CL_plot_ephem

Description

• Plots the ground track in longitude and latitude corresponding to the trajectory given in cartesian coordinates.

  The plot x-axis and y-axis are respectively the (spherical) longitude and latitude in degrees.

  These longitude and latitude are obtained from pos_car by: [lon; lat; r] = CL_co_car2sph(pos_car).

• Note:

  Only one graphical entity is created.

  Call gce() to get it and possibly change graphical properties.

Parameters

pos_car:

Positions in cartesian coordinates: [X;Y;Z] (3xN)

win_id:

(optional) Figure Id - Id of the current window if omitted.

color_id:

(optional) Color index - Default is 2.

tick_steps:

(optional) Steps of the grid in longitude and latitude in degrees (2x1), or [] (automatic). Default: [].

data_bounds:

(optional) Definition of the view area: [longmin, latmin; longmax, latmax] in degrees. Default is [-180, -90; 180, 90].

thickness:

(optional) Line thickness. Default is 1.

Authors

• CNES - DCT/SB

See also

• CL_plot_earthMap

Examples

t0 = 21915; // initial time kep_t0 = [7070.e3; 0.001; CL_deg2rad(98); 0; 0; 0]; // orbit parameters step = 30 / 86400; // propagation step t = t0:step:t0+1; kep_t = CL_ex_secularJ2(t0, kep_t0, t); // orbit propagation pos_eci = CL_oe_kep2car(kep_t); // inertial position pos_ecf = CL_fr_convert("ECI", "ECF", t, pos_eci); // position in rotating frame scf(); CL_plot_ephem(pos_ecf);