coordinates.hpp File Reference

Data Structures
struct	Sofa
struct	XFormData
struct	FrameSwapper

Functions
void	eci2ecef (GTime time, const ERPValues &erpVal, Matrix3d &U, Matrix3d *dU_ptr=nullptr)
void	pos2enu (const VectorPos &pos, double *E)
VectorEnu	ecef2enu (const VectorPos &pos, const VectorEcef &r)
VectorEcef	enu2ecef (const VectorPos &pos, const VectorEnu &e)
	transform local tangental coordinate vector to ecef
Matrix3d	rotBasisMat (Vector3d &eX, Vector3d &eY, Vector3d &eZ)
	Converts coords of frame A (expressed in frame G) into transformation matrix from A to G E.g.
VectorPos	ecef2pos (const VectorEcef &r)
	transform ecef to geodetic postion args : double *r I ecef position {x,y,z} (m) notes : WGS84, ellipsoidal height
VectorEcef	pos2ecef (const VectorPos &pos)
	Transform geodetic postion to ecef.
VectorEcef	body2ecef (const AttStatus &attStatus, const Vector3d &rBody)
	transform vector in body frame to ecef
Vector3d	ecef2body (AttStatus &attStatus, VectorEcef &ecef, MatrixXd *dEdQ_ptr=nullptr)
	transform vector in ecef frame to body

Function Documentation

body2ecef()

VectorEcef body2ecef	(	const AttStatus &	attStatus,
		const Vector3d &	rBody )

transform vector in body frame to ecef

Parameters

attStatus	attitude (unit vectors of the axes of body frame) in ecef frame
rBody	vector in body frame

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ecef2body()

Vector3d ecef2body	(	AttStatus &	attStatus,
		VectorEcef &	ecef,
		MatrixXd *	dEdQ_ptr = nullptr )

transform vector in ecef frame to body

Parameters

attStatus	attitude (unit vectors of the axes of body frame) in ecef frame
ecef	vector in ecef frame

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ecef2enu()

VectorEnu ecef2enu	(	const VectorPos &	pos,
		const VectorEcef &	r )

Parameters

pos	geodetic position {lat,lon} (rad)
r	vector in ecef coordinate {x,y,z}

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ecef2pos()

VectorPos ecef2pos

(

const VectorEcef &

r

)

transform ecef to geodetic postion args : double *r I ecef position {x,y,z} (m) notes : WGS84, ellipsoidal height

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eci2ecef()

void eci2ecef	(	GTime	time,
		const ERPValues &	erpVal,
		Matrix3d &	U,
		Matrix3d *	dU_ptr = nullptr )

Parameters

time	Current time
erpVal	Structure containing the erp values
U	Matrix3d containing the rotation matrix
dU_ptr	Matrix3d containing the time derivative of the rotation matrix

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enu2ecef()

VectorEcef enu2ecef	(	const VectorPos &	pos,
		const VectorEnu &	e )

transform local tangental coordinate vector to ecef

Parameters

pos	geodetic position {lat,lon} (rad)
e	vector in local tangental coordinate {e,n,u}

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pos2ecef()

VectorEcef pos2ecef

(

const VectorPos &

pos

)

Transform geodetic postion to ecef.

Parameters

pos	geodetic position {lat,lon,h} (rad,m)

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pos2enu()

void pos2enu	(	const VectorPos &	pos,
		double *	E )

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rotBasisMat()

Matrix3d rotBasisMat	(	Vector3d &	eX,
		Vector3d &	eY,
		Vector3d &	eZ )

Converts coords of frame A (expressed in frame G) into transformation matrix from A to G E.g.

if eX/eY/eZ are body coordinates (frame A) in ECEF (frame G), matrix will transform from body frame to ECEF frame: ecef = rot * body.

Parameters

eX	X+ unit vector of new coordinates
eY	Y+ unit vector of new coordinates
eZ	Z+ unit vector of new coordinates

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