Transformations of station coordinates, velocities, and Earth orinetation parameters (EOP) between various ITRF realizations, and conversion between Cartesian (x, y, z) and geodetic (longitude, latitude, altitude) coordinates w.r.t. More...

Functions
int	novas_cartesian_to_geodetic (const double restrict xyz, enum novas_reference_ellipsoid ellipsoid, double restrict lon, double restrict lat, double restrict alt)
	Converts geocentric Cartesian site coordinates to geodetic coordinates on the given reference ellipsoid.

int	novas_geodetic_to_cartesian (double lon, double lat, double alt, enum novas_reference_ellipsoid ellipsoid, double *xyz)
	Converts geodetic site coordinates to geocentric Cartesian coordinates, using the specified reference ellipsoid.

int	novas_geodetic_transform_site (enum novas_reference_ellipsoid from_ellipsoid, const on_surface in, enum novas_reference_ellipsoid to_ellipsoid, on_surface out)
	Transforms a geodetic location from one reference ellipsoid to another.

int	novas_itrf_transform (int from_year, const double restrict from_coords, const double restrict from_rates, int to_year, double to_coords, double to_rates)
	Converts ITRF coordinates between different realizations of the ITRF coordinate system.

int	novas_itrf_transform_eop (int from_year, double from_xp, double from_yp, double from_dut1, int to_year, double restrict to_xp, double restrict to_yp, double *restrict to_dut1)
	Transforms Earth orientation parameters (xp, yp, dUT1) from one ITRF realization to another.

int	novas_itrf_transform_site (int from_year, const on_surface in, int to_year, on_surface out)
	Transforms a geodetic location between two International Terrestrial Reference Frame (ITRF) realizations.

Detailed Description

Transformations of station coordinates, velocities, and Earth orinetation parameters (EOP) between various ITRF realizations, and conversion between Cartesian (x, y, z) and geodetic (longitude, latitude, altitude) coordinates w.r.t.

the reference ellipsoid.

REFERENCES:

ITRS Conventions Chapter 4, see https://iers-conventions.obspm.fr/content/chapter4/icc4.pdf

Date: Created on Aug 26, 2025

Author: Attila Kovacs

Since: 1.5

See also: observer.c

Functions

Detailed Description