and dc-offset drifts.
Gated multi-cycle integration (GMCI) for focal plane array (FPA) applications
TL;DR: In this article, the authors developed a gated multi-cycle integration (GMCI) model for focal plane array dealing with repetitive or modulated image, which is used for signal integration even if there exists a strong background.
Journal ArticleDOI
Ultrasonics Freight-Train Correlator
TL;DR: The results obtained provided no reasons against the assumption of normality in any of the three cases A, B, or C, and indicate a significant difference in accuracy between the manufacturer A and the remaining two.
References
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Journal ArticleDOI
Boxcar Integrator Attachment for Oscilloscopes
TL;DR: A simple circuit that can be used to improve the signal‐to‐noise (S/N) ratio of a repetitive signal is described and can improve the S/N ratio of the input signal by better than 35 dB.
Journal ArticleDOI
``Boxcar'' Attachment for Oscilloscopes Useful for Low Level Signals
TL;DR: In this paper, an inexpensive boxcar integrator for improving the signal-to-noise (S/N) ratio of low level repetitive signals is described, using the timing circuits of an oscilloscope to generate the gate and delay.