Altitude Measurement
Altitude measurement is the process of determining the vertical distance of an aircraft above a reference point, usually mean sea level. There are several methods of altitude measurement, including barometric, radar, and GPS. Barometric altitude measurement relies on the measurement of atmospheric pressure, while radar altitude measurement uses radio waves to determine the distance between the aircraft and the ground. GPS altitude measurement uses satellite signals to determine the altitude of the aircraft. Accurate altitude measurement is essential for safe flight, as it allows pilots to maintain proper separation from other aircraft and terrain.
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