thank you mr thylacine1975 for your fast response ,Im using VNA as gpr (ground proping radar) i tried to determine the locations of targets under ground from the transmission coffetionet S21 between two antennas from the phase vs freq graph of s21.
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so i have data (freq 3.6Ghz-7.6Ghz with step 40Mhz) 105 point and each freq has its corrspponding phase,i want to plot log magnitude vs time to get the refflections time to determine the distance of the target.
Thanks in advance