I am trying to correlate two signals i recorded (Signal 1 = f(Signal 2)). Problem is, the two signals are not recorded at the same interval and both frequencies vary. I.e. Signal 1 is recorded every 15+-0.1 s and Signal 2 is recorded every 3+-0.05 s. Is there a (relatively simple) way to correlate both signals using a graph or an analyse algorithm?
The timestamps are expressed in dd/mm/yyyy hh:mm:ss.ss
Tx in advance for your replies or a link to a similar topic
You can use Analysis : Mathematics : Interpolate/Extrapolate Y from X to generate new Y values for your 'coarse' signal at the same X (date-time) values as your 'fine' signal. The new Ys can be generated using Linear, Cubic Spline or Cubic b-Spline. Then run correlation on the original 'fine' Y and the new 'fine' Y.
Correlate 2 signal /w different timestamp
Posted - 06/06/2011 : 12:59:58 PM
