GalileoAlmanac.java
/* Copyright 2002-2022 CS GROUP
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* CS licenses this file to You under the Apache License, Version 2.0
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*
* 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;
/**
* Class for Galileo almanac.
*
* @see "European GNSS (Galileo) Open Service, Signal In Space,
* Interface Control Document, Table 75"
*
* @author Bryan Cazabonne
* @since 10.0
*
*/
public class GalileoAlmanac extends AbstractAlmanac implements GNSSOrbitalElements {
/** Nominal inclination (Ref: Galileo ICD - Table 75). */
private static final double I0 = FastMath.toRadians(56.0);
/** Nominal semi-major axis in meters (Ref: Galileo ICD - Table 75). */
private static final double A0 = 29600000;
/** Satellite E5a signal health status. */
private int healthE5a;
/** Satellite E5b signal health status. */
private int healthE5b;
/** Satellite E1-B/C signal health status. */
private int healthE1;
/** Almanac Issue Of Data. */
private int iod;
/**
* Build a new almanac.
*/
public GalileoAlmanac() {
super(GNSSConstants.GALILEO_MU, GNSSConstants.GALILEO_AV, GNSSConstants.GALILEO_WEEK_NB);
}
/**
* Sets the difference between the square root of the semi-major axis
* and the square root of the nominal semi-major axis.
* <p>
* In addition, this method set the value of the Semi-Major Axis.
* </p>
* @param dsqa the value to set
*/
public void setDeltaSqrtA(final double dsqa) {
final double sqrtA = dsqa + FastMath.sqrt(A0);
super.setSma(sqrtA * sqrtA);
}
/**
* Sets the the correction of orbit reference inclination at reference time.
* <p>
* In addition, this method set the value of the reference inclination.
* </p>
* @param dinc correction of orbit reference inclination at reference time in radians
*/
public void setDeltaInc(final double dinc) {
super.setI0(I0 + dinc);
}
/**
* Gets the Issue of Data (IOD).
*
* @return the Issue Of Data
*/
public int getIOD() {
return iod;
}
/**
* Sets the Issue of Data (IOD).
*
* @param iodValue the value to set
*/
public void setIOD(final int iodValue) {
this.iod = iodValue;
}
/**
* Gets the E1-B/C signal health status.
*
* @return the E1-B/C signal health status
*/
public int getHealthE1() {
return healthE1;
}
/**
* Sets the E1-B/C signal health status.
*
* @param healthE1 health status to set
*/
public void setHealthE1(final int healthE1) {
this.healthE1 = healthE1;
}
/**
* Gets the E5a signal health status.
*
* @return the E5a signal health status
*/
public int getHealthE5a() {
return healthE5a;
}
/**
* Sets the E5a signal health status.
*
* @param healthE5a health status to set
*/
public void setHealthE5a(final int healthE5a) {
this.healthE5a = healthE5a;
}
/**
* Gets the E5b signal health status.
*
* @return the E5b signal health status
*/
public int getHealthE5b() {
return healthE5b;
}
/**
* Sets the E5b signal health status.
*
* @param healthE5b health status to set
*/
public void setHealthE5b(final int healthE5b) {
this.healthE5b = healthE5b;
}
}