Examples
tle = CL_tle_new(); cjd = CL_dat_cal2cjd(2013,1,1); // TREF pos_eci = [7000.e3; 0; 0]; vel_eci = [0; 7000; 0]; tle = CL_tle_update(tle, cjd, pos_eci, vel_eci); // Check result [pos, vel] = CL_tle_genEphem(tle, cjd) |  |  |
Update TLE orbital state
tle2 = CL_tle_update(tle, cjd, pos, vel [, frame, ut1_tref, tt_tref])
Resets the state of a TLE structure using the specified date and (osculating) position and velocity.
In a standard situation, the input position and velocity are converted from the specified reference frame to TEME. The input times are considered to be given in the TREF time scale and are converted to UTC internally. Note that if the frame is not a true equator frame, the transformation may not as accurate as should be as the frame transformation arguments that can be provided are limited to ut1_tref and tt_tref.
It is also possible to give frame a special value: "native". It means that reference frame AND time scale are supposed to be those natively used for TLEs: TEME and UTC repectively. No conversion is performed.
TLE structure (size N)
TLE epoch (modified Julian days from 1950.0, TREF time scale except if frame == "native") (1xN)
Osculating position vector in specified frame (3xN)
Osculating velocity vector relative to specified frame (3xN)
Frame for position and velocity, see above for details. Default is "ECI".
(optional) UT1-TREF [seconds]. Default is %CL_UT1_TREF (1xN or 1x1)
(optional) TT-TREF [seconds]. Default is %CL_TT_TREF. (1xN or 1x1)
CNES - DCT/SB/MS
tle = CL_tle_new(); cjd = CL_dat_cal2cjd(2013,1,1); // TREF pos_eci = [7000.e3; 0; 0]; vel_eci = [0; 7000; 0]; tle = CL_tle_update(tle, cjd, pos_eci, vel_eci); // Check result [pos, vel] = CL_tle_genEphem(tle, cjd) | | |