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In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1] or HAGL) is a height measured with respect to the underlying ground surface.This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering).
Note that the velocity and position vectors need to be relative to the inertial frame of the central body. Eigenvector slew – In aerospace engineering, especially those areas dealing with spacecraft, the eigenvector slew is a method to calculate a steering correction (called a slew) by rotating the spacecraft around one fixed axis, or a ...
Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.
Height above mean sea level (AMSL) is the elevation (on the ground) or altitude (in the air) of an object, relative to a reference datum for mean sea level (MSL). It is also used in aviation, where some heights are recorded and reported with respect to mean sea level (contrast with flight level ), and in the atmospheric sciences , and in land ...
Above mean sea level (AMSL) Above ground level (AGL) Canadian Radio-television and Telecommunications Commission (CRTC) List of broadcast station classes; Topographic prominence – a similar measurement for mountains
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Notes FAA Federal Aviation Administration: U.S. Department of Transportation agency FAC Final approach course FACF final approach course fix Point at which the final approach descent is begun FADEC full authority digital engine control: Engine equipment FAC Flight Augmentation computer Avionics FAF final approach fix: FAF first available flight
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