The ionospheric pierce point (IPP) is a specific point in the ionosphere where a radio signal, traveling from a transmitting station on the Earth's surface, intersects the ionosphere. Essentially, it represents the location in the ionosphere where the RF (radio frequency) wave passes through as it propagates to or from the Earth's surface. Understanding IPPs is essential in fields like radio communications and satellite navigation, as the ionosphere can significantly affect the transmission of signals.
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