Sgp4PropagatorMeanElementsAtEpoch Method (JulianDate, Cartesian, Cartesian) |
Produces an element set from a given
Cartesian state at a given time. Since SGP4 uses
perturbations, the classical orbital elements produced by
ModifiedKeplerianElements may
not correspond to the specified position and velocity when propagated as SGP4 elements. This method
performs a simple iteration to correct the classical elements so that the resulting SGP4 elements will
represent the specified position and velocity at the given time as accurately as possible. This will
assume that the
BStar value is zero.
Namespace:
AGI.Foundation.Propagators
Assembly:
AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 24.3.420.0 (24.3.420.0)
Syntax public static Sgp4Elements MeanElementsAtEpoch(
JulianDate date,
Cartesian posInTEME,
Cartesian velInTEME
)
Public Shared Function MeanElementsAtEpoch (
date As JulianDate,
posInTEME As Cartesian,
velInTEME As Cartesian
) As Sgp4Elements
public:
static Sgp4Elements^ MeanElementsAtEpoch(
JulianDate date,
Cartesian posInTEME,
Cartesian velInTEME
)
static member MeanElementsAtEpoch :
date : JulianDate *
posInTEME : Cartesian *
velInTEME : Cartesian -> Sgp4Elements
Parameters
- date
- Type: AGI.Foundation.TimeJulianDate
The epoch of the state. - posInTEME
- Type: AGI.Foundation.CoordinatesCartesian
The position in the TrueEquatorMeanEquinoxFrame. - velInTEME
- Type: AGI.Foundation.CoordinatesCartesian
The velocity in the TrueEquatorMeanEquinoxFrame.
Return Value
Type:
Sgp4ElementsThe mean SGP4 elements which will produce the given state when evaluated at the given time.
See Also