Construction: G1 and G2i are two 1023-bit linear patterns. The modulo-2 sum of these two comprise Gi(t) i.e the C/A code. G2i is deferred by an integer between 5 to 950; to generate 36 exclusive G(t) patterns.
These G1 and G2 patterns are constructed using 10 bit shift registers with polynomials as follows;