An altimeter is an avionics instrument used to measure the altitude of an aircraft or other object above a fixed level. It is an important component of a flight instrument system, providing pilots with information about their altitude and rate of climb or descent. Altimeters are typically based on either barometric pressure or radar technology. Barometric altimeters measure the pressure of the air around the aircraft and use this to calculate the altitude. Radar altimeters measure the time it takes for a radar signal to travel from the aircraft to the ground and back, and use this to calculate the altitude. Altimeters are used in a variety of applications, including commercial and military aircraft, unmanned aerial vehicles, and spacecraft. They are also used in navigation systems, such as GPS, to provide altitude information. The altimeter market is a key component of the avionics industry, providing essential instruments for aircraft and other objects. Companies in the market include Honeywell, Rockwell Collins, Thales, Garmin, and Universal Avionics. Show Less Read more
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