Pressure altitude is an aircraft's height above a theoretical standard datum plane, used to standardize performance calculations regardless of actual atmospheric conditions. It is calculated by ...

A dedicated altimeter set to QFE (height above aerodrome) offers a cost-effective and often superior alternative to radar altimeters for knowing height above the airport, improving pilot situational ...

While traditionally a project geared more toward the model rocket crowd, a lot of people are flying quadcopters these days, and knowing the altitude your RC aircraft reached is a nice thing to know.

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 ...