Package org.orekit.tutorials.utils

Class NdmUtils

java.lang.Object

org.orekit.tutorials.utils.NdmUtils

public class NdmUtils
extends Object

Utility class for parsing and generating CCSDS NDM files.

Author:

Pascal Parraud, Bryan Cazabonne

Field Summary

Fields

Modifier and Type	Field	Description
static String	DEFAULT_ORIGINATOR	Default file originator.
static double	DEFAULT_VERSION	Default version for CCSDS files.

Method Summary

Modifier and Type	Method	Description
static org.orekit.files.ccsds.ndm.odm.CartesianCovariance	createCartesianCovariance(org.orekit.time.AbsoluteDate epoch, org.orekit.frames.Frame frame, org.hipparchus.linear.RealMatrix matrix)	Creates a CartesianCovariance data block.
static org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata	createCommonMetadata(org.orekit.files.ccsds.definitions.CenterName centerName, String objectName, String objectId, org.orekit.frames.Frame referenceFrame)	Creates the common meta data.
static org.orekit.files.ccsds.ndm.odm.OdmHeader	createHeader()	Creates a header for a NDM.
static org.orekit.files.ccsds.ndm.odm.KeplerianElements	createKeplerianElements(org.orekit.orbits.Orbit orbIn)	Creates a KeplerianElements data block from a orbit.
static List<org.orekit.files.ccsds.section.Segment<org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata,org.orekit.files.ccsds.ndm.odm.opm.OpmData>>	createOpmSegments(org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata metadata, org.orekit.files.ccsds.ndm.odm.opm.OpmData data)	Creates the segments for an OPM.
static org.orekit.files.ccsds.ndm.odm.StateVector	createStateVector(org.orekit.utils.TimeStampedPVCoordinates pv)	Creates a StateVector data block from PV coordinates.
static org.orekit.files.ccsds.ndm.odm.opm.Opm	parseOPM(double mu, double mass, File inputFile)	Parses an OPM to a file.
static void	writeOPM(org.orekit.files.ccsds.ndm.odm.opm.OpmWriter writer, org.orekit.files.ccsds.ndm.odm.opm.Opm opm, File outputFile)	Writes an OPM to a file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_ORIGINATOR

public static final String DEFAULT_ORIGINATOR

Default file originator.

See Also:

Constant Field Values

DEFAULT_VERSION

public static final double DEFAULT_VERSION

Default version for CCSDS files.

See Also:

Constant Field Values

Method Detail

createCartesianCovariance

public static org.orekit.files.ccsds.ndm.odm.CartesianCovariance createCartesianCovariance(org.orekit.time.AbsoluteDate epoch,
                                                                                           org.orekit.frames.Frame frame,
                                                                                           org.hipparchus.linear.RealMatrix matrix)

Creates a CartesianCovariance data block.

Parameters:

epoch - the epoch of the covariance

frame - the expression frame of the covariance

matrix - the covariance matrix (expected to be 6x6)

Returns:

the CartesianCovariance

createStateVector

public static org.orekit.files.ccsds.ndm.odm.StateVector createStateVector(org.orekit.utils.TimeStampedPVCoordinates pv)

Creates a StateVector data block from PV coordinates.

Parameters:

pv - the PV coordinates to get elements from

Returns:

the StateVector

createKeplerianElements

public static org.orekit.files.ccsds.ndm.odm.KeplerianElements createKeplerianElements(org.orekit.orbits.Orbit orbIn)

Creates a KeplerianElements data block from a orbit.

Parameters:

orbIn - the orbit to get elements from

Returns:

the KeplerianElements for an OPM

createHeader

public static org.orekit.files.ccsds.ndm.odm.OdmHeader createHeader()

Creates a header for a NDM.

Returns:

the header for the message

createCommonMetadata

public static org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata createCommonMetadata(org.orekit.files.ccsds.definitions.CenterName centerName,
                                                                                    String objectName,
                                                                                    String objectId,
                                                                                    org.orekit.frames.Frame referenceFrame)

Creates the common meta data.

Parameters:

centerName - center name

objectName - spacecraft name

objectId - object identifier ("YYYY-NNNP" see CCSDS format)

referenceFrame - reference frame

Returns:

the common meta data

createOpmSegments

public static List<org.orekit.files.ccsds.section.Segment<org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata,org.orekit.files.ccsds.ndm.odm.opm.OpmData>> createOpmSegments(org.orekit.files.ccsds.ndm.odm.OdmCommonMetadata metadata,
                                                                                                                                                                                org.orekit.files.ccsds.ndm.odm.opm.OpmData data)

Creates the segments for an OPM.

Parameters:

metadata - the metadata

data - the OPM data

Returns:

the OPM segments

writeOPM

public static void writeOPM(org.orekit.files.ccsds.ndm.odm.opm.OpmWriter writer,
                            org.orekit.files.ccsds.ndm.odm.opm.Opm opm,
                            File outputFile)

Writes an OPM to a file.

Parameters:

writer - the OPM writer

opm - the OPM to write

outputFile - the file to write to

parseOPM

public static org.orekit.files.ccsds.ndm.odm.opm.Opm parseOPM(double mu,
                                                              double mass,
                                                              File inputFile)

Parses an OPM to a file.

Parameters:

mu - central attraction coefficient

mass - spacecraft mass

inputFile - the input file

Returns:

the parsed OPM file