Measuring Travelling Ionospheric Disturbances Using Transmitters of Opportunity
Travelling Ionospheric Disturbances (TIDs) result from large-scale waves in the upper atmosphere somewhat analogous to ocean waves, though propagating internal to the medium rather than on the surface. By transporting energy they play a role in determining the temperature profile of the upper atmosphere. They also affect radio signals propagating through and beneath the ionosphere.
[more]