Selective availability worked by introducing pseudorandom variation into satellite clock used to generate C/A signal, which directly mapped into pseudorange err

Selective availability worked by introducing pseudorandom variation into satellite clock used to generate C/A signal, which directly mapped into pseudorange errors. http://www.nbmg.unr.edu/staff/pdfs/blewitt%20basics%20of%20gps.pdf http://www.nbmg.unr.edu/staff/pdfs/blewitt%20basics%20of%20g... (page 8)