Abstract

The average rate of decay of radio signals reflected from under-dense meteor trails has been shown to follow a simple dependence on trail height. However the decay of a radio echo from a single trail can vary widely from the average for its height. The possibility that this could be caused by an irregular ionization line density along the trail is examined, and decays are calculated for a trail which has a random variation in ionization along its length. The results show only small variations in the signal decay for a stationary trail. However large variations can occur if the trail is in a wind-field subject to shear.

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