Scintillation data (Bath)

The scintillation receiver takes 50 GPS measurements per second, and performs statistical analysis on these measurements. These statistics are shown below. The S4 index (top) is a measure of amplitude scintillation, that is rapid variation in the apparent signal strength. Sigma phi (bottom) is a measure of phase scintillation, that is (roughly speaking) rapid oscillation in the delay between the signal leaving the satellite and arriving at the receiver.

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