EOPHistory (ORbit Extrapolation KIT 9.0 API)

java.lang.Object
- org.orekit.frames.EOPHistory

All Implemented Interfaces:

Serializable
```
public class EOPHistory
extends Object
implements Serializable
```
This class loads any kind of Earth Orientation Parameter data throughout a large time range.

Author:

Pascal Parraud

See Also:

Serialized Form

Constructor Summary

Constructors
Modifier Constructor and Description

protected EOPHistory(IERSConventions conventions, Collection<EOPEntry> data, boolean simpleEOP)
Simple constructor.

Constructors
Modifier	Constructor and Description
`protected`	`EOPHistory(IERSConventions conventions, Collection<EOPEntry> data, boolean simpleEOP)` Simple constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`checkEOPContinuity(double maxGap)` Check Earth orientation parameters continuity.
`IERSConventions`	`getConventions()` Get the IERS conventions to which these EOP apply.
`AbsoluteDate`	`getEndDate()` Get the date of the last available Earth Orientation Parameters.
`double[]`	`getEquinoxNutationCorrection(AbsoluteDate date)` Get the correction to the nutation parameters for equinox-based paradigm.
`<T extends RealFieldElement<T>> T[]`	`getEquinoxNutationCorrection(FieldAbsoluteDate<T> date)` Get the correction to the nutation parameters for equinox-based paradigm.
`double`	`getLOD(AbsoluteDate date)` Get the LoD (Length of Day) value.
`<T extends RealFieldElement<T>> T`	`getLOD(FieldAbsoluteDate<T> date)` Get the LoD (Length of Day) value.
`protected Stream<EOPEntry>`	`getNeighbors(AbsoluteDate central)` Get the entries surrounding a central date.
`EOPHistory`	`getNonInterpolatingEOPHistory()` Get non-interpolating version of the instance.
`double[]`	`getNonRotatinOriginNutationCorrection(AbsoluteDate date)` Get the correction to the nutation parameters for Non-Rotating Origin paradigm.
`<T extends RealFieldElement<T>> T[]`	`getNonRotatinOriginNutationCorrection(FieldAbsoluteDate<T> date)` Get the correction to the nutation parameters for Non-Rotating Origin paradigm.
`PoleCorrection`	`getPoleCorrection(AbsoluteDate date)` Get the pole IERS Reference Pole correction.
`<T extends RealFieldElement<T>> FieldPoleCorrection<T>`	`getPoleCorrection(FieldAbsoluteDate<T> date)` Get the pole IERS Reference Pole correction.
`AbsoluteDate`	`getStartDate()` Get the date of the first available Earth Orientation Parameters.
`double`	`getUT1MinusUTC(AbsoluteDate date)` Get the UT1-UTC value.
`<T extends RealFieldElement<T>> T`	`getUT1MinusUTC(FieldAbsoluteDate<T> date)` Get the UT1-UTC value.
`protected boolean`	`hasDataFor(AbsoluteDate date)` Check if the cache has data for the given date using `getStartDate()` and `getEndDate()`.
`boolean`	`usesInterpolation()` Check if the instance uses interpolation on tidal corrections.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EOPHistory
```
protected EOPHistory(IERSConventions conventions,
                     Collection<EOPEntry> data,
                     boolean simpleEOP)
              throws OrekitException
```
    Simple constructor.
    
    Parameters:
    
    conventions - IERS conventions to which EOP refers
    
    data - the EOP data to use
    
    simpleEOP - if true, tidal effects are ignored when interpolating EOP
    
    Throws:
    
    OrekitException - if tidal correction model cannot be loaded
- Method Detail
  - getNonInterpolatingEOPHistory
```
public EOPHistory getNonInterpolatingEOPHistory()
                                         throws OrekitException
```
    Get non-interpolating version of the instance.
    
    Returns:
    
    non-interpolatig version of the instance
    
    Throws:
    
    OrekitException - if tidal correction model cannot be loaded
  - usesInterpolation
```
public boolean usesInterpolation()
```
    Check if the instance uses interpolation on tidal corrections.
    
    Returns:
    
    true if the instance uses interpolation on tidal corrections
  - getConventions
```
public IERSConventions getConventions()
```
    Get the IERS conventions to which these EOP apply.
    
    Returns:
    
    IERS conventions to which these EOP apply
  - getStartDate
```
public AbsoluteDate getStartDate()
```
    Get the date of the first available Earth Orientation Parameters.
    
    Returns:
    
    the start date of the available data
  - getEndDate
```
public AbsoluteDate getEndDate()
```
    Get the date of the last available Earth Orientation Parameters.
    
    Returns:
    
    the end date of the available data
  - getUT1MinusUTC
```
public double getUT1MinusUTC(AbsoluteDate date)
```
    Get the UT1-UTC value.
    The data provided comes from the IERS files. It is smoothed data.
    
    Parameters:
    
    date - date at which the value is desired
    
    Returns:
    
    UT1-UTC in seconds (0 if date is outside covered range)
  - getUT1MinusUTC
```
public <T extends RealFieldElement<T>> T getUT1MinusUTC(FieldAbsoluteDate<T> date)
```
    Get the UT1-UTC value.
    The data provided comes from the IERS files. It is smoothed data.
    
    Type Parameters:
    
    T - type of the field elements
    
    Parameters:
    
    date - date at which the value is desired
    
    Returns:
    
    UT1-UTC in seconds (0 if date is outside covered range)
    
    Since:
    
    9.0
  - getNeighbors
```
protected Stream<EOPEntry> getNeighbors(AbsoluteDate central)
                                 throws TimeStampedCacheException
```
    Get the entries surrounding a central date.
    See hasDataFor(AbsoluteDate) to determine if the cache has data for central without throwing an exception.
    
    Parameters:
    
    central - central date
    
    Returns:
    
    array of cached entries surrounding specified date
    
    Throws:
    
    TimeStampedCacheException - if EOP data cannot be retrieved
  - getLOD
```
public double getLOD(AbsoluteDate date)
```
    Get the LoD (Length of Day) value.
    The data provided comes from the IERS files. It is smoothed data.
    
    Parameters:
    
    date - date at which the value is desired
    
    Returns:
    
    LoD in seconds (0 if date is outside covered range)
  - getLOD
```
public <T extends RealFieldElement<T>> T getLOD(FieldAbsoluteDate<T> date)
```
    Get the LoD (Length of Day) value.
    The data provided comes from the IERS files. It is smoothed data.
    
    Type Parameters:
    
    T - type of the filed elements
    
    Parameters:
    
    date - date at which the value is desired
    
    Returns:
    
    LoD in seconds (0 if date is outside covered range)
    
    Since:
    
    9.0
  - getPoleCorrection
```
public PoleCorrection getPoleCorrection(AbsoluteDate date)
```
    Get the pole IERS Reference Pole correction.
    The data provided comes from the IERS files. It is smoothed data.
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    pole correction (PoleCorrection.NULL_CORRECTION if date is outside covered range)
  - getPoleCorrection
```
public <T extends RealFieldElement<T>> FieldPoleCorrection<T> getPoleCorrection(FieldAbsoluteDate<T> date)
```
    Get the pole IERS Reference Pole correction.
    The data provided comes from the IERS files. It is smoothed data.
    
    Type Parameters:
    
    T - type of the field elements
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    pole correction (PoleCorrection.NULL_CORRECTION if date is outside covered range)
  - getEquinoxNutationCorrection
```
public double[] getEquinoxNutationCorrection(AbsoluteDate date)
```
    Get the correction to the nutation parameters for equinox-based paradigm.
    The data provided comes from the IERS files. It is smoothed data.
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    nutation correction in longitude ΔΨ and in obliquity Δε (zero if date is outside covered range)
  - getEquinoxNutationCorrection
```
public <T extends RealFieldElement<T>> T[] getEquinoxNutationCorrection(FieldAbsoluteDate<T> date)
```
    Get the correction to the nutation parameters for equinox-based paradigm.
    The data provided comes from the IERS files. It is smoothed data.
    
    Type Parameters:
    
    T - type of the field elements
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    nutation correction in longitude ΔΨ and in obliquity Δε (zero if date is outside covered range)
  - getNonRotatinOriginNutationCorrection
```
public double[] getNonRotatinOriginNutationCorrection(AbsoluteDate date)
```
    Get the correction to the nutation parameters for Non-Rotating Origin paradigm.
    The data provided comes from the IERS files. It is smoothed data.
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    nutation correction in Celestial Intermediat Pole coordinates δX and δY (zero if date is outside covered range)
  - getNonRotatinOriginNutationCorrection
```
public <T extends RealFieldElement<T>> T[] getNonRotatinOriginNutationCorrection(FieldAbsoluteDate<T> date)
```
    Get the correction to the nutation parameters for Non-Rotating Origin paradigm.
    The data provided comes from the IERS files. It is smoothed data.
    
    Type Parameters:
    
    T - type of the filed elements
    
    Parameters:
    
    date - date at which the correction is desired
    
    Returns:
    
    nutation correction in Celestial Intermediat Pole coordinates δX and δY (zero if date is outside covered range)
  - checkEOPContinuity
```
public void checkEOPContinuity(double maxGap)
                        throws OrekitException
```
    Check Earth orientation parameters continuity.
    
    Parameters:
    
    maxGap - maximal allowed gap between entries (in seconds)
    
    Throws:
    
    OrekitException - if there are holes in the data sequence
  - hasDataFor
```
protected boolean hasDataFor(AbsoluteDate date)
```
    Check if the cache has data for the given date using getStartDate() and getEndDate().
    
    Parameters:
    
    date - the requested date
    
    Returns:
    
    true if the cache has data for the requested date, false otherwise.

Class EOPHistory

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

EOPHistory

Method Detail

getNonInterpolatingEOPHistory

usesInterpolation

getConventions

getStartDate

getEndDate

getUT1MinusUTC

getUT1MinusUTC

getNeighbors

getLOD

getLOD

getPoleCorrection

getPoleCorrection

getEquinoxNutationCorrection

getEquinoxNutationCorrection

getNonRotatinOriginNutationCorrection

getNonRotatinOriginNutationCorrection

checkEOPContinuity

hasDataFor