I am sure this has been answered somewhere, but I can't seem to locate an answer anywhere. I have a modeled signal and an experimentally obtained signal (taken with a 150 MHz photodiode). It is obvious that there is signal ringing associated with the impulse response. How could I (a) model the impulse response on the modeled signal, or (b) remove the impulse response from the experimentally obtained signal? With my current setup I can't measure the response of the photodiode with a Dirac-delta function input which is making this a little bit more difficult. I assume that I should be able to arrive at a transfer function for the photodiode. I tried convolving the model with a damped oscillator based on the photodiode specs, but that didn't give me the right solution.