Short skip

from Wikipedia, the free encyclopedia
A short skip (blue) due to a Sporadic-E event.

A short skip is the shortening of the normal ionospheric path of propagation of a radio wave . A short skip can occur when there is a strong increase in ionization in the ionosphere . This occurs, for example, when a sporadic E-layer occurs , in which there is briefly strong local ionization in the E-layer of the ionosphere.

This can lead to both a shortening and an increase in the range of radio signals. For short waves , it means that signals that normally pass through the E-layer and are reflected on the higher-lying F-layer , now bounce off the E-layer. This leads to a shortening of the jump distance and thus the signal range and is known as a short skip .

Ultra-short waves , which are usually not reflected from the ionosphere, can now also be reflected from it, which leads to overreaching in this frequency range.

literature

  • Robert Richard Kühn: Radio technology: Basics of transmission, reception and radio location technology . Vieweg, 1963, ISBN 978-3-663-02468-2 , Chapter 11: Wave propagation.