Name

CL_ex_meanLyddane — Mean parameters of the Lydanne orbit extrapolation model

Calling Sequence

   [mean_kep] = CL_ex_meanLyddane(osc_kep[,er[,mu,[zonals]]])
   
   

Description

  • Computes the mean keplerian parameters mean_kep given the osculatory keplerian parameters osc_kep.
  • Warnings :

    - This function does not work for inclinations close (0.0022918 deg) to the critical inclinations (63.43494882 deg and 116.5650512 deg)

    - This function does not work for eccentricities higher than 0.9

  • Last update : 28/3/2008

Parameters

osc_kep:

osculatory keplerian parameters [sma,ecc,inc,pom,gom,anm]' [m],[rad] (6xN)

er:

(optional) equatorial radius [m] (default is %CL_eqRad)

mu:

(optional) geocentric gravitational constant [m^3/s^2] (default value is %CL_mu)

zonals:

(optional) vector of zonals coefficients J1 to Jn (troncated to J5) to be used (default is %CL_j1jn(1:5)) (1 x N)

mean_kep:

mean keplerian parameters [sma,ecc,inc,pom,gom,anm]' [m],[rad] (6xN)

Authors

CNES - DCT/SB

See also

CL_ex_lyddane, CL_ex_lyddaneMan

Bibliography

1 CNES - MSLIB FORTRAN 90, Volume E (me_lyddane_mean)

Examples

osc_kep = [42166712,7.9e-3,CL_deg2rad(97.2),CL_deg2rad(89),CL_deg2rad(125),CL_deg2rad(0)]';
osc_cirequa = CL_oe_kep2cirEqua(osc_kep);
[mean_cirequa] = CL_ex_meanLyddane(osc_cirequa);
mean_kep1 = CL_oe_cirEqua2kep(mean_cirequa)
[mean_kep] = CL_ex_meanLyddane(osc_kep)

See 'CelestLab > Demos > EXTRAPOLATION > lyddane' for more examples