Difference between revisions of "Altitude definitions"

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;'''hMSL'''  
;'''hMSL'''  
: ''booz_gps_state.hmsl'' is height above mean sea level (height above geoid)
: ''gps.hmsl'' is height in mm above mean sea level (height above geoid)
;'''gps altitude'''  
;'''gps altitude'''  
: ''booz_gps_state.lla_pos.alt'' is height above WGS84 reference ellipsoid
: ''gps.lla_pos.alt'' is height in mm above WGS84 reference ellipsoid
;'''ground alt'''  
;'''ground alt'''  
: ground altitude (above hMSL) defined by flightplan
: ground altitude (above hMSL) defined by flightplan

Revision as of 05:34, 7 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


JSBsim uses GEOCENTRIC instead of GEODETIC latitude and altitude see FlightGear CoordinateSystem