org.orekit.frames
Interface EOPHistory

All Superinterfaces:

java.lang.Iterable<TimeStamped>

All Known Implementing Classes:

AbstractEOPHistory, EOP1980History, EOP2000History

public interface EOPHistory
extends java.lang.Iterable<TimeStamped>

Interface for retrieving Earth Orientation Parameters history throughout a large time range.

Version:

$Revision: 3000 $ $Date: 2010-01-04 18:19:35 +0100 (lun. 04 janv. 2010) $

Author:

Luc Maisonobe

Method Summary

AbsoluteDate	getEndDate() Get the date of the last available Earth Orientation Parameters.
double	getLOD(AbsoluteDate date) Get the LoD (Length of Day) value.
AbsoluteDate	getStartDate() Get the date of the first available Earth Orientation Parameters.
double	getUT1MinusUTC(AbsoluteDate date) Get the UT1-UTC value.

Methods inherited from interface java.lang.Iterable

iterator

Method Detail

getStartDate

AbsoluteDate getStartDate()

Get the date of the first available Earth Orientation Parameters.

Returns:

the start date of the available data

getEndDate

AbsoluteDate getEndDate()

Get the date of the last available Earth Orientation Parameters.

Returns:

the end date of the available data

getUT1MinusUTC

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)

getLOD

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)