Package org.orekit.files.ccsds.ndm.odm

Class CartesianCovariance

java.lang.Object
org.orekit.files.ccsds.section.CommentsContainer
org.orekit.files.ccsds.ndm.odm.CartesianCovariance
All Implemented Interfaces:
Data, Section
public class CartesianCovariance extends CommentsContainer implements Data
Container for OPM/OMM/OCM Cartesian covariance matrix.

Beware that the Orekit getters and setters all rely on SI units. The parsers and writers take care of converting these SI units into CCSDS mandatory units. The Unit class provides useful fromSi and toSI methods in case the callers already use CCSDS units instead of the API SI units. The general-purpose Unit class (without an 's') and the CCSDS-specific Units class (with an 's') also provide some predefined units. These predefined units and the fromSi and toSI conversion methods are indeed what the parsers and writers use for the conversions.

Since:
6.1
Author:
sports

  • Constructor Details

    • CartesianCovariance

      public CartesianCovariance(Supplier<FrameFacade> defaultFrameSupplier, CcsdsFrameMapper frameMapper)
      Create an empty data set.
      Parameters:
      defaultFrameSupplier - supplier for default reference frame if no frame is specified in the CCSDS message
      frameMapper - for creating a Frame.
      Since:
      13.1.5

  • Method Details

    • validate

      public void validate(double version)
      Check is all mandatory entries have been initialized.

      This method should throw an exception if some mandatory entries are missing or not compatible with version number.

      Specified by:
      validate in interface Section
      Overrides:
      validate in class CommentsContainer
      Parameters:
      version - format version

    • getEpoch

      public AbsoluteDate getEpoch()
      Get matrix epoch.
      Returns:
      matrix epoch

    • setEpoch

      public void setEpoch(AbsoluteDate epoch)
      Set matrix epoch.
      Parameters:
      epoch - matrix epoch

    • getReferenceFrame

      public FrameFacade getReferenceFrame()
      Get the reference frame.
      Returns:
      The reference frame specified by the COV_REF_FRAME keyword or inherited from metadata

    • setReferenceFrame

      public void setReferenceFrame(FrameFacade referenceFrame)
      Set the reference frame in which data are given.
      Parameters:
      referenceFrame - the reference frame to be set

    • getFrameMapper

      public CcsdsFrameMapper getFrameMapper()
      Get the mapping between a CCSDS frame and a Frame.
      Returns:
      the frame mapper.
      Since:
      13.1.5

    • getFrame

      public Frame getFrame()
      Get the frame in which this covariance matrix is defined. Note that only the orientation of the returned frame is significant, the position of the returned frame is irrelevant and should be ignored.
      Returns:
      Orekit frame for this covariance matrix.
      Since:
      13.1.5
      See Also:

    • getCovarianceMatrix

      public RealMatrix getCovarianceMatrix()
      Get the Position/Velocity covariance matrix.
      Returns:
      the Position/Velocity covariance matrix

    • setCovarianceMatrixEntry

      public void setCovarianceMatrixEntry(int j, int k, double entry)
      Set an entry in the Position/Velocity covariance matrix.

      Both m(j, k) and m(k, j) are set.

      Parameters:
      j - row index (must be between 0 and 5 (inclusive)
      k - column index (must be between 0 and 5 (inclusive)
      entry - value of the matrix entry