true altitude


Also found in: Dictionary.
Related to true altitude: Pressure altitude, Density altitude

true altitude

[′trü ′al·tə‚tüd]
(meteorology)

True Altitude

 

(also, absolute altitude), in geodesy, the distance along a vertical from a given point on the surface of the earth to sea level. It is determined by leveling. In the USSR, true altitude is calculated from zero on the depth gauge in Kronstadt.

true altitude

true altitude
i. The actual height above sea level. The calibrated altitude corrected for air temperature. See altitude.
ii. The actual altitude of a celestial body above the celestial horizon. The observed altitude must be corrected for several variables before it becomes the true altitude.
References in periodicals archive ?
Even with the correct altimeter setting your barometric altitude can differ from your true altitude by as much as 10 percent.
Even though you might be exactly at your true altitude, the altitude of the other traffic could be several thousand feet off
Corrections applied to the Pole Star altitude bring it to the true altitude of the celestial pole, and thus to the latitude of the observer.