Difference between revisions of "Altitude definitions"
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: ground altitude (above hMSL) defined by flightplan | : ground altitude (above hMSL) defined by flightplan | ||
For a proper explanation of the differences see [http://www.esri.com/news/arcuser/0703/geoid1of3.html this]. | |||
JSBsim uses GEOCENTRIC instead of GEODETIC latitude and altitude | JSBsim uses GEOCENTRIC instead of GEODETIC latitude and altitude | ||
see [http://www.br.flightgear.org/Docs/Scenery/CoordinateSystem/CoordinateSystem.html FlightGear CoordinateSystem] | see [http://www.br.flightgear.org/Docs/Scenery/CoordinateSystem/CoordinateSystem.html FlightGear CoordinateSystem] | ||
[[Category:Software]] [[Category:User_Documentation]] | [[Category:Software]] [[Category:User_Documentation]] | ||
Revision as of 16:17, 16 November 2011
- hMSL
- gps.hmsl is height in mm above mean sea level (height above geoid)
- gps altitude
- gps.lla_pos.alt is height in mm above WGS84 reference ellipsoid
- ground alt
- ground altitude (above hMSL) defined by flightplan
For a proper explanation of the differences see this.
JSBsim uses GEOCENTRIC instead of GEODETIC latitude and altitude see FlightGear CoordinateSystem