CA Code modulation CIA bi-phase modulated signal A0M0owW 電 Princip es of the Global Positioning System 20053-18(19 P-Code generation Po carrier 9 uadrature modulated s 046400 P-code rate should 10 times higher than CIA code Principles of the Global Positioning System 2005-3- 1010 Principles of the Global Positioning System 2005-3-18 19 0 Vo -Vo C/A carrier (a) 0 C/A code bits (b) 0 C/A bi-phase modulated signal (c) CA Code Modulation Principles of the Global Positioning System 2005-3-18 20 P-Code generation 0 P(Y) carrier √2Vo -√2Vo (d) 0 P(Y) code bits (e) 0 P(Y) bi-phase quadrature modulated signal (f) P-code rate should 10 times higher than C/A code