Package org.orekit.estimation.measurements

Class QuadraticClockModel

java.lang.Object

org.orekit.estimation.measurements.QuadraticClockModel

All Implemented Interfaces:

ClockModel

public class QuadraticClockModel
extends Object
implements ClockModel

Quadratic clock model.

Since:

12.1

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
QuadraticClockModel(AbsoluteDate referenceDate, double a0, double a1, double a2)	Simple constructor.
QuadraticClockModel(ParameterDriver a0, ParameterDriver a1, ParameterDriver a2)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
ClockOffset	getOffset(AbsoluteDate date)	Get the clock offset at date.
<T extends CalculusFieldElement<T>> FieldClockOffset<T>	getOffset(FieldAbsoluteDate<T> date)	Get the clock offset at date.
AbsoluteDate	getValidityEnd()	Get validity end.
AbsoluteDate	getValidityStart()	Get validity start.
QuadraticFieldClockModel<Gradient>	toGradientModel(int freeParameters, Map<String,Integer> indices, AbsoluteDate date)	Convert to gradient model.

Methods inherited from class java.lang.Object

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

Constructor Detail

QuadraticClockModel

public QuadraticClockModel(AbsoluteDate referenceDate,
                           double a0,
                           double a1,
                           double a2)

Simple constructor.

Parameters:

referenceDate - reference date

a0 - constant term

a1 - linear term

a2 - quadratic term

QuadraticClockModel

public QuadraticClockModel(ParameterDriver a0,
                           ParameterDriver a1,
                           ParameterDriver a2)

Simple constructor.

Parameters:

a0 - constant term

a1 - linear term

a2 - quadratic term

Method Detail

getValidityStart

public AbsoluteDate getValidityStart()

Get validity start.

Specified by:

getValidityStart in interface ClockModel

Returns:

model validity start

getValidityEnd

public AbsoluteDate getValidityEnd()

Get validity end.

Specified by:

getValidityEnd in interface ClockModel

Returns:

model validity end

getOffset

public ClockOffset getOffset(AbsoluteDate date)

Get the clock offset at date.

Specified by:

getOffset in interface ClockModel

Parameters:

date - date at which offset is requested

Returns:

clock offset at specified date

getOffset

public <T extends CalculusFieldElement<T>> FieldClockOffset<T> getOffset(FieldAbsoluteDate<T> date)

Get the clock offset at date.

Specified by:

getOffset in interface ClockModel

Type Parameters:

T - type of the field elements

Parameters:

date - date at which offset is requested

Returns:

clock offset at specified date

toGradientModel

public QuadraticFieldClockModel<Gradient> toGradientModel(int freeParameters,
                                                          Map<String,Integer> indices,
                                                          AbsoluteDate date)

Convert to gradient model.

Parameters:

freeParameters - total number of free parameters in the gradient

indices - indices of the differentiation parameters in derivatives computations, must be span name and not driver name

date - date at which model must be valid

Returns:

converted clock model