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Pulse to pulse phase coherency.... How to measure

Question asked by TE_Ed on Jan 24, 2014
Latest reply on Jan 28, 2014 by algoss
I'm testing a generator and would like to test the phase coherency between pulses. 

The first pulse is transmit pulse for the radar. Lets say it has a frequency of 3.1 GHz. 

The second pulse is the receive pulse which will go to the mixer, at a frequency of 3.0 GHz. 

Assume each pulse is 100 usec longs, and the PRI is 1 ms. 

How can I check the phase coherency of these two pulses?