I am currently working on the post processing of the IQ data generated from the Skydel GNSS simulator. The work involves GPS satellites (L1C/A) where all SV ID are present. Both RF and C/A are enabled in the signal. In addition, there is an aerial object and a gNodeB created as interferers. I wonder how I should start in processing the IQ samples. I guess the IQ samples are baseband signals, so there is no carrier frequency and IF frequency. However, I wonder if the PRN sequence is contained in the IQ samples. Note that the chipping rate for C/A should normally be 1.023 MHz.