Workspace functions of geodetic character. More...

#include <cmath>
#include <stdexcept>
#include "arts.h"
#include "check_input.h"
#include "geodetic.h"
#include "matpackI.h"
#include "messages.h"

Functions
void	refellipsoidForAzimuth (Vector &refellipsoid, const Numeric &latitude, const Numeric &azimuth, const Verbosity &)
	WORKSPACE METHOD: refellipsoidForAzimuth. More...

void	refellipsoidOrbitPlane (Vector &refellipsoid, const Numeric &orbitinc, const Verbosity &)
	WORKSPACE METHOD: refellipsoidOrbitPlane. More...

void	refellipsoidSet (Vector &refellipsoid, const Numeric &re, const Numeric &e, const Verbosity &)
	WORKSPACE METHOD: refellipsoidSet. More...

Variables
const Numeric	DEG2RAD

Detailed Description

Workspace functions of geodetic character.

Author: Patrick Eriksson Patri.nosp@m.ck.E.nosp@m.rikss.nosp@m.on@c.nosp@m.halme.nosp@m.rs.s.nosp@m.e

Date: 2012-02-06

These functions are listed in the doxygen documentation as entries of the file auto_md.h.

Definition in file m_geodetic.cc.

Function Documentation

◆ refellipsoidForAzimuth()

void refellipsoidForAzimuth	(	Vector &	refellipsoid,
		const Numeric &	latitude,
		const Numeric &	azimuth,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: refellipsoidForAzimuth.

Conversion of 3D ellipsoid to 1D curvature radius.

Calculates the curvature radius for the given latitude and azimuth angle, and uses this to set a spherical reference ellipsoid suitable for 1D calculations. The curvature radius is a better local approximation than using the local ellipsoid radius.

The used expression assumes a geodetic latitude, but also latitudes should be OK as using this method anyhow signifies an approximation.

Author: Patrick Eriksson

Parameters

[out]	refellipsoid	WS Output
[in]	latitude	Generic Input
[in]	azimuth	Generic Input

Definition at line 60 of file m_geodetic.cc.

References DEG2RAD, and ConstVectorView::nelem().

Referenced by refellipsoidForAzimuth_g().

◆ refellipsoidOrbitPlane()

void refellipsoidOrbitPlane	(	Vector &	refellipsoid,
		const Numeric &	orbitinc,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: refellipsoidOrbitPlane.

Conversion of 3D ellipsoid to 2D orbit track geometry.

Determines an approximate reference ellipsoid following an orbit track. The new ellipsoid is determined simply, by determining the radius at the maximum latitude and from this value calculate a new new eccentricity. The orbit is specified by giving the orbit inclination (orbitinc), that is normally a value around 100 deg for polar sun-synchronous orbits.