Issue With IQ

Hi,
I am experimenting with ADS-B and I am trying to collect the raw IQ samples. I get the raw IQ while doing the rtl_sdr command and dumps to output.bin file but I need the raw IQ for each ADS-B signal for each aircraft. Is there anyway I can differentiate the IQ for each ADS-B signal. My ultimate goal is to differentiate the IQ for each ADS-B signal from each aircraft.
I would greatly appreciate if you help me with this. Please.