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CL_fr_ter2J2000

Terrestrial frame to EME2000 (J2000) vector transformation

Calling Sequence

[pos_J2000,[vel_J2000,jacob]] = CL_fr_ter2J2000(cjd,pos_ter,[vel_ter,ut1_utc,xp,yp,dPsi,dEps,conv])

Description

Parameters

cjd:

modified julian day from 1950.0 (UTC) (1xN or 1x1)

pos_ter:

position vector relative to terrestrial frame [m] (3xN or 3x1)

vel_ter:

(optional) velocity vector relative to terrestrial frame [m/s] (3xN or 3x1)

ut1_utc :

(optional) ut1-utc [seconds] (default is 0) (1xN or 1x1)

xp :

(optional) x polar coordinate [radians] (default is 0) (1xN or 1x1)

yp :

(optional) y polar coordinate [radians] (default is 0) (1xN or 1x1)

dPsi :

(optional) Nutation corrections [radians] (default is 0) (1xN or 1x1)

dEps :

(optional) Nutation corrections [radians] (default is 0) (1xN or 1x1)

conv :

(optional) Convention IERS. Only iers 1996 (Lieske/Wahr) is implemented (default is "iers_1996")

pos_J2000:

position vector relative to EME2000 [m] (3xN)

vel_J2000:

(optional) velocity vector relative to EME2000 [m/s] (3xN)

jacob:

(optional) jacobian of the transformation (6x6xN)

Authors

Bibliography

See also

Examples

// Conversion ter to J2000
pos_ter = [ [1000.e3;7078.e3;700.e3] , [7000.e3;1078.e3;1700.e3] ];
cjd = [21010 , 21011];
pos_J2000 = CL_fr_ter2J2000(cjd,pos_ter);
M=CL_fr_ter2J2000Mat(cjd);
pos_J2000_2 = M*pos_ter;

// Conversion ter to J2000
pos_ter = [1000.e3;7078.e3;700.e3];
vel_ter = [4.e3;4.2e3;3.e3];
cjd = 20010;
[pos_J2000,vel_J2000,jacob] = CL_fr_ter2J2000(cjd,pos_ter,vel_ter)
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