fr.cnes.sirius.patrius.signalpropagation.troposphere

Interface TroposphericCorrection

All Superinterfaces:

Serializable

All Known Implementing Classes:

AzoulayModel, FixedDelayModel, MariniMurrayModel, SaastamoinenModel

public interface TroposphericCorrection
extends Serializable

Defines a tropospheric model, used to calculate the signal delay for the signal path imposed to electro-magnetic signals between an orbital satellite and a ground station.

Author:

Thomas Neidhart

Field Summary

Fields

Modifier and Type	Field and Description
static double	ABSOLUTE_ZERO Absolute zero for temperatures.
static double	H0 Standard reference altitude.
static double	P0 Standard reference pressure.
static double	RH0 Standard reference humidity rate.
static double	T0 Standard reference temperature.

Method Summary

Modifier and Type	Method and Description
double	computeSignalDelay(double elevation) Calculates the tropospheric signal delay for the signal path from a ground station to a satellite.
static double[]	computeStandardValues(double altitude) Computes standard model values [T, P, R] for provided altitude with standard reference values [T0, P0, RH0] provided by tropospheric models : T = temperature [K] - T0 = 18 degree Celsius P = pressure [Pa] - P0 = 101325 Pa RH = humidity rate [%] in [0, 1] - RH0 = 50%
static double[]	computeStandardValues(double t0, double p0, double rh0, double h0, double altitude) Computes standard model values [T, P, RH] for provided altitude given reference values [T0, P0, RH0 H0] with: T = temperature [K] P = pressure [Pa] RH = humidity rate [%] in [0, 1]

Field Detail

T0

static final double T0

Standard reference temperature.

See Also:

Constant Field Values

P0

static final double P0

Standard reference pressure.

See Also:

Constant Field Values

RH0

static final double RH0

Standard reference humidity rate.

See Also:

Constant Field Values

H0

static final double H0

Standard reference altitude.

See Also:

Constant Field Values

ABSOLUTE_ZERO

static final double ABSOLUTE_ZERO

Absolute zero for temperatures.

See Also:

Constant Field Values

Method Detail

computeSignalDelay

double computeSignalDelay(double elevation)

Calculates the tropospheric signal delay for the signal path from a ground station to a satellite.

Parameters:

elevation - the elevation of the satellite [rad]

Returns:

the signal delay due to the troposphere [s]

computeStandardValues

static double[] computeStandardValues(double t0,
                                      double p0,
                                      double rh0,
                                      double h0,
                                      double altitude)

Computes standard model values [T, P, RH] for provided altitude given reference values [T0, P0, RH0 H0] with:

• T = temperature [K]
• P = pressure [Pa]
• RH = humidity rate [%] in [0, 1]

Parameters:

t0 - reference temperature [K]

p0 - reference pressure [Pa]

rh0 - reference humidity rate [%] in [0, 1]

h0 - reference altitude [m]

altitude - altitude for which values [T, P, RH] should be returned

Returns:

[T, P, RH] values

computeStandardValues

static double[] computeStandardValues(double altitude)

Computes standard model values [T, P, R] for provided altitude with standard reference values [T0, P0, RH0] provided by tropospheric models :

• T = temperature [K] - T0 = 18 degree Celsius
• P = pressure [Pa] - P0 = 101325 Pa
• RH = humidity rate [%] in [0, 1] - RH0 = 50%

Parameters:

altitude - altitude for which values [T, P, RH] should be returned

Returns:

standard model values [T, P, RH]