pacchetto 4

Question 1

when autocorrelation functions is maximum

Answer 1

when time lag is equal to zero and tau=0

Question 2

Auto-correlation function

Answer 2

Auto-correlation measures the similarity of a signal with a delayed (or lagged) version of itself. It’s a measure of how much a signal correlates with itself at different time offsets.

Question 3

Cross-correlation function

Answer 3

Cross-correlation measures the similarity of a signal with an other one.
Restituting a value between zero and one .

Question 4

differences between auto and cross correlations

Answer 4

auto-correlation measures the similarity between a signal and a delayed version of itself, while cross-correlation measures the similarity between two different signals

Question 5

Example of application of correlation

Answer 5

Radar sistems to avoid noise from echos and relection use correlation

Question 6

normalization facto Rxx