I have multiple data sets of the same signal measured using the same hardware and I want to know what sort of techniques I can use to improve the SNR.
I was thinking if I adjust and ensure they have the same phase, i could coherently add them, but I didn't really see an improvement in SNR. I'm guessing the reason for this is because the noise gets added together as well.
It makes me wonder two things:
What are some valid ways to combine like signals, to improve SNR
Is there any way to exploit the similarity in signals to reduce noise?