Convert from geocentric latitude to radius of ellipsoid planet
r = geocradius(lambda)
r = geocradius(lambda, model)
r = geocradius(lambda, f, Re)
r = geocradius(lambda)
estimates
the radius, r
, of an ellipsoid planet at a particular
geocentric latitude, lambda
. lambda
is
in degrees. r
is in meters. The default ellipsoid
planet is WGS84.
r = geocradius(lambda, model)
is
an alternate method for estimating the radius for a specific ellipsoid
planet. Currently only 'WGS84'
is supported for model
.
r = geocradius(lambda, f, Re)
is
another alternate method for estimating the radius for a custom ellipsoid
planet defined by flattening, f
, and the equatorial
radius, Re
, in meters.
Determine radius at 45 degrees latitude:
r = geocradius(45) r = 6.3674e+006
Determine radius at multiple latitudes:
r = geocradius([0 45 90]) r = 1.0e+006 * 6.3781 6.3674 6.3568
Determine radius at multiple latitudes, specifying WGS84 ellipsoid model:
r = geocradius([0 45 90], 'WGS84') r = 1.0e+006 * 6.3781 6.3674 6.3568
Determine radius at multiple latitudes, specifying custom ellipsoid model:
f = 1/196.877360; Re = 3397000; r = geocradius([0 45 90], f, Re) r = 1.0e+006 * 3.3970 3.3883 3.3797
Stevens, B. L., and F. L. Lewis, Aircraft Control and Simulation, John Wiley & Sons, New York, NY, 1992
Zipfel, P. H., and D. E. Penny, Modeling and Simulation of Aerospace Vehicle Dynamics, AIAA Education Series, Reston, VA, 2000