Detailed Description

Defines the class that provides the ability to convert GLONASS to/from UT1 (UTC Greenwich, to distinguish it from UTC(SU)), using data extracted from GLONASS navigation messages. The algorithm is sufficiently different from StdNavTimeOffset as to warrant its own implementation. This is mainly due to the terms of the polynomial being referenced to the time difference in days rather than seconds like the rest of the world.

Definition at line 58 of file GLOCNavUT1TimeOffset.hpp.

#include <GLOCNavUT1TimeOffset.hpp>

Inheritance diagram for gnsstk::GLOCNavUT1TimeOffset:

[legend]

Public Member Functions
NavDataPtr	clone () const override
	Create a deep copy of this object. More...

void	dump (std::ostream &s, DumpDetail dl) const override

void	dumpTerse (std::ostream &s) const

TimeCvtSet	getConversions () const override

bool	getOffset (TimeSystem fromSys, TimeSystem toSys, const CommonTime &when, double &offset) const override

	GLOCNavUT1TimeOffset ()
	Initialize all data to 0. More...

bool	validate () const override

Public Member Functions inherited from gnsstk::TimeOffsetData
std::list< std::string >	compare (const NavDataPtr &right) const override

CommonTime	getNearTime () const override

bool	isSameData (const NavDataPtr &right) const override

	TimeOffsetData ()
	Set the messageType. More...

virtual	~TimeOffsetData ()
	Obligatory virtual destructor. More...

Public Member Functions inherited from gnsstk::NavData
virtual std::string	getClassName () const

std::string	getDumpTime (DumpDetail dl, const CommonTime &t) const

std::string	getDumpTimeHdr (DumpDetail dl) const

std::string	getSignalString () const

bool	getSVN (const SatID &sat, const gnsstk::CommonTime &when, std::string &svn) const

virtual CommonTime	getUserTime () const

	NavData ()
	Initialize internal data fields. More...

Public Attributes
double	B0
	Time bias in seconds. More...

double	B1
	Time drift in s/s. More...

double	B2
	Time drift rate in s/s**2. More...

unsigned	NB
	Day since the most recent leap year-aligned 4 years. More...

CommonTime	refTime
	Reference time for computation. More...

double	UTCTAI
	Leap seconds - not really used. More...

Public Attributes inherited from gnsstk::NavData
NavMessageID	signal
	Source signal identification for this navigation message data. More...

CommonTime	timeStamp

std::string	weekFmt

Additional Inherited Members
Static Public Member Functions inherited from gnsstk::NavData
static gnsstk::SatMetaDataStore *	getSatMetaDataStore ()
	Accessor for python. More...

static void	setSatMetaDataStore (gnsstk::SatMetaDataStore *smds)
	Accessor for python. More...

Static Public Attributes inherited from gnsstk::NavData
static const GNSSTK_EXPORT std::string	dumpTimeFmt
	Time format used for the dump method (Full). More...

static const GNSSTK_EXPORT std::string	dumpTimeFmtBrief
	Time format used for the dump method (Brief). More...

static GNSSTK_EXPORT gnsstk::SatMetaDataStore *	satMetaDataStore = nullptr
	Set this to a valid store to get PRN->SVN translations in dump(). More...

Protected Attributes inherited from gnsstk::NavData
double	msgLenSec

Constructor & Destructor Documentation

◆ GLOCNavUT1TimeOffset()

gnsstk::GLOCNavUT1TimeOffset::GLOCNavUT1TimeOffset ( )

Initialize all data to 0.

Definition at line 47 of file GLOCNavUT1TimeOffset.cpp.

Member Function Documentation

◆ clone()

NavDataPtr gnsstk::GLOCNavUT1TimeOffset::clone ( ) const

inlineoverridevirtual

Create a deep copy of this object.

Implements gnsstk::NavData.

Definition at line 64 of file GLOCNavUT1TimeOffset.hpp.

◆ dump()

void gnsstk::GLOCNavUT1TimeOffset::dump	(	std::ostream &	s,
		DumpDetail	dl
	)		const

overridevirtual

Print the contents of this object in a human-readable format. Uses parameters for GLONASS instead of generalized.

Parameters

[in,out]	s	The stream to write the data to.
[in]	dl	The level of detail the output should contain.

Reimplemented from gnsstk::NavData.

Definition at line 57 of file GLOCNavUT1TimeOffset.cpp.

◆ dumpTerse()

void gnsstk::GLOCNavUT1TimeOffset::dumpTerse ( std::ostream & s ) const

Print the contents of this object in a terse format.

Parameters

[in,out] s The stream to write the data to.

Definition at line 108 of file GLOCNavUT1TimeOffset.cpp.

◆ getConversions()

TimeCvtSet gnsstk::GLOCNavUT1TimeOffset::getConversions ( ) const

overridevirtual

The set of time system conversions this class is capable of making.

Returns: a set of supported time system conversion to/from pairs.

Implements gnsstk::TimeOffsetData.

Definition at line 146 of file GLOCNavUT1TimeOffset.cpp.

◆ getOffset()

bool gnsstk::GLOCNavUT1TimeOffset::getOffset	(	TimeSystem	fromSys,
		TimeSystem	toSys,
		const CommonTime &	when,
		double &	offset
	)		const

overridevirtual

Get the offset, in seconds, to apply to times when converting them from fromSys to toSys.

Parameters

[in]	fromSys	The time system to convert from.
[in]	toSys	The time system to convert to.
[in]	when	The time being converted, in the same time system as fromSys.
[out]	offset	The offset in seconds where when(toSys)=when(fromSys)-offset.

Exceptions

AssertionFailure if when's time system is not fromSys.

Returns: true if an offset is available, false if not.

Implements gnsstk::TimeOffsetData.

Definition at line 124 of file GLOCNavUT1TimeOffset.cpp.

◆ validate()

bool gnsstk::GLOCNavUT1TimeOffset::validate ( ) const

overridevirtual

Checks the contents of this message against known validity rules as defined in the appropriate ICD.

Returns: true if this message is valid according to ICD criteria.

Todo:: add some checks.

Implements gnsstk::NavData.

Definition at line 155 of file GLOCNavUT1TimeOffset.cpp.

Member Data Documentation

◆ B0

double gnsstk::GLOCNavUT1TimeOffset::B0

Time bias in seconds.

Definition at line 103 of file GLOCNavUT1TimeOffset.hpp.

◆ B1

double gnsstk::GLOCNavUT1TimeOffset::B1

Time drift in s/s.

Definition at line 104 of file GLOCNavUT1TimeOffset.hpp.

◆ B2

double gnsstk::GLOCNavUT1TimeOffset::B2

Time drift rate in s/s**2.

Definition at line 105 of file GLOCNavUT1TimeOffset.hpp.

◆ NB

unsigned gnsstk::GLOCNavUT1TimeOffset::NB

Day since the most recent leap year-aligned 4 years.

Definition at line 102 of file GLOCNavUT1TimeOffset.hpp.

◆ refTime

CommonTime gnsstk::GLOCNavUT1TimeOffset::refTime

Reference time for computation.

Definition at line 101 of file GLOCNavUT1TimeOffset.hpp.

◆ UTCTAI

double gnsstk::GLOCNavUT1TimeOffset::UTCTAI

Leap seconds - not really used.

Definition at line 106 of file GLOCNavUT1TimeOffset.hpp.

The documentation for this class was generated from the following files:

Detailed Description

Public Member Functions

Public Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ GLOCNavUT1TimeOffset()

Member Function Documentation

◆ clone()

◆ dump()

◆ dumpTerse()

◆ getConversions()

◆ getOffset()

◆ validate()

Member Data Documentation

◆ B0

◆ B1

◆ B2

◆ NB

◆ refTime

◆ UTCTAI