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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).
Above ground level – In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1]) is a height measured with respect to the underlying ground surface. This is as opposed to altitude/elevation above mean sea level (AMSL), or (in broadcast engineering ) height above average terrain (HAAT).
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.
mean sea level: MSLW Max. Structural Landing Weight MSP Modes S-Specific Protocol MSSS Mode S-Specific Services MSTOW Max. Structural Take-off Weight MSZFW Max. Structural Zero Fuel Weight MTBF Mean time between failures: MTBSV Mean time between shop visit MTBUR Mean time between unscheduled removals MTOW maximum take-off weight: MTTF Mean time ...
A common and relatively straightforward mean sea-level standard is instead a long-term average of tide gauge readings at a particular reference location. [1] The term above sea level generally refers to the height above mean sea level (AMSL). The term APSL means above present sea level, comparing sea levels in the past with the level today.
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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