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celestlab >> DEPRECATED > CL_cw_ballisticPropa

CL_cw_ballisticPropa

Ballistic propagation of a chaser relatively to a target - DEPRECATED

Calling Sequence

[t, rel_pos_vel] = CL_cw_ballisticPropa(t_ini, rel_pos_vel_ini, alt, ...
t_end, delta_t [,ballistic_coef_chaser,ballistic_coef_target,er,mu])

Description

Parameters

t_ini:

Initial time [seconds] (1x1)

rel_pos_vel_ini:

Initial position and velocity vector of chaser in target's LVLH frame [X;Y;Z;Vx;Vy;Vz] [m,m/s] (6x1)

alt:

Altitude of target. [m]

t_end:

Final time. [s] (1x1)

delta_t:

(optional) Time step. Default: 100. [s] (1x1)

ballistic_coef_chaser:

(optional) Ballistic coefficient of chaser : S*cx/m S=equivalent drag surface, cx = drag coefficient, m = mass [m^2/kg] (default is 0)

ballistic_coef_target:

(optional) Ballistic coefficient of target : S*cx/m S=equivalent drag surface, cx = drag coefficient, m = mass [m^2/kg] (default is 0)

er:

(optional) Equatorial radius. Default: %CL_eqRad. [m] (1x1)

mu:

(optional) Gravitational constant. Default: %CL_mu. [m^3/s^2] (1x1)

t:

Computation times [seconds] (1xN)

rel_pos_vel:

Position and velocity vectors of chaser in target's LVLH frame at corresponding times [X;Y;Z;Vx;Vy;Vz] [m,m/s] (6xN)

Authors

See also

Bibliography

Examples

t_ini = 0;
// target and chaser : same initial position and velocity
rel_pos_vel_ini = [0; 0; 0; 0; 0; 0] ;
alt = 450.e3;
ballistic_coef_chaser = 100 * 1 / 20.e3;
ballistic_coef_target = 200 * 1 / 400.e3;
t_end = 4 * 3600; // 4 hours of ballistic propagation
delta_t = 100; // 100 seconds time step
[t,rel_pos_vel] = CL_cw_ballisticPropa(t_ini, ..
rel_pos_vel_ini, alt, t_end, delta_t, ..
ballistic_coef_chaser, ballistic_coef_target)

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