Skip Effect
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Skip Effect
</dt>
A phenomenon in which sound or radio
energy may be detected only at various distance intervals from the energy
source as the result of the presence of an energy reflecting or refracting
layer in the atmosphere. See radio duct.
</dd>
For long radio waves, the ionosphere acts as the reflecting layer. For
shorter wavelengths, the effect may be produced by strong superstandard
propagation in elevated layers of the troposphere. Skip effects make it
possible on occasion to detect targets at distances far greater than the
normal radio horizon, while closer targets remain undetected.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use