Figure 5: Modernization Milestone

FIGURE 5: The L1 spectrum of GPS SVN 49 satellite, captured at 4:20am PDT on April 10, 2009, at Stanford, California. Satellite elevation was 46 degrees and azimuth was 314 degrees. The spectrum shows the 1.023 MHz C/A signal, the BOC(10, 5) M code signal, as well as the 10.23 MHz L1 P(Y) signal.