Detailed Description

Class containing data elements unique to GPS CNav ephemerides.

Note: The standard xmitTime data member (in OrbitDataKepler) corresponds to the transmit time of message type 10.

Definition at line 52 of file GPSCNavEph.hpp.

#include <GPSCNavEph.hpp>

Inheritance diagram for gnsstk::GPSCNavEph:

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

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

void	fixFit ()

CommonTime	getUserTime () const override

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

bool	validate () const override

Public Member Functions inherited from gnsstk::GPSCNavData
	GPSCNavData ()
	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	alert11
	Alert flag from message type 11. More...

bool	alertClk
	Alert flag from the clock message. More...

double	deltaA
	Semi-major axis relative to reference (Aref). More...

double	dOMEGAdot
	Rate of right ascension relative to -2.6e-9*pi. More...

bool	healthL1
	L1 signal health from message type 10. More...

bool	healthL2
	L2 signal health from message type 10. More...

bool	healthL5
	L5 signal health from message type 10. More...

bool	integStat
	Integrity status flag. More...

bool	phasingL2C
	L2C phasing. More...

uint32_t	pre11
	The preamble from the start of message type 11. More...

uint32_t	preClk

CommonTime	top
	Time of prediction. More...

int8_t	uraED
	5-bit URA index from message type 10. More...

int8_t	uraNED0
	non-elevation dependent URA from clock message. More...

uint8_t	uraNED1
	non-elevation dependent URA from clock message. More...

uint8_t	uraNED2
	non-elevation dependent URA from clock message. More...

CommonTime	xmit11
	Transmit time for message 11. More...

CommonTime	xmitClk
	Transmit time for the clock message. More...

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

uint32_t	pre
	The preamble from the start 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::GPSCNavData
static const GNSSTK_EXPORT double	refAGPS = 26559710

static const GNSSTK_EXPORT double	refAQZSS = 42164200

static const GNSSTK_EXPORT double	refdeltaiGPS = 0.0056 * PI

static const GNSSTK_EXPORT double	refdeltaiQZSS = 0.0056 * PI

static const GNSSTK_EXPORT double	refEccGPS = 0

static const GNSSTK_EXPORT double	refEccQZSS = 0.075

static const GNSSTK_EXPORT double	refi0GPS = 0.3 * PI

static const GNSSTK_EXPORT double	refi0QZSS = 0.25 * PI

static const GNSSTK_EXPORT double	refOMEGAdotEphGPS = -2.6e-9 * PI

static const GNSSTK_EXPORT double	refOMEGAdotEphQZSS = -2.6e-9 * PI
	Ephemeris OMEGA dot reference value for QZSS (radians). More...

static const GNSSTK_EXPORT double	refOMEGAdotRedAlmGPS = -2.6e-9 * PI

static const GNSSTK_EXPORT double	refOMEGAdotRedAlmQZSS = -8.7e-10 * PI
	Reduced almanac OMEGA dot reference value for QZSS (radians). More...

static const GNSSTK_EXPORT double	refwGPS = 0
	Argument of perigee reference value (radians, guessed at). More...

static const GNSSTK_EXPORT double	refwQZSS = 2.0 * PI * 270.0 / 360.0
	Argument of perigee reference value in IS-QZSS (radians). 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

◆ GPSCNavEph()

gnsstk::GPSCNavEph::GPSCNavEph ( )

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

Definition at line 48 of file GPSCNavEph.cpp.

Member Function Documentation

◆ clone()

NavDataPtr gnsstk::GPSCNavEph::clone ( ) const

inlineoverridevirtual

Create a deep copy of this object.

Implements gnsstk::NavData.

Definition at line 58 of file GPSCNavEph.hpp.

◆ dumpSVStatus()

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

overridevirtual

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

Parameters

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

Reimplemented from gnsstk::OrbitDataKepler.

Definition at line 129 of file GPSCNavEph.cpp.

◆ fixFit()

void gnsstk::GPSCNavEph::fixFit ( )

Fill the beginFit and endFit values for this object.

Precondition: xmitTime, xmit11, xmitClk, Toe must all be set.

Todo:: replace all these magic numbers with named constants or enums, with sensible names, not "NINTY_MINUTES" [sic]

Definition at line 91 of file GPSCNavEph.cpp.

◆ getUserTime()

CommonTime gnsstk::GPSCNavEph::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 + 12s or 6s, depending on whether this is CNAV on L5 or on L2.

Reimplemented from gnsstk::NavData.

Definition at line 81 of file GPSCNavEph.cpp.

◆ validate()

bool gnsstk::GPSCNavEph::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::GPSCNavData.

Definition at line 73 of file GPSCNavEph.cpp.

Member Data Documentation

◆ alert11

bool gnsstk::GPSCNavEph::alert11

Alert flag from message type 11.

Definition at line 96 of file GPSCNavEph.hpp.

◆ alertClk

bool gnsstk::GPSCNavEph::alertClk

Alert flag from the clock message.

Definition at line 97 of file GPSCNavEph.hpp.

◆ deltaA

double gnsstk::GPSCNavEph::deltaA

Semi-major axis relative to reference (Aref).

Definition at line 100 of file GPSCNavEph.hpp.

◆ dOMEGAdot

double gnsstk::GPSCNavEph::dOMEGAdot

Rate of right ascension relative to -2.6e-9*pi.

Definition at line 101 of file GPSCNavEph.hpp.

◆ healthL1

bool gnsstk::GPSCNavEph::healthL1

L1 signal health from message type 10.

Note: The health flags are true if unhealthy.

Definition at line 89 of file GPSCNavEph.hpp.

◆ healthL2

bool gnsstk::GPSCNavEph::healthL2

L2 signal health from message type 10.

Definition at line 90 of file GPSCNavEph.hpp.

◆ healthL5

bool gnsstk::GPSCNavEph::healthL5

L5 signal health from message type 10.

Definition at line 91 of file GPSCNavEph.hpp.

◆ integStat

bool gnsstk::GPSCNavEph::integStat

Integrity status flag.

Definition at line 98 of file GPSCNavEph.hpp.

◆ phasingL2C

bool gnsstk::GPSCNavEph::phasingL2C

L2C phasing.

Definition at line 99 of file GPSCNavEph.hpp.

◆ pre11

uint32_t gnsstk::GPSCNavEph::pre11

The preamble from the start of message type 11.

Definition at line 86 of file GPSCNavEph.hpp.

◆ preClk

uint32_t gnsstk::GPSCNavEph::preClk

The preamble from the start of the clock message.

Definition at line 87 of file GPSCNavEph.hpp.

◆ top

CommonTime gnsstk::GPSCNavEph::top

Time of prediction.

Definition at line 102 of file GPSCNavEph.hpp.

◆ uraED

int8_t gnsstk::GPSCNavEph::uraED

5-bit URA index from message type 10.

Definition at line 92 of file GPSCNavEph.hpp.

◆ uraNED0

int8_t gnsstk::GPSCNavEph::uraNED0

non-elevation dependent URA from clock message.

Definition at line 93 of file GPSCNavEph.hpp.

◆ uraNED1

uint8_t gnsstk::GPSCNavEph::uraNED1

non-elevation dependent URA from clock message.

Definition at line 94 of file GPSCNavEph.hpp.

◆ uraNED2

uint8_t gnsstk::GPSCNavEph::uraNED2

non-elevation dependent URA from clock message.

Definition at line 95 of file GPSCNavEph.hpp.

◆ xmit11

CommonTime gnsstk::GPSCNavEph::xmit11

Transmit time for message 11.

Definition at line 103 of file GPSCNavEph.hpp.

◆ xmitClk

CommonTime gnsstk::GPSCNavEph::xmitClk

Transmit time for the clock message.

Definition at line 104 of file GPSCNavEph.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

◆ GPSCNavEph()

Member Function Documentation

◆ clone()

◆ dumpSVStatus()

◆ fixFit()

◆ getUserTime()

◆ validate()

Member Data Documentation

◆ alert11

◆ alertClk

◆ deltaA

◆ dOMEGAdot

◆ healthL1

◆ healthL2

◆ healthL5

◆ integStat

◆ phasingL2C

◆ pre11

◆ preClk

◆ top

◆ uraED

◆ uraNED0

◆ uraNED1

◆ uraNED2

◆ xmit11

◆ xmitClk