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Pressure altitude defines an aircraft's height above the standard datum plane, a theoretical sea level under standardized atmospheric conditions (29.92 inHg and 15°C). It is a critical metric for ...

Garmin has introduced the GRA 5500, its first all-digital radar altimeter, designed to bring high-accuracy altitude measurements previously seen only in air transport and military aircraft to general ...

It’s hard to believe that in 2016 Oris was the only the second watchmaker to offer a mechanical altimeter in a wrist watch. The first was a Breva model costing over $100,000, while the Oris, in ...

Here is a neat project I found at Matjaž Vidmar’s Website. The purpose of this project was to design an accurate radio altimeter with a dual-channel (quadrature) homodyne receiver. This new design ...

Most airplanes fly above Mean Sea Level altitudes (MSL), the altimeter would read 5,280 feet in Denver. They are corrected for barometric pressure. When flying above 18,000 feet in the U.S., airplanes ...