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Magnitude/Gain of a Signal

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faisal349

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Hi,

I have a chirp signal whose frequency vary from 18kHz to 23kHz. I have a transmitter and a receiver which sends and receives the chirp signal respectively. Now, I want to measure the magnitude/gain of the signal at different distances (e.g. 1m, 2m, 3m etc). What I do is that I take the FFT of the received signal and then take the highest peak in the 18kHz-23kHz range.

Is it a good way to measure the gain or would you suggest a better approach?

Thanks.

Regards
 

Measuring the "energy" integral ∫V²dt is probably simpler and more accurate.
 

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