fr.cnes.sirius.patrius.signalpropagation.iono

Class BentModel

java.lang.Object

fr.cnes.sirius.patrius.signalpropagation.iono.BentModel

All Implemented Interfaces:

IonosphericCorrection

public class BentModel
extends Object
implements IonosphericCorrection

Bent model for the electronic content used in ionospheric corrections. This class was directly lifted from FORTRAN 90 code. For debugging ease reasons, and for lack of knowlegde on the original code, the ported code is as close as possible to the original, which means it's rather unreadable as it is.

Since:

1.3

Version:

$Id$

Author:

Thomas Trapier

See Also:

IonosphericCorrection

Concurrency :

not thread-safe

Constructor Summary

Constructors

Constructor and Description
BentModel(R12Provider r12Provider, SolarActivityDataProvider solarActivity, USKProvider uskProvider, BodyShape earth, Vector3D inStation, Frame inFrameSta, double freq) Constructor for the Bent ionospheric correction model.

Method Summary

Modifier and Type	Method and Description
double	computeElectronicCont(AbsoluteDate date, Vector3D satellite, Frame frameSat) Computation of the electric content between the station and the satellite at a date.
double	computeSignalDelay(AbsoluteDate date, Vector3D satellite, Frame frameSat) Calculates the ionospheric signal delay for the signal path from the position of the transmitter and the receiver and the current date.

Methods inherited from class java.lang.Object

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

Constructor Detail

BentModel

public BentModel(R12Provider r12Provider,
                 SolarActivityDataProvider solarActivity,
                 USKProvider uskProvider,
                 BodyShape earth,
                 Vector3D inStation,
                 Frame inFrameSta,
                 double freq)

Constructor for the Bent ionospheric correction model.

Parameters:

r12Provider - provider for the R12 value

solarActivity - provider for the solar activity

uskProvider - provider for the model data

earth - ther earth body shape

inStation - coordinates of the position of the STATION in the frameSta frame

inFrameSta - frame in witch the STATION coordinates are expressed

freq - measured signal frequency [Hz]

Method Detail

computeSignalDelay

public double computeSignalDelay(AbsoluteDate date,
                                 Vector3D satellite,
                                 Frame frameSat)
                          throws PatriusException,
                                 IOException,
                                 ParseException

Calculates the ionospheric signal delay for the signal path from the position of the transmitter and the receiver and the current date.

Specified by:

computeSignalDelay in interface IonosphericCorrection

Parameters:

date - the current date

satellite - the satellite position

frameSat - the satellite position frame

Returns:

the ionospheric signal delay

Throws:

PatriusException - thrown if computation failed

IOException - thrown if computation failed

ParseException - thrown if computation failed

computeElectronicCont

public double computeElectronicCont(AbsoluteDate date,
                                    Vector3D satellite,
                                    Frame frameSat)
                             throws PatriusException,
                                    IOException,
                                    ParseException

Computation of the electric content between the station and the satellite at a date.

Parameters:

date - current date

satellite - coordinates of the position of the SATELLITE in the frameSta frame

frameSat - frame in witch the SATELLITE coordinates are expressed

Returns:

the electronic content between the station and the satellite at this date.

Throws:

IOException - if an error occur with the inputs

ParseException - if an error occur with the parsing of files

PatriusException - if an error occur with the dates and frames management