CL_fr_J20002ter

Description

• This function is deprecated.

  Replacement function: CL_fr_convert

• Converts position and (optionally) velocity vectors from EME2000 to the terrestrial ("Earth fixed") reference frame.

  The jacobian of the transformation is optionally computed.

• See Reference frames for more details on the definition of reference frames.

Parameters

cjd:

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

pos_J2000:

position vector relative to EME2000 [m] (3xN or 3x1)

vel_J2000:

(optional) velocity vector relative to EME2000 [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_iers :

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

pos_ter:

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

vel_ter:

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

jacob:

(optional) jacobian of the transformation (6x6xN)

Authors

• CNES - DCT/SB

Bibliography

• 1) IERS Conventions (1996), Dennis D. McCarthy

• 2) Explanatory Supplement to the Astronomical Almanac, Seidelman (1992)

See also

• CL_fr_ter2J2000Mat

• CL_fr_J20002ter

Examples

// Position pos_J2000 = [7000.e3; 0; 0]; cjd = [21010 , 21011]; pos_ter = CL_fr_J20002ter(cjd, pos_J2000); // Position, velocity and jacobian pos_J2000 = [7000.e3; 0; 0]; vel_J2000 = [0; 7000; 0]; cjd = [21010 , 21011]; [pos_ter, vel_ter, jacob] = CL_fr_J20002ter(cjd, [pos_J2000,pos_J2000], [vel_J2000,vel_J2000])