SGP4

class sorts.propagator.pysgp4.SGP4(settings=None, **kwargs)[source]

Bases: sorts.propagator.base.Propagator

Propagator class implementing the SGP4 propagator.

Frame options are found in the sorts.frames.convert function.

Variables

  • in_frame (str) – String identifying the input frame.

  • out_frame (str) – String identifying the output frame.

Parameters

  • in_frame (str) – String identifying the input frame.

  • out_frame (str) – String identifying the output frame.

Methods

TEME_to_TLE(state, epoch[, B, kepler, tol, …])

Convert osculating orbital elements in TEME to mean elements used in two line element sets (TLE’s).

TEME_to_TLE_OPTIM(state, epoch[, B, kepler, …])

Convert osculating orbital elements in TEME to mean elements used in two line element sets (TLE’s).

__init__([settings])

Initialize self.

convert_time(t, epoch)

Convert input time and epoch variables to astropy.TimeDelta and astropy.Time variables of the correct format and scale.

get_TLE_parameters(line1, line2[, gravity_model])

get_mean_elements(line1, line2[, radians])

Extract the mean elements in SI units (a [m], e [1], inc [deg], raan [deg], aop [deg], mu [deg]), B-parameter (not bstar) and epoch from a two line element pair.

heartbeat(t, state, **kwargs)

Function applied after propagation to time t and state state, before next time step as given in the input time vector to propagate.

propagate(t, state0[, epoch])

Propagate a state

propagate_mean_elements(jd0, jd_f, …)

Propagate sgp4 mean elements.

propagate_tle(t, line1, line2, **kwargs)

Propagate a TLE pair

set(**kwargs)

Attributes

DEFAULT_SETTINGS

in_frame

out_frame