public class OceanLoading extends Object implements StationDisplacement
This class implements the same model as IERS HARDIP.F program. For a given site, this model uses a set of amplitudes and phases for the 11 main tides (M₂, S₂, N₂, K₂, K₁, O₁, P₁, Q₁, Mf, Mm, and Ssa) in BLQ format as provided by the Bos-Scherneck web site at Onsala Space Observatory. From these elements, additional admittances are derived using spline interpolation based on tides frequencies for a total of 342 tides, including the 11 main tides.
This implementation is a complete rewrite of the original HARDISP.F program developed by Duncan Agnew and copyright 2008 IERS Conventions center. This derived work is not endorsed by the IERS conventions center. What remains from the original program is the model (spline interpolation and coefficients). The code by itself is completely different, using the underlying mathematical library for spline interpolation and the existing Orekit features for nutation arguments, time and time scales handling, tides modeling...
Instances of this class are guaranteed to be immutable
The original HARDISP.F program is distributed with the following notice:
Copyright (C) 2008
IERS Conventions Center
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GroundStation| Constructor and Description |
|---|
OceanLoading(OneAxisEllipsoid earth,
OceanLoadingCoefficients coefficients)
Simple constructor.
|
| Modifier and Type | Method and Description |
|---|---|
Vector3D |
displacement(BodiesElements elements,
Frame earthFrame,
Vector3D referencePoint)
Compute displacement of a ground reference point.
|
public OceanLoading(OneAxisEllipsoid earth, OceanLoadingCoefficients coefficients)
earth - Earth shapecoefficients - coefficients for the considered siteOceanLoadingCoefficientsBLQFactorypublic Vector3D displacement(BodiesElements elements, Frame earthFrame, Vector3D referencePoint)
displacement in interface StationDisplacementelements - elements affecting Earth orientationearthFrame - Earth frame in which reference point is definedreferencePoint - reference point position in earthFramereferencePointCopyright © 2002-2020 CS GROUP. All rights reserved.