This class is a storage and orbital model functions for the GLONASS SV ephemeris data as described in GLONASS ICD (Edition 5.1). More...

#include <glonass_gnav_ephemeris.h>

Public Member Functions
	Glonass_Gnav_Ephemeris ()=default
double	sv_clock_drift (double transmitTime, double timeCorrUTC)
	Sets (d_satClkDrift)and returns the clock drift in seconds according to the User Algorithm for SV Clock Correction.
boost::posix_time::ptime	compute_GLONASS_time (double offset_time) const
	Computes the GLONASS System Time and returns a boost::posix_time::ptime object \ param offset_time Is the start of day offset to compute the time.
boost::posix_time::ptime	glot_to_utc (double offset_time, double glot2utc_corr) const
	Converts from GLONASST to UTC.
void	glot_to_gpst (double tod_offset, double glot2utc_corr, double glot2gpst_corr, int32_t WN, double TOW) const
	Converts from GLONASST to GPST.
template<class Archive>
void	serialize (Archive &archive, const uint32_t version)
	Serialize is a boost standard method to be called by the boost XML serialization. Here is used to save the ephemeris data on disk file.

Public Attributes
double	d_m {}
	String number within frame [dimensionless].
double	d_t_k {}
	GLONASS Time (UTC(SU) + 3 h) referenced to the beginning of the frame within the current day [s].
double	d_t_b {}
	Reference ephemeris relative time in GLONASS Time (UTC(SU) + 3 h). Index of a time interval within current day according to UTC(SU) + 03 hours 00 min. [s].
double	d_M {}
	Type of satellite transmitting navigation signal [dimensionless].
double	d_gamma_n {}
	Relative deviation of predicted carrier frequency value of n- satellite from nominal value at the instant tb [dimensionless].
double	d_tau_n {}
	Correction to the nth satellite time (tn) relative to GLONASS time (te),.
double	d_Xn {}
	Earth-fixed coordinate x of the satellite in PZ-90.02 coordinate system [km].
double	d_Yn {}
	Earth-fixed coordinate y of the satellite in PZ-90.02 coordinate system [km].
double	d_Zn {}
	Earth-fixed coordinate z of the satellite in PZ-90.02 coordinate system [km].
double	d_VXn {}
	Earth-fixed velocity coordinate x of the satellite in PZ-90.02 coordinate system [km/s].
double	d_VYn {}
	Earth-fixed velocity coordinate y of the satellite in PZ-90.02 coordinate system [km/s].
double	d_VZn {}
	Earth-fixed velocity coordinate z of the satellite in PZ-90.02 coordinate system [km/s].
double	d_AXn {}
	Earth-fixed acceleration coordinate x of the satellite in PZ-90.02 coordinate system [km/s^2].
double	d_AYn {}
	Earth-fixed acceleration coordinate y of the satellite in PZ-90.02 coordinate system [km/s^2].
double	d_AZn {}
	Earth-fixed acceleration coordinate z of the satellite in PZ-90.02 coordinate system [km/s^2].
double	d_B_n {}
	Health flag [dimensionless].
double	d_P {}
	Technological parameter of control segment, indication the satellite operation mode in respect of time parameters [dimensionless].
double	d_N_T {}
	Current date, calendar number of day within four-year interval starting from the 1-st of January in a leap year [days].
double	d_F_T {}
	Parameter that provides the predicted satellite user range accuracy at time tb [dimensionless].
double	d_n {}
	Index of the satellite transmitting given navigation signal. It corresponds to a slot number within GLONASS constellation.
double	d_Delta_tau_n {}
	Time difference between navigation RF signal transmitted in L2 sub- band and aviation RF signal transmitted in L1 sub-band by nth satellite. [dimensionless].
double	d_E_n {}
	Characterises "age" of a current information [days].
double	d_P_1 {}
	Flag of the immediate data updating [minutes].
bool	d_P_2 {}
	Flag of oddness ("1") or evenness ("0") of the value of (tb) [dimensionless].
bool	d_P_3 {}
	Flag indicating a number of satellites for which almanac is transmitted within given frame: "1" corresponds to 5 satellites and "0" corresponds to 4 satellites [dimensionless].
bool	d_P_4 {}
	Flag to show that ephemeris parameters are present. "1" indicates that updated ephemeris or frequency/time parameters have been uploaded by the control segment [dimensionless].
bool	d_l3rd_n {}
	Health flag for nth satellite; ln = 0 indicates the n-th satellite is healthy, ln = 1 indicates malfunction of this nth satellite [dimensionless].
bool	d_l5th_n {}
	Health flag for nth satellite; ln = 0 indicates the n-th satellite is healthy, ln = 1 indicates malfunction of this nth satellite [dimensionless].
int32_t	i_satellite_freq_channel {}
	SV Frequency Channel Number.
uint32_t	PRN {}
	SV PRN Number, equivalent to slot number for compatibility with GPS.
uint32_t	i_satellite_slot_number {}
	SV Slot Number.
double	d_yr = 1972.0
	Current year.
double	d_satClkDrift {}
	GLONASS clock error.
double	d_dtr {}
	relativistic clock correction term
double	d_iode {}
	Issue of data, ephemeris (Bit 0-6 of tb).
double	d_tau_c {}
	GLONASST 2 UTC correction (todo) may be eliminated.
double	d_TOW {}
	GLONASST IN GPST seconds of week.
int32_t	d_WN {}
	GLONASST IN GPST week number of the start of frame.
double	d_tod {}
	Time of Day since ephemeris where decoded.

Detailed Description

This class is a storage and orbital model functions for the GLONASS SV ephemeris data as described in GLONASS ICD (Edition 5.1).

Note: Code added as part of GSoC 2017 program

See also: GLONASS ICD

Definition at line 40 of file glonass_gnav_ephemeris.h.

Constructor & Destructor Documentation

◆ Glonass_Gnav_Ephemeris()

Glonass_Gnav_Ephemeris::Glonass_Gnav_Ephemeris ( )

default

Default constructor

Member Function Documentation

◆ compute_GLONASS_time()

boost::posix_time::ptime Glonass_Gnav_Ephemeris::compute_GLONASS_time ( double offset_time ) const

Computes the GLONASS System Time and returns a boost::posix_time::ptime object \ param offset_time Is the start of day offset to compute the time.

◆ glot_to_gpst()

void Glonass_Gnav_Ephemeris::glot_to_gpst	(	double	tod_offset,
		double	glot2utc_corr,
		double	glot2gpst_corr,
		int32_t *	WN,
		double *	TOW ) const

Converts from GLONASST to GPST.

Converts from GLONASST to GPST in time of week (TOW) and week number (WN) format

Parameters

[in]	tod_offset	Is the start of day offset
[in]	glot2utc_corr	Correction from GLONASST to UTC
[in]	glot2gpst_corr	Correction from GLONASST to GPST
[out]	WN	Week Number, not in mod(1024) format
[out]	TOW	Time of Week in seconds of week

◆ glot_to_utc()

boost::posix_time::ptime Glonass_Gnav_Ephemeris::glot_to_utc	(	double	offset_time,
		double	glot2utc_corr ) const

Converts from GLONASST to UTC.

The function simply adjust for the 6 hrs offset between GLONASST and UTC

Parameters

[in]	offset_time	Is the start of day offset
[in]	glot2utc_corr	Correction from GLONASST to UTC

Returns: UTC time as a boost::posix_time::ptime object

◆ serialize()

template<class Archive>

void Glonass_Gnav_Ephemeris::serialize	(	Archive &	archive,
		const uint32_t	version )

inline

Serialize is a boost standard method to be called by the boost XML serialization. Here is used to save the ephemeris data on disk file.

< SV PRN frequency channel number

< String number within frame [dimensionless]

< Time referenced to the beginning of the frame within the current day [hours, minutes, seconds]

< Index of a time interval within current day according to UTC(SU) + 03 hours 00 min. [minutes]

< Type of satellite transmitting navigation signal [dimensionless]

< Relative deviation of predicted carrier frequency value of n- satellite from nominal value at the instant tb [dimensionless]

< Correction to the nth satellite time (tn) relative to GLONASS time (te)

< Earth-fixed coordinate x of the satellite in PZ-90.02 coordinate system [km].

< Earth-fixed coordinate y of the satellite in PZ-90.02 coordinate system [km]

< Earth-fixed coordinate z of the satellite in PZ-90.02 coordinate system [km]

< Earth-fixed velocity coordinate x of the satellite in PZ-90.02 coordinate system [km/s]

< Earth-fixed velocity coordinate y of the satellite in PZ-90.02 coordinate system [km/s]

< Earth-fixed velocity coordinate z of the satellite in PZ-90.02 coordinate system [km/s]

< Earth-fixed acceleration coordinate x of the satellite in PZ-90.02 coordinate system [km/s^2]

< Earth-fixed acceleration coordinate y of the satellite in PZ-90.02 coordinate system [km/s^2]

< Earth-fixed acceleration coordinate z of the satellite in PZ-90.02 coordinate system [km/s^2]

< Health flag [dimensionless]

< Technological parameter of control segment, indication the satellite operation mode in respect of time parameters [dimensionless]

< Current date, calendar number of day within four-year interval starting from the 1-st of January in a leap year [days]

< Parameter that provides the predicted satellite user range accuracy at time tb [dimensionless]

< Index of the satellite transmitting given navigation signal. It corresponds to a slot number within GLONASS constellation

< Time difference between navigation RF signal transmitted in L2 sub- band and aviation RF signal transmitted in L1 sub-band by nth satellite. [dimensionless]

< Characterises "age" of a current information [days]

< Flag of the immediate data updating.

< Flag of oddness ("1") or evenness ("0") of the value of (tb) [dimensionless]

< Flag indicating a number of satellites for which almanac is transmitted within given frame: "1" corresponds to 5 satellites and "0" corresponds to 4 satellites [dimensionless]

< Flag to show that ephemeris parameters are present. "1" indicates that updated ephemeris or frequency/time parameters have been uploaded by the control segment [dimensionless]

< Health flag for nth satellite; ln = 0 indicates the n-th satellite is helthy, ln = 1 indicates malfunction of this nth satellite [dimensionless]

Definition at line 128 of file glonass_gnav_ephemeris.h.

References d_AXn, d_AYn, d_AZn, d_B_n, d_Delta_tau_n, d_E_n, d_F_T, d_gamma_n, d_l3rd_n, d_l5th_n, d_M, d_m, d_n, d_N_T, d_P, d_P_1, d_P_2, d_P_3, d_P_4, d_t_b, d_t_k, d_tau_n, d_VXn, d_VYn, d_VZn, d_Xn, d_Yn, d_Zn, i_satellite_freq_channel, i_satellite_slot_number, and PRN.

◆ sv_clock_drift()

double Glonass_Gnav_Ephemeris::sv_clock_drift	(	double	transmitTime,
		double	timeCorrUTC )

Sets (d_satClkDrift)and returns the clock drift in seconds according to the User Algorithm for SV Clock Correction.

Member Data Documentation

◆ d_AXn

double Glonass_Gnav_Ephemeris::d_AXn {}

Earth-fixed acceleration coordinate x of the satellite in PZ-90.02 coordinate system [km/s^2].

Definition at line 60 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_AYn

double Glonass_Gnav_Ephemeris::d_AYn {}

Earth-fixed acceleration coordinate y of the satellite in PZ-90.02 coordinate system [km/s^2].

Definition at line 61 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_AZn

double Glonass_Gnav_Ephemeris::d_AZn {}

Earth-fixed acceleration coordinate z of the satellite in PZ-90.02 coordinate system [km/s^2].

Definition at line 62 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_B_n

double Glonass_Gnav_Ephemeris::d_B_n {}

Health flag [dimensionless].

Definition at line 63 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_Delta_tau_n

double Glonass_Gnav_Ephemeris::d_Delta_tau_n {}

Time difference between navigation RF signal transmitted in L2 sub- band and aviation RF signal transmitted in L1 sub-band by nth satellite. [dimensionless].

Definition at line 68 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_dtr

double Glonass_Gnav_Ephemeris::d_dtr {}

relativistic clock correction term

Definition at line 84 of file glonass_gnav_ephemeris.h.

◆ d_E_n

double Glonass_Gnav_Ephemeris::d_E_n {}

Characterises "age" of a current information [days].

Definition at line 69 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_F_T

double Glonass_Gnav_Ephemeris::d_F_T {}

Parameter that provides the predicted satellite user range accuracy at time tb [dimensionless].

Definition at line 66 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_gamma_n

double Glonass_Gnav_Ephemeris::d_gamma_n {}

Relative deviation of predicted carrier frequency value of n- satellite from nominal value at the instant tb [dimensionless].

Definition at line 52 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_iode

double Glonass_Gnav_Ephemeris::d_iode {}

Issue of data, ephemeris (Bit 0-6 of tb).

Definition at line 85 of file glonass_gnav_ephemeris.h.

◆ d_l3rd_n

bool Glonass_Gnav_Ephemeris::d_l3rd_n {}

Health flag for nth satellite; ln = 0 indicates the n-th satellite is healthy, ln = 1 indicates malfunction of this nth satellite [dimensionless].

Definition at line 74 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_l5th_n

bool Glonass_Gnav_Ephemeris::d_l5th_n {}

Health flag for nth satellite; ln = 0 indicates the n-th satellite is healthy, ln = 1 indicates malfunction of this nth satellite [dimensionless].

Definition at line 75 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_M

double Glonass_Gnav_Ephemeris::d_M {}

Type of satellite transmitting navigation signal [dimensionless].

Definition at line 51 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_m

double Glonass_Gnav_Ephemeris::d_m {}

String number within frame [dimensionless].

Definition at line 48 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_n

double Glonass_Gnav_Ephemeris::d_n {}

Index of the satellite transmitting given navigation signal. It corresponds to a slot number within GLONASS constellation.

Definition at line 67 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_N_T

double Glonass_Gnav_Ephemeris::d_N_T {}

Current date, calendar number of day within four-year interval starting from the 1-st of January in a leap year [days].

Definition at line 65 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_P

double Glonass_Gnav_Ephemeris::d_P {}

Technological parameter of control segment, indication the satellite operation mode in respect of time parameters [dimensionless].

Definition at line 64 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_P_1

double Glonass_Gnav_Ephemeris::d_P_1 {}

Flag of the immediate data updating [minutes].

Definition at line 70 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_P_2

bool Glonass_Gnav_Ephemeris::d_P_2 {}

Flag of oddness ("1") or evenness ("0") of the value of (tb) [dimensionless].

Definition at line 71 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_P_3

bool Glonass_Gnav_Ephemeris::d_P_3 {}

Flag indicating a number of satellites for which almanac is transmitted within given frame: "1" corresponds to 5 satellites and "0" corresponds to 4 satellites [dimensionless].

Definition at line 72 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_P_4

bool Glonass_Gnav_Ephemeris::d_P_4 {}

Flag to show that ephemeris parameters are present. "1" indicates that updated ephemeris or frequency/time parameters have been uploaded by the control segment [dimensionless].

Definition at line 73 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_satClkDrift

double Glonass_Gnav_Ephemeris::d_satClkDrift {}

GLONASS clock error.

Definition at line 83 of file glonass_gnav_ephemeris.h.

◆ d_t_b

double Glonass_Gnav_Ephemeris::d_t_b {}

Reference ephemeris relative time in GLONASS Time (UTC(SU) + 3 h). Index of a time interval within current day according to UTC(SU) + 03 hours 00 min. [s].

Definition at line 50 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_t_k

double Glonass_Gnav_Ephemeris::d_t_k {}

GLONASS Time (UTC(SU) + 3 h) referenced to the beginning of the frame within the current day [s].

Definition at line 49 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_tau_c

double Glonass_Gnav_Ephemeris::d_tau_c {}

GLONASST 2 UTC correction (todo) may be eliminated.

Definition at line 86 of file glonass_gnav_ephemeris.h.

◆ d_tau_n

double Glonass_Gnav_Ephemeris::d_tau_n {}

Correction to the nth satellite time (tn) relative to GLONASS time (te),.

Definition at line 53 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_tod

double Glonass_Gnav_Ephemeris::d_tod {}

Time of Day since ephemeris where decoded.

Definition at line 89 of file glonass_gnav_ephemeris.h.

◆ d_TOW

double Glonass_Gnav_Ephemeris::d_TOW {}

GLONASST IN GPST seconds of week.

Definition at line 87 of file glonass_gnav_ephemeris.h.

◆ d_VXn

double Glonass_Gnav_Ephemeris::d_VXn {}

Earth-fixed velocity coordinate x of the satellite in PZ-90.02 coordinate system [km/s].

Definition at line 57 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_VYn

double Glonass_Gnav_Ephemeris::d_VYn {}

Earth-fixed velocity coordinate y of the satellite in PZ-90.02 coordinate system [km/s].

Definition at line 58 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_VZn

double Glonass_Gnav_Ephemeris::d_VZn {}

Earth-fixed velocity coordinate z of the satellite in PZ-90.02 coordinate system [km/s].

Definition at line 59 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_WN

int32_t Glonass_Gnav_Ephemeris::d_WN {}

GLONASST IN GPST week number of the start of frame.

Definition at line 88 of file glonass_gnav_ephemeris.h.

◆ d_Xn

double Glonass_Gnav_Ephemeris::d_Xn {}

Earth-fixed coordinate x of the satellite in PZ-90.02 coordinate system [km].

Definition at line 54 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_Yn

double Glonass_Gnav_Ephemeris::d_Yn {}

Earth-fixed coordinate y of the satellite in PZ-90.02 coordinate system [km].

Definition at line 55 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ d_yr

double Glonass_Gnav_Ephemeris::d_yr = 1972.0

Current year.

Definition at line 82 of file glonass_gnav_ephemeris.h.

◆ d_Zn

double Glonass_Gnav_Ephemeris::d_Zn {}

Earth-fixed coordinate z of the satellite in PZ-90.02 coordinate system [km].

Definition at line 56 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ i_satellite_freq_channel

int32_t Glonass_Gnav_Ephemeris::i_satellite_freq_channel {}

SV Frequency Channel Number.

Definition at line 79 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ i_satellite_slot_number

uint32_t Glonass_Gnav_Ephemeris::i_satellite_slot_number {}

SV Slot Number.

Definition at line 81 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

◆ PRN

uint32_t Glonass_Gnav_Ephemeris::PRN {}

SV PRN Number, equivalent to slot number for compatibility with GPS.

Definition at line 80 of file glonass_gnav_ephemeris.h.

Referenced by serialize().

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

glonass_gnav_ephemeris.h

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Glonass_Gnav_Ephemeris()

Member Function Documentation

◆ compute_GLONASS_time()

◆ glot_to_gpst()

◆ glot_to_utc()

◆ serialize()

◆ sv_clock_drift()

Member Data Documentation

◆ d_AXn

◆ d_AYn

◆ d_AZn

◆ d_B_n

◆ d_Delta_tau_n

◆ d_dtr

◆ d_E_n

◆ d_F_T

◆ d_gamma_n

◆ d_iode

◆ d_l3rd_n

◆ d_l5th_n

◆ d_M

◆ d_m

◆ d_n

◆ d_N_T

◆ d_P

◆ d_P_1

◆ d_P_2

◆ d_P_3

◆ d_P_4

◆ d_satClkDrift

◆ d_t_b

◆ d_t_k

◆ d_tau_c

◆ d_tau_n

◆ d_tod

◆ d_TOW

◆ d_VXn

◆ d_VYn

◆ d_VZn

◆ d_WN

◆ d_Xn

◆ d_Yn

◆ d_yr

◆ d_Zn

◆ i_satellite_freq_channel

◆ i_satellite_slot_number

◆ PRN