Admin : Page créée avec « public class ParametersConversions { public static void main(String[] args) throws PatriusException, IOException, ParseException, URISyn... »

2020-08-17T09:01:04Z

Page créée avec « <syntaxhighlight lang="java"> public class ParametersConversions { public static void main(String[] args) throws PatriusException, IOException, ParseException, URISyn... »

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<syntaxhighlight lang="java">
public class ParametersConversions {

public static void main(String[] args) throws PatriusException, IOException, ParseException, URISyntaxException {

// Patrius Dataset initialization (needed for example to get the UTC time)
PatriusDataset.addResourcesFromPatriusDataset() ;

// Constants that will be used for conversions
final double REQ = Constants.WGS84_EARTH_EQUATORIAL_RADIUS;
final double MU = Constants.WGS84_EARTH_MU;

// Initialization of keplerian parameters
final double dga = REQ + 250.e3;
final double exc = 0.;
final double inc = FastMath.toRadians(45.);
final double gom = FastMath.toRadians(10.);
final double pom = FastMath.toRadians(0.);
final double ano = FastMath.toRadians(180.);
final KeplerianParameters kep = new KeplerianParameters(dga, exc, inc, pom, gom, ano, PositionAngle.MEAN, MU);

// Same in circular parameters
final CircularParameters cir1 = new CircularParameters(dga, exc*FastMath.cos(pom), exc*FastMath.sin(pom),
inc, gom, pom+ano, PositionAngle.MEAN, MU);
// Same in circular parameters but coming from conversion
final CircularParameters cir2 = kep.getCircularParameters();

// Display of potential differences
System.out.println("TEST CIRCULAR PARAMETERS ...");
System.out.println("Delta dga = "+(cir2.getA() - cir1.getA()));
System.out.println("Delta ex = "+(cir2.getCircularEx() - cir1.getCircularEx()));
System.out.println("Delta ey = "+(cir2.getCircularEy() - cir1.getCircularEy()));
System.out.println("Delta inc = "+(cir2.getI() - cir1.getI()));
System.out.println("Delta gom = "+(cir2.getRightAscensionOfAscendingNode() - cir1.getRightAscensionOfAscendingNode()));
System.out.println("Delta pso = "+(cir2.getAlpha(PositionAngle.MEAN) - cir1.getAlpha(PositionAngle.MEAN)));

// Same in equatorial parameters
final EquatorialParameters equ1 = new EquatorialParameters(dga, exc, pom+gom,
2.*FastMath.sin(inc/2.)*FastMath.cos(gom), 2.*FastMath.sin(inc/2.)*FastMath.sin(gom), ano, PositionAngle.MEAN, MU);
// Same in equatorial parameters but coming from conversion
final EquatorialParameters equ2 = kep.getEquatorialParameters();

// Display of potential differences
System.out.println("TEST EQUATORIAL PARAMETERS ...");
System.out.println("Delta dga = "+(equ2.getA() - equ1.getA()));
System.out.println("Delta exc = "+(equ2.getE() - equ1.getE()));
System.out.println("Delta pom = "+(equ2.getPomega() - equ1.getPomega()));
System.out.println("Delta ix = "+(equ2.getIx() - equ1.getIx()));
System.out.println("Delta iy = "+(equ2.getIy() - equ1.getIy()));
System.out.println("Delta ano = "+(equ2.getAnomaly(PositionAngle.MEAN) - equ1.getAnomaly(PositionAngle.MEAN)));

// Same in equinoctial parameters
final EquinoctialParameters eqx1 = new EquinoctialParameters(dga, exc*FastMath.cos(pom+gom), exc*FastMath.sin(pom+gom),
FastMath.tan(inc/2.)*FastMath.cos(gom), FastMath.tan(inc/2.)*FastMath.sin(gom), ano+pom+gom, PositionAngle.MEAN, MU);
// Same in equinoctial parameters but coming from conversion
final EquinoctialParameters eqx2 = kep.getEquinoctialParameters();

// Display of potential differences
System.out.println("TEST EQUINOCTIAL PARAMETERS ...");
System.out.println("Delta dga = "+(eqx2.getA() - eqx1.getA()));
System.out.println("Delta ex = "+(eqx2.getEquinoctialEx() - eqx1.getEquinoctialEx()));
System.out.println("Delta ey = "+(eqx2.getEquinoctialEy() - eqx1.getEquinoctialEy()));
System.out.println("Delta hx = "+(eqx2.getHx() - eqx1.getHx()));
System.out.println("Delta hy = "+(eqx2.getHy() - eqx1.getHy()));
System.out.println("Delta lon = "+(eqx2.getL(PositionAngle.MEAN) - eqx1.getL(PositionAngle.MEAN)));

final double rpe = dga*(1.-exc);
final double rap = dga*(1.+exc);

// Same in apsis radius parameters
final ApsisRadiusParameters apr1 = new ApsisRadiusParameters(rpe, rap, inc, pom, gom, ano, PositionAngle.MEAN, MU);
// Same in apsis radius parameters but coming from conversion
final ApsisRadiusParameters apr2 = kep.getApsisRadiusParameters();

// Display of potential differences
System.out.println("TEST APSIS RADIUS PARAMETERS ...");
System.out.println("Delta rpe = "+(apr2.getPeriapsis() - apr1.getPeriapsis()));
System.out.println("Delta rap = "+(apr2.getApoapsis() - apr1.getApoapsis()));
System.out.println("Delta inc = "+(apr2.getI() - apr1.getI()));
System.out.println("Delta pom = "+(apr2.getPerigeeArgument() - apr1.getPerigeeArgument()));
System.out.println("Delta gom = "+(apr2.getRightAscensionOfAscendingNode() - apr1.getRightAscensionOfAscendingNode()));
System.out.println("Delta ano = "+(apr2.getAnomaly(PositionAngle.MEAN) - apr1.getAnomaly(PositionAngle.MEAN)));

// Same in apsis altitude
final ApsisAltitudeParameters apa1 = new ApsisAltitudeParameters(rpe-REQ, rap-REQ, inc, pom, gom, ano, PositionAngle.MEAN, MU, REQ);
// Same in apsis altitude parameters but coming from conversion
final ApsisAltitudeParameters apa2 = kep.getApsisAltitudeParameters(REQ);

// Display of potential differences
System.out.println("TEST APSIS ALTITUDE PARAMETERS ...");
System.out.println("Delta hpe = "+(apa2.getPeriapsisAltitude() - apa1.getPeriapsisAltitude()));
System.out.println("Delta hap = "+(apa2.getApoapsisAltitude() - apa1.getApoapsisAltitude()));
System.out.println("Delta inc = "+(apa2.getI() - apa1.getI()));
System.out.println("Delta pom = "+(apa2.getPerigeeArgument() - apa1.getPerigeeArgument()));
System.out.println("Delta gom = "+(apa2.getRightAscensionOfAscendingNode() - apa1.getRightAscensionOfAscendingNode()));
System.out.println("Delta ano = "+(apa2.getAnomaly(PositionAngle.MEAN) - apa1.getAnomaly(PositionAngle.MEAN)));

}

}
</syntaxhighlight>

ParametersConversions 4.5.1 - Historique des versions

Admin : Page créée avec « public class ParametersConversions { public static void main(String[] args) throws PatriusException, IOException, ParseException, URISyn... »

Admin : Page créée avec « public class ParametersConversions { public static void main(String[] args) throws PatriusException, IOException, ParseException, URISyn... »