agi.foundation.navigation.datareaders

(agi.foundation.navigation-2026r1.jar)

Class SP3aHeaderRecord

java.lang.Object

agi.foundation.navigation.datareaders.SP3aHeaderRecord

public class SP3aHeaderRecord
extends Object

The SP3-a ephemeris file header definition.

See Also:

SP3aEphemeris

Constructor Summary

Constructors

Constructor and Description
SP3aHeaderRecord() Initializes a new instance of the SP3-a Ephemeris File Header.

Method Summary

Modifier and Type	Method and Description
ArrayList<Integer>	getAccuracies() Gets the orbital accuracy exponent as listed in the header of the SP3-a file.
String	getAgency() Gets the generating agency from Line 1.
String	getComment() Gets the comment lines from the header of the SP3-a file.
String	getCoordinateSystem() Gets the coordinate system from Line 1.
String	getDataUsedDescriptor() Gets the Data Used Descriptor from Line 1.
double	getEpochInterval() Gets the epoch interval from Line 2.
int	getNumberOfEpochs() Gets the number of epochs listed in this file from Line 1.
int	getNumberOfSats() Gets the number of satellites contained in this file from Line 3.
String	getOrbitType() Gets the orbit type from Line 1.
String	getPositionVelocityFlag() Gets the Position/Velocity Flag from Line 1.
ArrayList<Integer>	getPseudoRandomNumbers() Gets the satellite identifiers as listed in the header of the SP3-a file.
JulianDate	getStartEpoch() Gets the Start epoch from Line 1.
GlobalPositioningSystemDate	getStartEpochGps() Gets the start epoch in GPS time format from Line 2.
double	getStartFractionalDay() Gets the start epoch fractional day from Line 2.
int	getStartModifiedJulianDate() Gets the start epoch modified Julian date from Line 2.
String	getVersion() Gets the version of this file from Line 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

SP3aHeaderRecord

public SP3aHeaderRecord()

Initializes a new instance of the SP3-a Ephemeris File Header.

Method Detail

getVersion

public final String getVersion()

Gets the version of this file from Line 1.

getPositionVelocityFlag

public final String getPositionVelocityFlag()

Gets the Position/Velocity Flag from Line 1.

getStartEpoch

@Nonnull
public final JulianDate getStartEpoch()

Gets the Start epoch from Line 1.

getNumberOfEpochs

public final int getNumberOfEpochs()

Gets the number of epochs listed in this file from Line 1.

getDataUsedDescriptor

public final String getDataUsedDescriptor()

Gets the Data Used Descriptor from Line 1.

getCoordinateSystem

public final String getCoordinateSystem()

Gets the coordinate system from Line 1.

getOrbitType

public final String getOrbitType()

Gets the orbit type from Line 1.

getAgency

public final String getAgency()

Gets the generating agency from Line 1.

getStartEpochGps

@Nonnull
public final GlobalPositioningSystemDate getStartEpochGps()

Gets the start epoch in GPS time format from Line 2.

getEpochInterval

public final double getEpochInterval()

Gets the epoch interval from Line 2.

getStartModifiedJulianDate

public final int getStartModifiedJulianDate()

Gets the start epoch modified Julian date from Line 2.

getStartFractionalDay

public final double getStartFractionalDay()

Gets the start epoch fractional day from Line 2.

getNumberOfSats

public final int getNumberOfSats()

Gets the number of satellites contained in this file from Line 3.

getPseudoRandomNumbers

@Nonnull
public final ArrayList<Integer> getPseudoRandomNumbers()

Gets the satellite identifiers as listed in the header of the SP3-a file.

getAccuracies

@Nonnull
public final ArrayList<Integer> getAccuracies()

Gets the orbital accuracy exponent as listed in the header of the SP3-a file. The accuracy is interpreted as 2**exponent meters. An exponent value of 0 indicates the accuracy is unknown. The accuracies are ordered identically to the PRN ordering in PseudoRandomNumbers (get).

getComment

public final String getComment()

Gets the comment lines from the header of the SP3-a file.