Register to reply

Signal/Data Processing Question

by crispyrice2008
Tags: processing, signal or data
Share this thread:
May11-14, 12:17 PM
P: 1

I'm curious if there is a method to separate the signal from the noise in this kind of data set, other than manually do it by indexing.
the top plot is the data, the bottom plot is the zoom in of the data.
the time length for signal & data are relatively constant throughout the data, it always follow the order: noise, data, noise, data...

Phys.Org News Partner Engineering news on
A spray-on light show on four wheels: Darkside Scientific
Research project on accident-avoiding vehicle concluded
Smaller artificial magnetic conductors allow for more compact antenna hardware
May11-14, 07:20 PM
berkeman's Avatar
P: 41,281
Looks like the signal is lower frequency than the noise. Can you band-separate the signal from the noise?
May13-14, 03:48 AM
Sci Advisor
P: 1,951
Welcome to PF>

What are the regular high amplitude spikes? a reliable part of the the signal or synchronous noise?
What is the data? Is it RF signal strength in dB from a log detector? Maybe radar pulses?
Is it output from a two channel switching detector, so an application for a boxcar integrator?

Why is the noise floor with signal lower than without signal?
Is it a 50 ohm termination resistor at room temperature compared to a FET low noise signal preamp?

Is the raw signal, IF, available before log detection?

We cannot find something if we do not know what you are looking for.
I think it is necessary for you to define or identify what an ideal signal without noise would be.

Register to reply

Related Discussions
Matlab+signal processing question -finding output signal using FRF Electrical Engineering 2
Gravitational wave data analysis. More of Signal processing techniques Set Theory, Logic, Probability, Statistics 3
Signal processing and data correction Electrical Engineering 1
Signal and data processing Engineering, Comp Sci, & Technology Homework 1
Signal Processing question Engineering, Comp Sci, & Technology Homework 2