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Bath scintillation receiver

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The Invert group operates a GPS (Global Positioning System) scintillation receiver on the Bath University campus. This is far from both the equator and the poles, and so as the signals travel from the satellites to the receiver, they will pass through the ionosphere in a relatively undisturbed region. See the space weather page for more information.

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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