Detailed Description

Class containing data elements unique to GPS LNav ephemerides.

Definition at line 51 of file GPSLNavEph.hpp.

#include <GPSLNavEph.hpp>

Inheritance diagram for gnsstk::GPSLNavEph:

[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	dumpSVStatus (std::ostream &s) const override

void	fixFit ()

CommonTime	getUserTime () const override

	GPSLNavEph ()
	Sets the nav message type and all other data members to 0. More...

bool	validate () const override

Public Member Functions inherited from gnsstk::GPSLNavData
	GPSLNavData ()
	Initialize data members. More...

Public Member Functions inherited from gnsstk::OrbitDataGPS
bool	getXvt (const CommonTime &when, Xvt &xvt, const ObsID &oid=ObsID()) override

	OrbitDataGPS ()

double	svRelativity (const CommonTime &when) const override

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

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

virtual void	dumpClock (std::ostream &s) const

virtual void	dumpHarmonics (std::ostream &s) const

virtual void	dumpOrbit (std::ostream &s) const

virtual std::string	getDataType () const

CommonTime	getNearTime () const override

bool	getXvt (const CommonTime &when, const EllipsoidModel &ell, Xvt &xvt, const ObsID &oid=ObsID())

bool	isSameData (const NavDataPtr &right) const override

	OrbitDataKepler ()
	Initialize all data members to 0. More...

double	svClockBias (const CommonTime &when) const

double	svClockDrift (const CommonTime &when) const

virtual double	svRelativity (const CommonTime &when, const EllipsoidModel &ell) const

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

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

Public Attributes
bool	alert2
	Alert flag from SF2 HOW. More...

bool	alert3
	Alert flag from SF3 HOW. More...

long	aodo
	Age of Data Offset in seconds (-1=uninitialized). More...

bool	asFlag2
	Anti-spoof flag from SF2 HOW. More...

bool	asFlag3
	Anti-spoof flag from SF3 HOW. More...

GPSLNavL2Codes	codesL2
	Code on L2 in-phase component. More...

uint8_t	fitIntFlag
	Fit interval flag from subframe 2. More...

uint8_t	healthBits
	6 SV health bits from subframe 1, word 3. More...

uint16_t	iodc
	Issue Of Data-Clock for the ephemeris. More...

uint16_t	iode
	Issue Of Data-Ephemeris. More...

bool	isf2
	Integrity status flag from subframe 2. More...

bool	isf3
	Integrity status flag from subframe 3. More...

bool	L2Pdata

uint32_t	pre2
	The TLM preamble from word 1 of subframe 2. More...

uint32_t	pre3
	The TLM preamble from word 1 of subframe 3. More...

double	tgd
	Ionospheric group delay in seconds. More...

uint32_t	tlm2
	The TLM message from word 1 of subframe 2. More...

uint32_t	tlm3
	The TLM message from word 1 of subframe 3. More...

uint8_t	uraIndex
	4-bit URA index from subframe 1, word 3. More...

CommonTime	xmit2
	Transmit time for subframe 2. More...

CommonTime	xmit3
	Transmit time for subframe 3. More...

Public Attributes inherited from gnsstk::GPSLNavData
bool	alert
	Alert flag from HOW. More...

bool	asFlag
	Anti-spoof flag from HOW. More...

bool	isf
	Integrity status flag. More...

uint32_t	pre
	The TLM preamble from word 1 of the subframe. More...

uint32_t	tlm
	The TLM message from word 1 of the subframe. More...

Public Attributes inherited from gnsstk::OrbitDataKepler
double	A
	Semi-major axis (m) More...

double	Adot
	Rate of semi-major axis (m/sec) More...

double	af0
	SV clock error (sec) More...

double	af1
	SV clock drift (sec/sec) More...

double	af2
	SV clock drift rate (sec/sec**2) More...

double	Ahalf
	Square Root of semi-major axis (m**.5) More...

double	Cic
	Cosine inclination (rad) More...

double	Cis
	Sine inclination (rad) More...

double	Crc
	Cosine radius (m) More...

double	Crs
	Sine radius (m) More...

double	Cuc
	Cosine latitude (rad) More...

double	Cus
	Sine latitude (rad) More...

double	dn
	Correction to mean motion (rad/sec) More...

double	dndot
	Rate of correction to mean motion (rad/sec/sec) More...

double	ecc
	Eccentricity. More...

RefFrameSys	frame

SVHealth	health
	SV health status. More...

double	i0
	Inclination (rad) More...

double	idot
	Rate of inclination angle (rad/sec) More...

double	M0
	Mean anomaly (rad) More...

double	OMEGA0
	Longitude of ascending node at weekly epoch (rad) More...

double	OMEGAdot
	Rate of Rt ascension (rad/sec) More...

CommonTime	Toc
	Clock epoch. More...

CommonTime	Toe
	Orbit epoch. More...

double	w
	Argument of perigee (rad) More...

CommonTime	xmitTime
	Time of transmission of the start of the data. More...

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

CommonTime	timeStamp

std::string	weekFmt

Public Attributes inherited from gnsstk::NavFit
CommonTime	beginFit
	Time at beginning of fit interval. More...

CommonTime	endFit
	Time at end of fit interval. More...

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::GPSLNavData
static const GNSSTK_EXPORT double	refEccQZSS = 0.06
	Reference eccentricity for reduced almanac in IS-QZSS-200. More...

static const GNSSTK_EXPORT double	refioffsetGPS = 0.3 * PI
	inclination offset, this + delta i = i0, defined in IS-GPS-200. More...

static const GNSSTK_EXPORT double	refioffsetQZSS = 0.25 * PI
	inclination offset, this + delta i = i0, defined in IS-QZSS. More...

Static Public Attributes inherited from gnsstk::OrbitDataKepler
static const size_t	fw = 16
	Field width of floating point numbers (precision + 8). More...

static const size_t	precision = 8
	Precision used when printing floating point numbers. 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

◆ GPSLNavEph()

gnsstk::GPSLNavEph::GPSLNavEph ( )

Sets the nav message type and all other data members to 0.

Definition at line 49 of file GPSLNavEph.cpp.

Member Function Documentation

◆ clone()

NavDataPtr gnsstk::GPSLNavEph::clone ( ) const

inlineoverridevirtual

Create a deep copy of this object.

Implements gnsstk::NavData.

Definition at line 57 of file GPSLNavEph.hpp.

◆ dump()

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

overridevirtual

Print the contents of this NavData object in a (usually) human-readable format.

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 137 of file GPSLNavEph.cpp.

◆ dumpSVStatus()

void gnsstk::GPSLNavEph::dumpSVStatus ( std::ostream & s ) const

overridevirtual

Dump SV status information (e.g. health).

Parameters

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

Note: we add 6 seconds to xmitTime because we're printing the HOW time not the transmit time. Also we're really just guessing about the SF2 and SF3 HOW times.

Reimplemented from gnsstk::OrbitDataKepler.

Definition at line 190 of file GPSLNavEph.cpp.

◆ fixFit()

void gnsstk::GPSLNavEph::fixFit ( )

Fill the beginFit and endFit values for this object.

Precondition: Toe, iodc, fitIntFlag and xmitTime must all be set.

Definition at line 92 of file GPSLNavEph.cpp.

◆ getUserTime()

CommonTime gnsstk::GPSLNavEph::getUserTime ( ) const

overridevirtual

Returns the time when the navigation message would have first been available to the user equipment, i.e. the time at which the final bit of a given broadcast navigation message is received. This is used by NavDataFactoryWithStore::find() in User mode.

Returns: most recent transmit time + 6s.

Reimplemented from gnsstk::NavData.

Definition at line 84 of file GPSLNavEph.cpp.

◆ validate()

bool gnsstk::GPSLNavEph::validate ( ) const

overridevirtual

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

Todo:: implement some checking.

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

Reimplemented from gnsstk::GPSLNavData.

Definition at line 76 of file GPSLNavEph.cpp.

Member Data Documentation

◆ alert2

bool gnsstk::GPSLNavEph::alert2

Alert flag from SF2 HOW.

Definition at line 104 of file GPSLNavEph.hpp.

◆ alert3

bool gnsstk::GPSLNavEph::alert3

Alert flag from SF3 HOW.

Definition at line 105 of file GPSLNavEph.hpp.

◆ aodo

long gnsstk::GPSLNavEph::aodo

Age of Data Offset in seconds (-1=uninitialized).

Definition at line 115 of file GPSLNavEph.hpp.

◆ asFlag2

bool gnsstk::GPSLNavEph::asFlag2

Anti-spoof flag from SF2 HOW.

Definition at line 106 of file GPSLNavEph.hpp.

◆ asFlag3

bool gnsstk::GPSLNavEph::asFlag3

Anti-spoof flag from SF3 HOW.

Definition at line 107 of file GPSLNavEph.hpp.

◆ codesL2

GPSLNavL2Codes gnsstk::GPSLNavEph::codesL2

Code on L2 in-phase component.

Definition at line 108 of file GPSLNavEph.hpp.

◆ fitIntFlag

uint8_t gnsstk::GPSLNavEph::fitIntFlag

Fit interval flag from subframe 2.

Definition at line 100 of file GPSLNavEph.hpp.

◆ healthBits

uint8_t gnsstk::GPSLNavEph::healthBits

6 SV health bits from subframe 1, word 3.

Definition at line 101 of file GPSLNavEph.hpp.

◆ iodc

uint16_t gnsstk::GPSLNavEph::iodc

Issue Of Data-Clock for the ephemeris.

Definition at line 98 of file GPSLNavEph.hpp.

◆ iode

uint16_t gnsstk::GPSLNavEph::iode

Issue Of Data-Ephemeris.

Definition at line 99 of file GPSLNavEph.hpp.

◆ isf2

bool gnsstk::GPSLNavEph::isf2

Integrity status flag from subframe 2.

Definition at line 96 of file GPSLNavEph.hpp.

◆ isf3

bool gnsstk::GPSLNavEph::isf3

Integrity status flag from subframe 3.

Definition at line 97 of file GPSLNavEph.hpp.

◆ L2Pdata

bool gnsstk::GPSLNavEph::L2Pdata

L2 P data flag from subframe 1, word 3.

Note: This retains the behavior as described in IS-GPS-200K 20.3.3.3.1.6, in that true (1) indicates the LNAV data stream was commanded OFF on the P-code of the in-phase component of the L2 channel

Definition at line 114 of file GPSLNavEph.hpp.

◆ pre2

uint32_t gnsstk::GPSLNavEph::pre2

The TLM preamble from word 1 of subframe 2.

Definition at line 92 of file GPSLNavEph.hpp.

◆ pre3

uint32_t gnsstk::GPSLNavEph::pre3

The TLM preamble from word 1 of subframe 3.

Definition at line 93 of file GPSLNavEph.hpp.

◆ tgd

double gnsstk::GPSLNavEph::tgd

Ionospheric group delay in seconds.

Definition at line 103 of file GPSLNavEph.hpp.

◆ tlm2

uint32_t gnsstk::GPSLNavEph::tlm2

The TLM message from word 1 of subframe 2.

Definition at line 94 of file GPSLNavEph.hpp.

◆ tlm3

uint32_t gnsstk::GPSLNavEph::tlm3

The TLM message from word 1 of subframe 3.

Definition at line 95 of file GPSLNavEph.hpp.

◆ uraIndex

uint8_t gnsstk::GPSLNavEph::uraIndex

4-bit URA index from subframe 1, word 3.

Definition at line 102 of file GPSLNavEph.hpp.

◆ xmit2

CommonTime gnsstk::GPSLNavEph::xmit2

Transmit time for subframe 2.

Definition at line 90 of file GPSLNavEph.hpp.

◆ xmit3

CommonTime gnsstk::GPSLNavEph::xmit3

Transmit time for subframe 3.

Definition at line 91 of file GPSLNavEph.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

◆ GPSLNavEph()

Member Function Documentation

◆ clone()

◆ dump()

◆ dumpSVStatus()

◆ fixFit()

◆ getUserTime()

◆ validate()

Member Data Documentation

◆ alert2

◆ alert3

◆ aodo

◆ asFlag2

◆ asFlag3

◆ codesL2

◆ fitIntFlag

◆ healthBits

◆ iodc

◆ iode

◆ isf2

◆ isf3

◆ L2Pdata

◆ pre2

◆ pre3

◆ tgd

◆ tlm2

◆ tlm3

◆ uraIndex

◆ xmit2

◆ xmit3