Greetings everyone,
 
I have been using a USRP N310 to record GPS L1 RF data into a file, which I later use to test a GNSS software receiver (gnss-sdr).
Now I am interested in testing the receiver in dual-band operation mode - GPS L1 + L5.
 
Can someone please indicate how I can record the two bands simultaneously?
 
Attached is the Matlab script I use to record GPS L1 RF data. I would greatly appreciate it if someone could tell me what modifications are required to record both L1 and L5.
 
Thank you in advance for your time,
Pedro