Package org.orekit.propagation.relative.yamanakaankersen

Class FieldYamanakaAnkersenMatrices<T extends CalculusFieldElement<T>>

java.lang.Object
org.orekit.propagation.relative.yamanakaankersen.FieldYamanakaAnkersenMatrices<T>
Type Parameters:
T - Any scalar field.
public class FieldYamanakaAnkersenMatrices<T extends CalculusFieldElement<T>> extends Object
This class stores the 2 matrices (in plane: xz, out of plane: y, in local LVLH CCSDS frame) of the Yamanaka Ankersen equations. Matrices in LVLH CCSDS Frame.
Since:
14.0
Author:
Romain Cuvillon

  • Constructor Details

    • FieldYamanakaAnkersenMatrices

      public FieldYamanakaAnkersenMatrices(T timeSinceEpoch, T targetTheta, FieldMatrix<T> inPlaneMatrix, FieldMatrix<T> outPlaneMatrix)
      Constructor for the state transition matrices given by the Yamanaka-Ankersen equations.
      Parameters:
      timeSinceEpoch - duration in seconds since epoch
      targetTheta - current true anomaly of the target
      inPlaneMatrix - in-plane transition matrix
      outPlaneMatrix - out-plane transition matrix

  • Method Details

    • getTargetTrueAnomaly

      public T getTargetTrueAnomaly()
      Get the true anomaly of the target.
      Returns:
      true anomaly of the target

    • getInPlaneMatrix

      public FieldMatrix<T> getInPlaneMatrix()
      Get the in-plane matrix at current time.
      Returns:
      In-plane matrix at current time

    • getOutPlaneMatrix

      public FieldMatrix<T> getOutPlaneMatrix()
      Get the out of plane matrix at current time.
      Returns:
      out of plane matrix at current time

    • transform

      public TimeStampedFieldPVCoordinates<T> transform(TimeStampedFieldPVCoordinates<T> pvt, T initialTrueAnomaly, T trueAnomaly, T eccentricity, T sma, T mu)
      Transforms the input initial PVT expressed in the target's LVLH CCSDS LOF to the PVT at the time and true anomaly associated encoded in the Yamanaka-Ankersen matrices contained in the object. First transform LOF PV coordinates to ~ coordinates system as presented in the Yamanaka Ankersen paper. Compute actualized coordinates in the ~ system Retransform from transformed frame to LOF to get desired PVCoordinates in LOF.
      Parameters:
      pvt - input initial PVT expressed in the target's LVLH CCSDS LOF
      initialTrueAnomaly - true anomaly of the target Spacecraft at initial time
      trueAnomaly - true anomaly of the target Spacecraft at final time
      eccentricity - eccentricity of the target Orbit
      sma - semi-major axis of the target Orbit
      mu - mu of the target orbit
      Returns:
      PVT at the time encoded in the Yamanaka-Ankersen matrices, expressed in the target's LVLH CCSDS LOF

    • transform

      public FieldPVCoordinates<T> transform(FieldPVCoordinates<T> pv, T initialTrueAnomaly, T trueAnomaly, T eccentricity, T sma, T mu)
      Transforms the input initial PVT expressed in the target's LVLH CCSDS LOF to the PVT at the time and true anomaly associated encoded in the Yamanaka-Ankersen matrices contained in the object. First transform LOF PV coordinates to ~ coordinates system as presented in the Yamanaka Ankersen paper. Compute actualized coordinates in the ~ system Retransform from transformed frame to LOF to get desired PVCoordinates in LOF.
      Parameters:
      pv - input initial PV expressed in the target's LVLH CCSDS LOF
      initialTrueAnomaly - true anomaly of the target Spacecraft at initial time
      trueAnomaly - true anomaly of the target Spacecraft at final time
      eccentricity - eccentricity of the target Orbit
      sma - semi-major axis of the target Orbit
      mu - mu of the target orbit
      Returns:
      PVT at the time encoded in the Yamanaka-Ankersen matrices, expressed in the target's LVLH CCSDS LOF