12.0.2

Version 12.0.2 is a patch release of Orekit. The main changes are:

• Change visibility of InertiaAxis and Inertia constructors to public.
• Allow Rinex V4 observation files to have either "ANTENNA: DELTA X/Y/Z" or "ANTENNA: DELTA H/E/N" header line.
• Field versions of Frame.getStaticTransformTo don't allow null dates (they never did, but the javadoc wrongly stated this was allowed).
• Removed blank lines in SP3 file generation.
• Fixed forbidden SBAS System Time in SP3 files.
• Fixed wrong key for Beidou System Time in SP3 files.
• Fixed wrong parsing of some time systems in SP3 files.
• Fixed incorrect transmitter location in BistaticRange measurement.
• Fix regression in Ephemeris with interpolationPoints=1.
• Fixed loading of UTC (now thread safe).
• Fix DSST Jacobian setup.

This version depends on Hipparchus 3.0

12.0.1

Version 12.0.1 is a patch release of Orekit. The main changes are:

• Fixed parsing of SP3 files with partly missing standard deviations.
• Added missing contributions for 12.0 in changes.xml.
• Fixed exceptions occurring in EOP prediction with ill chosen fitting parameters.
• Fixed regression in computation speed when using Ephemeris.
• Added checkstyle configuration for Intellij in contributing.md.
• Fixed infinite loop when using specific date with CssiSpaceWeatherData.
• SpacecraftStateInterpolator now takes into account the extrapolation threshold given at construction.
• Updated JavaDoc for references to the yields method where applicable.
• Fixed bad dates in ephemeris when reset-at-end is set to false.
• Fixed covariance computation with ephemeris propagation.
• AberrationModifier shall be used with user defined DataContext.
• Fixed bad caching of the ocean tides model.

This version depends on Hipparchus 3.0

12.0

Version 12.0 is a major release of Orekit. The main changes are:

• Introduction of the SSA package which contains probability of collision computation methods (Laas, Alfano, Alfriend, Patera, and Chan)

• Many features related to GNSS products

  • Refactoring of RINEX files and support of versions 2, 3.05, and 4.0
  • Support of SINEX differential code bias files
  • Writing of GNSS observation files
  • RTCM orbit and clock correction messages for GPS, GLONASS, and Galileo
  • Improvement in SP3 parsing and introduction of SP3 writer
  • Splicing and interpolation of SP3 files
  • Decoding RF-link GNSS messages
  • Custom satellite system allowed in GNSS

• Huge improvements in spacecraft state interpolation & introduction of covariance interpolation and blending

• Propagation

  • DSST: addition of the Zeis model for J2-squared mean perturbation contribution
  • Multi-satellite: addition of a step normalizer
  • Custom attitude provider when parsing ephemeris
  • Adaptable max checking interval for event detection
  • Central body flatness now taken into account for eclipse detector and solar radiation pressure
  • Panel dependent coefficients in BoxAndSolarArraySpacecraft

• Orbit Determination

  • Introduction of date-based parameter drivers for orbit determination
  • Unscented Kalman filter now available for all types of propagators
  • Addition of Gauss Angles-only initial orbit determination
  • Az/El based Initial Orbit Determination

• Frames & attitude providers

  • Earth Orientation Parameters prediction
  • Building of ITRF frame directly from EOP
  • Torque free attitude provider
  • Interface LOF to allow custom Local Orbital Frames
  • Magnetic-field-aligned Local Orbital Frame
  • Encounter LOF frames for collision prediction

• New supported file formats

  • Earth Orientation Parameters C04 files
  • Satellite Tool Kit (STK) ephemeris files
  • CCSDS ADM v2 (Attitude Determination Message)
  • Writer for CCSDS OCM files (Orbit Comprehensive Message)

• Measurements

  • Support for FDOA measurements (Frequency Difference Of Arrival)
  • Modifiers for aberration of light in RADEC (telescope) measurements
  • Full parsing of IRLS CRD files (laser ranging measurements files)
  • Measurements generation and evaluation without derivatives for better performance
  • Station displacements due to plate tectonics
  • Phase center variations for on-board antenna modifiers

• Maneuvers

  • Refactoring of the package
  • Fielded version of impulse maneuvers
  • Profile based (polynomial segments) thrust propulsion model
  • Introduction of non-euclidean norms to ΔV and mass consumption models

• Miscellaneous:

  • Static transform for {Field} elements
  • Change of TimeInterpolable by TimeInterpolator
  • Change of PositionAngle by PositionAngleType
  • Field class for StateCovariance
  • Python keywords (e.g. init) are now forbidden for method naming

This version depends on Hipparchus 3.0

11.3.3

Version 11.3.3 is a patch release of Orekit.
The main changes are:

• Improved performances for (Field)DSSTPropagatorTest.
• Fixed DSST tesseral force model short period terms update when order of gravity potential is lower or equal to 3.
• Fixed DSST osculating performance issues with high degree and order of geopotential.
• Fixed thread safety issue in CoefficientFactory.
• Fixed crash of DSST during propagation with osculating and 3rd body.

This version depends on Hipparchus 2.3

11.3.2

Version 11.3.2 is a patch release of Orekit. The main changes are:

• Fixed GLONASS parser to set ToC and Date directly to ingested date instead of rounded GPS date.
• Fixed numerical issue in CartesianOrbit#shiftedBy().
• Fixed convergence of unscented kalman filter by using measurement covariance.
• Added missing Onsala Space Observatory BLQ file formats.
• Fixed ambiguous propagation type for numerical orbit propagators.
• Removed reference to old Orekit mailing list in LocalOrbitalFrame.
• Fixed theoretical evaluation of AngularRaDec when the reference frame is not Earth-centered.
• Fixed wrong wrapper in deprecated KeplerianOrbit's and FieldKeplerianOrbit's methods for anomaly conversions.
• Improved documentation of glonass propagators.
• Fixed HolmesFeatherstoneAttractionModel error with a degree 0 gravity field.

This version depends on Hipparchus 2.3

11.3.1

Version 11.3.1 is a patch release of Orekit. The main changes are:

• Fixed JavaDoc in IsotropicRadiationClassicalConvention class.
• Fixed week number parsing in Rinex Navigation files.
• Fixed discontinuity issues in Brouwer-Lyddane orbit propagator.
• Improved documentation of StateCovariance class.

11.3

Version 11.3 is a minor release of Orekit. The main changes are:

• Added shiftedBy method for covariance matrix.
• Added new class to handle covariance matrix.
• Use Véronique Dehant table for station displacements due to tides.
• Avoid losing last measurements in Kalman filter.
• Accept new fields in CCSDS CDM files.
• Added covariance transformation between local orbital frames.
• Moved Keplerian anomaly conversion methods to KeplerianAnomalyUtility and FieldKeplerianAnomalyUtility, deprecating the methods in KeplerianOrbit and FieldKeplerianOrbit. Incorporated Gooding and Odell algorithm for solving the hyperbolic Kepler equation.
• Added Unscented Semi-analytical Kalman Estimator.
• Added Unscented Kalman Estimator.
• Fixed documentation in BulletinAFilesLoader.
• Fixed rejection of irregular TDM PATH field.
• Added ephemeris based estimation.
• Added method to get measurement types.
• Improved AbsoluteDate.equals method with management of past and future infinity.
• Added additional state provider for covariance matrix propagation.
• Migrated all tests from JUnit4 to JUnit5.
• Added method to convert to/from an Orekit frame and a CCSDS Frame.
• Added ExtremumApproachEventDetector.
• Added constructor to AggregateBoundedPropagator for more control over which propagator is used.
• Added waypoint interpolation of PVCoordinatesProvider.
• Added method to round DateTimeComponents for custom formatting.

This version depends on Hipparchus 2.3.

11.2.1

Version 11.2.1 is a patch release of Orekit. The main changes are:

• Fixed documentation issue, RTNCovariance constructor initializes the covariance matrix with NaN.
• Fixed wrong parsing of Area_DRG and Area_SRP from CDM.
• Fixed N/A value not recognized for field MANEUVERABLE when parsing CDMs.
• Fixed negative offset when shifting an AbsoluteDate.
• Fixed internal error on DateEvent capture events in v11.1.2.

11.2

Version 11.2 is a minor release of Orekit. The main changes are:

• Added possibility to custom analytical mean parameters conversion.
• Added Hatch filters for smoothing of GNSS measurements.
• Allowed parsing of SP3 files without EOF key.
• Added writing of velocity record in CPF file writers.
• Added support for loading EOP from Sinex files.
• Raised a too stringent convergence threshold in Eackstein-Hechler model.
• Added a way to compute mean parameters in Brouwer-Lyddane model.
• Added bistatic range measurement.
• Added a way to compute mean parameters in Eckstein-Hechler model.
• Updated CCSDS ODM to latest draft version (pink book).
• Prevents zero max check intervals in maneuvers triggers detectors.
• Added detection of non-positive max check interval and threshold.
• Allow additional derivatives providers to update main state derivatives.
• Fixed indexing error when estimating a subset of orbital parameters.
• Don't loose additional derivatives when generating ephemeris.
• Fixed unexpected behavior of two tests in OrekitMessagesTest.
• Added support for parsing and writing CDM files in both KVN and XML formats.
• Added support for ITRF-2020.
• Added TDOA and bistatic range rate measurements.
• Added init method in {Field}AdditionalStateProvider.
• Added J2-contribution for relativistic clock correction.
• Allow creating Geoid without default data context.
• Added data loaders for Space Environment's JB2008 data.
• Added static method to create a BodyFacade from a CenterName.
• Added Frame.getStaticTransformTo(...) and supporting methods to improve performance.

This version depends on Hipparchus 2.1

11.1.2

Version 11.1.2 is a patch release of Orekit. The main changes are:

• Fixed missing tags in XML generation by EphemerisWriter.
• Fixed rollover in CRD parser.
• Fixed NaNs when constructing Keplerian orbit from PV computed from KeplerianOrbit.
• Fixed ephemeris generation using PropagatorParallelizer.
• Fixed event bracketing problem induced by numerical noise at end of search interval.
• Fixed ephemeris generation with several derivatives providers.
• Fixed wrong implementation of NTW LOF frame.
• Fixed eD and eY equation in ECOM2 model.
• Fixed unmanaged comment in OMM.
• Fixed unmanaged units in OMM.
• Fix StreamingOemWriter in ITRF and without optional fields.
• Fix StreamingOemWriter without acceleration.
• Fixed non-bracketing issue when RESET_STATE slightly moves an event at the start of a step and another regular event happens in the first half of the same step

This version depends on Hipparchus 2.1