All Questions
Tagged with signal-processing error-analysis
6
questions with no upvoted or accepted answers
2
votes
2
answers
53
views
How can I determine an error on total noise?
I am analyzing the data for an experiment, where we measured the total noise in a system. The total noise is defined as the variance of the signal (and is equal tot the integral over the noise ...
- 21
1
vote
0
answers
27
views
Is there a graphical summary of which modulation technique to use in communication systems using Visible Light Communication techniques?
I am currently looking at various papers written (some listed at the bottom) that discuss how laser pulses can be modulated to send encoded messages to a receiver for communication systems. The more I ...
- 221
1
vote
0
answers
62
views
Why can't we use the Neyman-Pearson likelihood ratio directly?
If you have a bunch of events and would like to choose a cut to distinguish background and signal, you can take the likelihood ratio
$$
\lambda(\vec x) = \frac{f(\vec x| s)}{f(\vec x| b)}
$$
and the ...
- 4,217
0
votes
0
answers
76
views
What's the formula of SNR (Signal to Noise Ratio) to dipole antenna array (eg, LOFAR) look like?
It was wellknown that the SNR of single dish telescope reads
$$s/n=\frac{P_s}{P_n}=\frac{P_{s}}{T_n}\sqrt{\frac{t}{B}},$$
where $P_s$ is the collected power, $T_n$ the noise temperature, $t$ the ...
- 1
0
votes
0
answers
43
views
FFT on a signal with a length that is not a multiple of the period of its harmonics
I was very surprised to find an apparent limitation to a FFT on a simple signal.
Let's consider a timeseries made of L=100 points, and simply composed of the sum of two sinus waves: one with a ...
- 127
0
votes
0
answers
48
views
Measuring signal shorter than instrument response function
If one has a well-defined instrument response function (IRF) of some known full-width half maximum (FWHM), and they are measuring a signal that is shorter (but the shape is known), is it possible to ...
- 121