That's because GPS signals are only encoding 50 bits/second of data, and spreading it across 10 Mhz of bandwidth... with a processing gain of about 43 dB.[1] [

That's because GPS signals are only encoding 50 bits/second of data, and spreading it across 10 Mhz of bandwidth... with a processing gain of about 43 dB.[1] [1] https://www.ieee.li/pdf/viewgraphs/gnss_fundamentals.pdf https://www.ieee.li/pdf/viewgraphs/gnss_fundamentals.pdf See slides 37 and 38