CL_op_orbGapLof

Description

• Transforms gaps in orbital elements into gaps in position and velocity in the specified local orbital frame.

  The available calculation methods are:

  - f, f0, f1: use of linearized expressions (See CL_op_orbGapLofMat for details)

  - c: Numerical computation (no explicit formulas), valid for any orbit type and any local frame

  Notes:

  - Relative motion is not available yet.

• See Local frames for more details on the definition of local frames.

  See Orbital elements for more details on orbital elements.

Parameters

type_oe:

(string) Type of orbital elements (1x1)

oe:

Reference orbital elements (6xN or 6x1)

doe:

Gaps in orbital elements (6xN or 6x1)

loc_frame:

(string) Name of local orbital frame (1x1)

meth:

(string, optional) Method used: "f", "f1", "f0" or "c". Default is "c"

motion:

(optional, string) "abs" = absolute motion, "rel" = relative motion. Default is "abs"

mu :

(optional) Gravitational constant [m^3/s^2]. Default value is %CL_mu

dpos:

Gaps in position, components in local frame. [m] (3xN)

dvel:

Gaps in (inertial) velocity, components in local frame. [m/s] (3xN)

Authors

• CNES - DCT/SB

Bibliography

• 1) Casotto S, Position and velocity perturbation in the orbital frame in terms of classical elements perturbation, 1991.

See also

• CL_op_orbGapLofMat

• CL_fr_locOrbMat

Examples

// Reference orbital elements (circular type) cir = [7000.e3; 1.e-5; 1.e-3; 1; 2; 3]; // Increments in orbital elements dcir = [100; 5.e-6; 8.e-6; 2.e-5; 5.e-5; 8.e-5]; // Formula, order 0 [dpos, dvel] = CL_op_orbGapLof("cir", cir, dcir, "qsw", meth = "f0") // Numerical [dpos, dvel] = CL_op_orbGapLof("cir", cir, dcir, "qsw")