from_ijk_to_lvlh Interface

public interface from_ijk_to_lvlh

Conversion from IJK to LVLH

Calls

interface~~from_ijk_to_lvlh~~CallsGraph interface~from_ijk_to_lvlh from_ijk_to_lvlh proc~from_ijk_to_lvlh_mat from_ijk_to_lvlh_mat interface~from_ijk_to_lvlh->proc~from_ijk_to_lvlh_mat proc~from_ijk_to_lvlh_rv from_ijk_to_lvlh_rv interface~from_ijk_to_lvlh->proc~from_ijk_to_lvlh_rv proc~cross cross proc~from_ijk_to_lvlh_mat->proc~cross proc~uhat_dot uhat_dot proc~from_ijk_to_lvlh_mat->proc~uhat_dot proc~unit unit proc~from_ijk_to_lvlh_mat->proc~unit proc~from_ijk_to_frame_rv from_ijk_to_frame_rv proc~from_ijk_to_lvlh_rv->proc~from_ijk_to_frame_rv

Called by

interface~~from_ijk_to_lvlh~~CalledByGraph interface~from_ijk_to_lvlh from_ijk_to_lvlh proc~from_lvlh_to_ijk_mat from_lvlh_to_ijk_mat proc~from_lvlh_to_ijk_mat->interface~from_ijk_to_lvlh proc~relative_motion_test relative_motion_test proc~relative_motion_test->interface~from_ijk_to_lvlh interface~from_lvlh_to_ijk from_lvlh_to_ijk interface~from_lvlh_to_ijk->proc~from_lvlh_to_ijk_mat

Module Procedures

private subroutine from_ijk_to_lvlh_mat(mu, r, v, a, c, cdot)

Author
Jacob Williams
Date
4/19/2014

Compute the transformation matrices to convert IJK to LVLH.

Read more…

Arguments

Type IntentOptional Attributes Name
real(kind=wp), intent(in) :: mu

gravitational parameter [km^3/s^2]
real(kind=wp), intent(in), dimension(3) :: r

position vector of target [km]
real(kind=wp), intent(in), dimension(3) :: v

velocity vector of target [km/s]
real(kind=wp), intent(in), optional, dimension(3) :: a

acceleration vector of target [km/s^2] (if not present, then a torque-free force model is assumed)
real(kind=wp), intent(out), dimension(3,3) :: c

C transformation matrix
real(kind=wp), intent(out), optional, dimension(3,3) :: cdot

CDOT transformation matrix

private subroutine from_ijk_to_lvlh_rv(mu, rt_ijk, vt_ijk, r_ijk, v_ijk, dr_lvlh, dv_lvlh)

Author
Jacob Williams
Date
8/23/2014

Transform a position (and optionally velocity) vector from IJK to LVLH.

Arguments

Type IntentOptional Attributes Name
real(kind=wp), intent(in) :: mu

gravitational parameter [km^3/s^2]
real(kind=wp), intent(in), dimension(3) :: rt_ijk

Target IJK absolute position vector [km]
real(kind=wp), intent(in), dimension(3) :: vt_ijk

Target IJK absolute position vector [km]
real(kind=wp), intent(in), dimension(3) :: r_ijk

Chaser IJK absolute position vector [km]
real(kind=wp), intent(in), dimension(3) :: v_ijk

Chaser IJK absolute position vector [km]
real(kind=wp), intent(out), dimension(3) :: dr_lvlh

Chaser LVLH position vector relative to target [km]
real(kind=wp), intent(out), optional, dimension(3) :: dv_lvlh

Chaser LVLH position vector relative to target [km]