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Figure 12


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L1 signal to noise ratio (C/N0) for simultaneous measurements of G30 from the FM101 POD and BRO antennas. Note the increased C/N0 for the BRO antenna. The dashed line (right axis) shows the elevation angle of the GPS transmitter, as seen from the LEO. The discontinuity in the POD C/N0 occurs at an elevation of around 0° as the ray transitions from the main beam of the antenna to a sidelobe.

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