org.orekit.forces.radiation
Class KnockeRiesModel

java.lang.Object
  org.orekit.forces.radiation.KnockeRiesModel

All Implemented Interfaces:

IEmissivityModel

public final class KnockeRiesModel
extends Object
implements IEmissivityModel

Since:

1.2

Version:

$Id: KnockeRiesModel.java 8379 2013-04-05 10:10:49Z CardosoP $

Author:

ClaudeD

Description :

Earth emissivity of the Knocke-Ries model (albedo and infrared)

Concurrency :

immutable

Field Summary

static double	A0 coefficient a0 of Knocke-Ries model.
static double	A2 coefficient a2 of Knocke-Ries model.
static double	C1AL coefficient c1al of Knocke-Ries model.
static double	C1IR coefficient c1ir of Knocke-Ries model.
static double	D0 coefficient a0 of Knocke-Ries model.
static double	DAYSYEAR duration of a year (in days).
static double	E2 coefficient a2 of Knocke-Ries model.
static AbsoluteDate	REFDAY reference day of Knocke-Ries model.

Constructor Summary

KnockeRiesModel()

Method Summary

double[]

getEmissivity(AbsoluteDate cdate, double latitude, double longitude) Computing of the emissivities of earth (albedo and infrared) based of the Knocke-Reis model (the longitude is not used in this model)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

A0

public static final double A0

coefficient a0 of Knocke-Ries model.

See Also:

Constant Field Values

A2

public static final double A2

coefficient a2 of Knocke-Ries model.

See Also:

Constant Field Values

C1AL

public static final double C1AL

coefficient c1al of Knocke-Ries model.

See Also:

Constant Field Values

D0

public static final double D0

coefficient a0 of Knocke-Ries model.

See Also:

Constant Field Values

E2

public static final double E2

coefficient a2 of Knocke-Ries model.

See Also:

Constant Field Values

C1IR

public static final double C1IR

coefficient c1ir of Knocke-Ries model.

See Also:

Constant Field Values

REFDAY

public static final AbsoluteDate REFDAY

reference day of Knocke-Ries model.

DAYSYEAR

public static final double DAYSYEAR

duration of a year (in days).

See Also:

Constant Field Values

Constructor Detail

KnockeRiesModel

public KnockeRiesModel()

Method Detail

getEmissivity

public double[] getEmissivity(AbsoluteDate cdate,
                              double latitude,
                              double longitude)

Computing of the emissivities of earth (albedo and infrared) based of the Knocke-Reis model (the longitude is not used in this model)

See Obelix Reference manuel (NT-07-1)

Specified by:

getEmissivity in interface IEmissivityModel

Parameters:

cdate - current date

latitude - (rad) geocentric latitude. The angle between the radius (from centre to the point on the surface) and the equatorial plane

longitude - (rad) geocentric longitude

Returns:

albedo emissivity (emissivity[0]) and infrared emissivity (emissivity[1])

Since:

1.2