EcksteinHechlerPropagatorBuilder.java
- /* Copyright 2002-2016 CS Systèmes d'Information
- * Licensed to CS Systèmes d'Information (CS) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * CS licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.orekit.propagation.conversion;
- import org.orekit.errors.OrekitException;
- import org.orekit.forces.gravity.potential.GravityFieldFactory;
- import org.orekit.forces.gravity.potential.TideSystem;
- import org.orekit.forces.gravity.potential.UnnormalizedSphericalHarmonicsProvider;
- import org.orekit.frames.Frame;
- import org.orekit.orbits.OrbitType;
- import org.orekit.orbits.PositionAngle;
- import org.orekit.propagation.Propagator;
- import org.orekit.propagation.analytical.EcksteinHechlerPropagator;
- import org.orekit.time.AbsoluteDate;
- /** Builder for Eckstein-Hechler propagator.
- * @author Pascal Parraud
- * @since 6.0
- */
- public class EcksteinHechlerPropagatorBuilder extends AbstractPropagatorBuilder {
- /** Provider for un-normalized coefficients. */
- private final UnnormalizedSphericalHarmonicsProvider provider;
- /** Build a new instance.
- * @param frame the frame in which the orbit is propagated
- * (<em>must</em> be a {@link Frame#isPseudoInertial pseudo-inertial frame})
- * @param provider for un-normalized zonal coefficients
- * @deprecated as of 7.1, replaced with {@link #EcksteinHechlerPropagatorBuilder(Frame,
- * UnnormalizedSphericalHarmonicsProvider, OrbitType, PositionAngle)}
- */
- @Deprecated
- public EcksteinHechlerPropagatorBuilder(final Frame frame,
- final UnnormalizedSphericalHarmonicsProvider provider) {
- this(frame, provider, OrbitType.CARTESIAN, PositionAngle.TRUE);
- }
- /** Build a new instance.
- * @param frame the frame in which the orbit is propagated
- * (<em>must</em> be a {@link Frame#isPseudoInertial pseudo-inertial frame})
- * @param provider for un-normalized zonal coefficients
- * @param orbitType orbit type to use
- * @param positionAngle position angle type to use
- * @since 7.1
- */
- public EcksteinHechlerPropagatorBuilder(final Frame frame,
- final UnnormalizedSphericalHarmonicsProvider provider,
- final OrbitType orbitType, final PositionAngle positionAngle) {
- super(frame, provider.getMu(), orbitType, positionAngle);
- this.provider = provider;
- }
- /** Build a new instance.
- * @param frame the frame in which the orbit is propagated
- * (<em>must</em> be a {@link Frame#isPseudoInertial pseudo-inertial frame})
- * @param referenceRadius reference radius of the Earth for the potential model (m)
- * @param mu central attraction coefficient (m³/s²)
- * @param tideSystem tide system
- * @param c20 un-normalized zonal coefficient (about -1.08e-3 for Earth)
- * @param c30 un-normalized zonal coefficient (about +2.53e-6 for Earth)
- * @param c40 un-normalized zonal coefficient (about +1.62e-6 for Earth)
- * @param c50 un-normalized zonal coefficient (about +2.28e-7 for Earth)
- * @param c60 un-normalized zonal coefficient (about -5.41e-7 for Earth)
- * @deprecated as of 7.1, replaced with {@link #EcksteinHechlerPropagatorBuilder(Frame,
- * double, double, TideSystem, double, double, double, double, double, OrbitType, PositionAngle)}
- */
- @Deprecated
- public EcksteinHechlerPropagatorBuilder(final Frame frame,
- final double referenceRadius,
- final double mu,
- final TideSystem tideSystem,
- final double c20,
- final double c30,
- final double c40,
- final double c50,
- final double c60) {
- this(frame, referenceRadius, mu, tideSystem, c20, c30, c40, c50, c60,
- OrbitType.CARTESIAN, PositionAngle.TRUE);
- }
- /** Build a new instance.
- * @param frame the frame in which the orbit is propagated
- * (<em>must</em> be a {@link Frame#isPseudoInertial pseudo-inertial frame})
- * @param referenceRadius reference radius of the Earth for the potential model (m)
- * @param mu central attraction coefficient (m³/s²)
- * @param tideSystem tide system
- * @param c20 un-normalized zonal coefficient (about -1.08e-3 for Earth)
- * @param c30 un-normalized zonal coefficient (about +2.53e-6 for Earth)
- * @param c40 un-normalized zonal coefficient (about +1.62e-6 for Earth)
- * @param c50 un-normalized zonal coefficient (about +2.28e-7 for Earth)
- * @param c60 un-normalized zonal coefficient (about -5.41e-7 for Earth)
- * @param orbitType orbit type to use
- * @param positionAngle position angle type to use
- * @since 7.1
- */
- public EcksteinHechlerPropagatorBuilder(final Frame frame,
- final double referenceRadius,
- final double mu,
- final TideSystem tideSystem,
- final double c20,
- final double c30,
- final double c40,
- final double c50,
- final double c60,
- final OrbitType orbitType,
- final PositionAngle positionAngle) {
- this(frame,
- GravityFieldFactory.getUnnormalizedProvider(referenceRadius, mu, tideSystem,
- new double[][] {
- {
- 0
- }, {
- 0
- }, {
- c20
- }, {
- c30
- }, {
- c40
- }, {
- c50
- }, {
- c60
- }
- }, new double[][] {
- {
- 0
- }, {
- 0
- }, {
- 0
- }, {
- 0
- }, {
- 0
- }, {
- 0
- }, {
- 0
- }
- }),
- orbitType, positionAngle);
- }
- /** {@inheritDoc} */
- public Propagator buildPropagator(final AbsoluteDate date, final double[] parameters)
- throws OrekitException {
- checkParameters(parameters);
- return new EcksteinHechlerPropagator(createInitialOrbit(date, parameters), provider);
- }
- }