Base class for GNSS almanac storage. More...

#include <gnss_almanac.h>

Inheritance diagram for Gnss_Almanac:

Public Member Functions
	Gnss_Almanac ()=default
double	predicted_doppler (double rx_time_s, double lat, double lon, double h, double ve, double vn, double vu, int band) const
	Computes prediction of the Doppler shift for a given time and receiver's position and velocity.
void	satellitePosVelComputation (double transmitTime, std::array< double, 7 > &pos_vel_dtr) const
	Computes satellite Position and Velocity, in ECEF, for a given time (expressed in seconds of week).

Public Attributes
uint32_t	PRN {}
	SV PRN NUMBER.
double	delta_i {}
	Inclination Angle at Reference Time (relative to i_0 = 0.30 semi-circles).
int32_t	toa {}
	Almanac data reference time of week [s].
int32_t	WNa {}
	Almanac week number.
double	M_0 {}
	Mean Anomaly at Reference Time [semi-circles].
double	ecc {}
	Eccentricity [dimensionless].
double	sqrtA {}
	Square Root of the Semi-Major Axis [sqrt(m)].
double	OMEGA_0 {}
	Longitude of Ascending Node of Orbit Plane at Weekly Epoch [semi-circles].
double	omega {}
	Argument of Perigee [semi-cicles].
double	OMEGAdot {}
	Rate of Right Ascension [semi-circles/s].
double	af0 {}
	Coefficient 0 of code phase offset model [s].
double	af1 {}
	Coefficient 1 of code phase offset model [s/s].

Protected Attributes
char	System {}
	Character ID of the GNSS system. 'G': GPS. 'E': Galileo. 'C': BeiDou.

Detailed Description

Base class for GNSS almanac storage.

Definition at line 33 of file gnss_almanac.h.

Constructor & Destructor Documentation

◆ Gnss_Almanac()

Gnss_Almanac::Gnss_Almanac ( )

default

Default constructor

Member Function Documentation

◆ predicted_doppler()

double Gnss_Almanac::predicted_doppler	(	double	rx_time_s,
		double	lat,
		double	lon,
		double	h,
		double	ve,
		double	vn,
		double	vu,
		int	band ) const

Computes prediction of the Doppler shift for a given time and receiver's position and velocity.

\[f_{d} = - \mathbf{v} \frac{\mathbf{x}^{T}}{\left| \mathbf{x} \right| } \frac{f_{L}}{c} \]

where:

\[\mathbf{v} = \mathbf{v}_{sat} - \mathbf{v}_{rx} \]

\[\mathbf{x} = \mathbf{x}_{sat} - \mathbf{x}_{rx} \]

\[\left| \mathbf{x} \right| = \sqrt{\mathbf{x}\mathbf{x}^{T}} \]

Parameters

[in]	rx_time_s	Time of Week in seconds
[in]	lat	Receiver's latitude in degrees
[in]	lon	Receiver's longitude in degrees
[in]	h	Receiver's height in meters
[in]	ve	Receiver's velocity in the East direction [m/s]
[in]	vn	Receiver's velocity in the North direction [m/s]
[in]	vu	Receiver's velocity in the Up direction [m/s]
[in]	band	Signal band for which the Doppler will be computed (1: L1 C/A, E1B, BI1; 2: L2C, BI2; 3: BI3; 5: L5/E5a; 6: E6B; 7: E5b; 8: E5a+E5b)

◆ satellitePosVelComputation()

void Gnss_Almanac::satellitePosVelComputation	(	double	transmitTime,
		std::array< double, 7 > &	pos_vel_dtr ) const

Computes satellite Position and Velocity, in ECEF, for a given time (expressed in seconds of week).

Member Data Documentation

◆ af0

double Gnss_Almanac::af0 {}

Coefficient 0 of code phase offset model [s].

Definition at line 91 of file gnss_almanac.h.

◆ af1

double Gnss_Almanac::af1 {}

Coefficient 1 of code phase offset model [s/s].

Definition at line 92 of file gnss_almanac.h.

◆ delta_i

double Gnss_Almanac::delta_i {}

Inclination Angle at Reference Time (relative to i_0 = 0.30 semi-circles).

Definition at line 82 of file gnss_almanac.h.

◆ ecc

double Gnss_Almanac::ecc {}

Eccentricity [dimensionless].

Definition at line 86 of file gnss_almanac.h.

◆ M_0

double Gnss_Almanac::M_0 {}

Mean Anomaly at Reference Time [semi-circles].

Definition at line 85 of file gnss_almanac.h.

◆ omega

double Gnss_Almanac::omega {}

Argument of Perigee [semi-cicles].

Definition at line 89 of file gnss_almanac.h.

◆ OMEGA_0

double Gnss_Almanac::OMEGA_0 {}

Longitude of Ascending Node of Orbit Plane at Weekly Epoch [semi-circles].

Definition at line 88 of file gnss_almanac.h.

◆ OMEGAdot

double Gnss_Almanac::OMEGAdot {}

Rate of Right Ascension [semi-circles/s].

Definition at line 90 of file gnss_almanac.h.

◆ PRN

uint32_t Gnss_Almanac::PRN {}

SV PRN NUMBER.

Definition at line 81 of file gnss_almanac.h.

◆ sqrtA

double Gnss_Almanac::sqrtA {}

Square Root of the Semi-Major Axis [sqrt(m)].

Definition at line 87 of file gnss_almanac.h.

◆ System

char Gnss_Almanac::System {}

protected

Character ID of the GNSS system. 'G': GPS. 'E': Galileo. 'C': BeiDou.

Definition at line 95 of file gnss_almanac.h.

Referenced by Beidou_Dnav_Almanac::Beidou_Dnav_Almanac(), Galileo_Almanac::Galileo_Almanac(), and Gps_Almanac::Gps_Almanac().

◆ toa

int32_t Gnss_Almanac::toa {}

Almanac data reference time of week [s].

Definition at line 83 of file gnss_almanac.h.

◆ WNa

int32_t Gnss_Almanac::WNa {}

Almanac week number.

Definition at line 84 of file gnss_almanac.h.

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

gnss_almanac.h

Public Member Functions

Public Attributes

Protected Attributes