Earth Namespace Reference

Typedefs
typedef enum Earth::Model	Model
Enumerations
enum	Model { SPHERICAL_MODEL = 0, WGS84_MODEL }
Functions
double	get_radius ()
	return the distance to the center of the earth in meters Based on the WGS84 conventions, if the earth is considered as : a sphere, it will have a radius of 6371007.2 m an ellipsoid, the equatorial radius will be 6378137.0 m and the polar 6356752.3142 m

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Detailed Description

geometry constants of the earth Source : http://en.wikipedia.org/wiki/Earth_radius

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Enumeration Type Documentation

enum Earth::Model

define the earth model to use

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Function Documentation

double Earth::get_radius

(

)

return the distance to the center of the earth in meters Based on the WGS84 conventions, if the earth is considered as :

• a sphere, it will have a radius of 6371007.2 m
• an ellipsoid, the equatorial radius will be 6378137.0 m and the polar 6356752.3142 m

Returns:

the radius of the earth in meters, eventually at the given latitude

Referenced by Viewing::alt_to_range(), Geocentric::get_haversine_dist(), Spherical::Point3D::to_geocentric(), and Geocentric::Point3D::to_spherical().