ALM Struct Reference

Almanac parameters of one specific satellite. More...

#include <gpsdefs.h>

Data Fields
CSUM	csum
	checksum of the remaining bytes More...
int16_t	valid
	flag data are valid More...
HEALTH	health
	[—] More...
T_GPS	t0a
	Reference Time Almanac [sec]. More...
double	sqrt_A
	Square Root of semi-major Axis [sqrt(m)]. More...
double	e
	Eccentricity [—]. More...
double	M0
	+- Mean Anomaly at Ref. Time [rad] More...
double	omega
	+- Argument of Perigee [rad] More...
double	OMEGA0
	+- Longit. of Asc. Node of orbit plane [rad] More...
double	OMEGADOT
	+- Rate of Right Ascension [rad/sec] More...
double	deltai
	+- [rad] More...
double	af0
	+- Clock Correction Coefficient 0 [sec] More...
double	af1
	+- Clock Correction Coefficient 1 [sec/sec] More...

Detailed Description

Almanac parameters of one specific satellite.

A reduced precision set of parameters used to check if a satellite is in view at a given time. Valid for an interval of more than 7 days from start of transmission.

Definition at line 18486 of file gpsdefs.h.

Field Documentation

af0

double ALM::af0

+- Clock Correction Coefficient 0 [sec]

Definition at line 18502 of file gpsdefs.h.

Referenced by swap_alm_doubles().

af1

double ALM::af1

+- Clock Correction Coefficient 1 [sec/sec]

Definition at line 18503 of file gpsdefs.h.

Referenced by swap_alm_doubles().

csum

CSUM ALM::csum

checksum of the remaining bytes

Definition at line 18488 of file gpsdefs.h.

deltai

double ALM::deltai

+- [rad]

Definition at line 18501 of file gpsdefs.h.

Referenced by swap_alm_doubles().

e

double ALM::e

Eccentricity [—].

Definition at line 18495 of file gpsdefs.h.

Referenced by swap_alm_doubles().

health

HEALTH ALM::health

[—]

Definition at line 18491 of file gpsdefs.h.

M0

double ALM::M0

+- Mean Anomaly at Ref. Time [rad]

Definition at line 18497 of file gpsdefs.h.

Referenced by swap_alm_doubles().

omega

double ALM::omega

+- Argument of Perigee [rad]

Definition at line 18498 of file gpsdefs.h.

Referenced by swap_alm_doubles().

OMEGA0

double ALM::OMEGA0

+- Longit. of Asc. Node of orbit plane [rad]

Definition at line 18499 of file gpsdefs.h.

Referenced by swap_alm_doubles().

OMEGADOT

double ALM::OMEGADOT

+- Rate of Right Ascension [rad/sec]

Definition at line 18500 of file gpsdefs.h.

Referenced by swap_alm_doubles().

sqrt_A

double ALM::sqrt_A

Square Root of semi-major Axis [sqrt(m)].

Definition at line 18494 of file gpsdefs.h.

Referenced by swap_alm_doubles().

t0a

T_GPS ALM::t0a

Reference Time Almanac [sec].

Definition at line 18492 of file gpsdefs.h.

valid

int16_t ALM::valid

flag data are valid

Definition at line 18489 of file gpsdefs.h.

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

• mbglib/common/gpsdefs.h