Description:
Convert geodetic
position to geocentric.
Invocation
void palGeoc( double p, double h, double
∗ r, double
∗z
);
Arguments
p = double (Given)
latitude (radians)
h = double
(Given)
height above reference spheroid (geodetic, metres)
r = double
∗ (Returned)
distance from
Earth axis (AU)
z = double ∗
(Returned)
distance from plane of Earth equator (AU)
Notes:
-
Geocentric latitude can be obtained by evaluating atan2(z,r)
-
Uses WGS84 reference ellipsoid and calls eraGd2gc
Copyright © 2012 Science and Technology Facilities Council.
Copyright © 2014 Cornell University.
Copyright © 2015 Tim Jenness