AbstractAlmanac.java
/* Copyright 2002-2022 CS GROUP
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* this work for additional information regarding copyright ownership.
* CS licenses this file to You under the Apache License, Version 2.0
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* 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
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package org.orekit.propagation.analytical.gnss.data;
import org.hipparchus.util.FastMath;
/**
* Base class for GNSS almanacs.
* @author Pascal Parraud
* @since 11.0
*/
public abstract class AbstractAlmanac extends CommonGnssData {
/**
* Constructor.
* @param mu Earth's universal gravitational parameter
* @param angularVelocity mean angular velocity of the Earth for the GNSS model
* @param weekNumber number of weeks in the GNSS cycle
*/
public AbstractAlmanac(final double mu,
final double angularVelocity,
final int weekNumber) {
super(mu, angularVelocity, weekNumber);
}
/**
* Getter for the mean motion.
* @return the mean motion
*/
public double getMeanMotion() {
final double absA = FastMath.abs(getSma());
return FastMath.sqrt(getMu() / absA) / absA;
}
/**
* Getter for the rate of inclination angle.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the rate of inclination angle in rad/s
*/
public double getIDot() {
return 0.0;
}
/**
* Getter for the Cuc parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Cuc parameter
*/
public double getCuc() {
return 0.0;
}
/**
* Getter for the Cus parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Cus parameter
*/
public double getCus() {
return 0.0;
}
/**
* Getter for the Crc parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Crc parameter
*/
public double getCrc() {
return 0.0;
}
/**
* Getter for the Crs parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Crs parameter
*/
public double getCrs() {
return 0.0;
}
/**
* Getter for the Cic parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Cic parameter
*/
public double getCic() {
return 0.0;
}
/**
* Getter for the Cis parameter.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Cis parameter
*/
public double getCis() {
return 0.0;
}
/**
* Getter for the Drift Rate Correction Coefficient.
* <p>
* By default, not contained in a GNSS almanac
* </p>
* @return the Drift Rate Correction Coefficient (s/s²).
*/
public double getAf2() {
return 0.0;
}
}