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Altera_Forum's avatar
Altera_Forum
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15 years ago

phase difference 2 signals.

is possible whit fpga FFT or similar metod measure a phase difference from 2 PULSED-sinusoidals signals? the freq of signals is 60MHz but the duration of signals is 0.5uSEC, and the PRF of pu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Is there any reason why these two signals are pulsed sinusoids?

If this is a ranging application, then an FM chirp (linear FM pulse) would be more appropriate. Pulse compression of the FM chirp (correlation) then results in delta-function like responses (with a width determined by the pulse bandwidth). The 'time delay' between the delta functions can then be determined.

Pseudo-random sequences can also be transmitted and pulse compressed in this manner.

What are you trying to do?

Cheers,

Dave