mrtk_sbas.c File Reference

MRTKLIB SBAS Module — SBAS message decoding and corrections. More...

#include "mrtklib/mrtk_sbas.h"
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "mrtklib/mrtk_atmos.h"
#include "mrtklib/mrtk_bits.h"
#include "mrtklib/mrtk_sys.h"
#include "mrtklib/mrtk_trace.h"

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Macros
#define	SYS_NONE   0x00
#define	SYS_GPS   0x01
#define	SYS_SBS   0x02
#define	SYS_GLO   0x04
#define	SYS_QZS   0x10
#define	P2_11   4.882812500000000E-04 /* 2^-11 */
#define	P2_31   4.656612873077393E-10 /* 2^-31 */
#define	P2_39   1.818989403545856E-12 /* 2^-39 */
#define	MAXSBSAGEF   30.0 /* max age of SBAS fast correction (s) */
#define	MAXSBSAGEL   1800.0 /* max age of SBAS long term corr (s) */
#define	WEEKOFFSET   1024 /* gps week offset for NovAtel OEM-3 */

Functions
static char *	getfield (char *p, int pos)
static double	varfcorr (int udre)
static double	varicorr (int give)
static double	degfcorr (int ai)
static int	decode_sbstype1 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype2 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype6 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype7 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype9 (const sbsmsg_t *msg, nav_t *nav)
static int	decode_sbstype18 (const sbsmsg_t *msg, sbsion_t *sbsion)
static int	decode_longcorr0 (const sbsmsg_t *msg, int p, sbssat_t *sbssat)
static int	decode_longcorr1 (const sbsmsg_t *msg, int p, sbssat_t *sbssat)
static int	decode_longcorrh (const sbsmsg_t *msg, int p, sbssat_t *sbssat)
static int	decode_sbstype24 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype25 (const sbsmsg_t *msg, sbssat_t *sbssat)
static int	decode_sbstype26 (const sbsmsg_t *msg, sbsion_t *sbsion)
int	sbsupdatecorr (const sbsmsg_t *msg, nav_t *nav)
	Update SBAS corrections in navigation data.
static void	readmsgs (const char *file, int sel, gtime_t ts, gtime_t te, sbs_t *sbs)
static int	cmpmsgs (const void *p1, const void *p2)
int	sbsreadmsgt (const char *file, int sel, gtime_t ts, gtime_t te, sbs_t *sbs)
	Read SBAS message file with time span.
int	sbsreadmsg (const char *file, int sel, sbs_t *sbs)
	Read SBAS message file.
void	sbsoutmsg (FILE *fp, sbsmsg_t *sbsmsg)
	Output SBAS message record.
static void	searchigp (gtime_t time, const double *pos, const sbsion_t *ion, const sbsigp_t **igp, double *x, double *y)
int	sbsioncorr (gtime_t time, const nav_t *nav, const double *pos, const double *azel, double *delay, double *var)
	SBAS ionospheric delay correction.
static void	getmet (double lat, double *met)
double	sbstropcorr (gtime_t time, const double *pos, const double *azel, double *var)
	SBAS tropospheric delay correction.
static int	sbslongcorr (gtime_t time, int sat, const sbssat_t *sbssat, double *drs, double *ddts)
static int	sbsfastcorr (gtime_t time, int sat, const sbssat_t *sbssat, double *prc, double *var)
int	sbssatcorr (gtime_t time, int sat, const nav_t *nav, double *rs, double *dts, double *var)
	SBAS satellite ephemeris and clock correction.
int	sbsdecodemsg (gtime_t time, int prn, const uint32_t *words, sbsmsg_t *sbsmsg)
	Decode SBAS message frame words.

Variables
static const double	PI = 3.1415926535897932
static const double	D2R = 3.1415926535897932 / 180.0
static const double	R2D = 180.0 / 3.1415926535897932
static const double	CLIGHT = 299792458.0
static const double	RE_WGS84 = 6378137.0
static const int16_t	x1 []
static const int16_t	x2 []
static const int16_t	x3 []
static const int16_t	x4 []
static const int16_t	x5 []
static const int16_t	x6 []
static const int16_t	x7 [] = {-180, -150, -120, -90, -60, -30, 0, 30, 60, 90, 120, 150}
static const int16_t	x8 [] = {-170, -140, -110, -80, -50, -20, 10, 40, 70, 100, 130, 160}
const sbsigpband_t	igpband1 [9][8]
const sbsigpband_t	igpband2 [2][5]

Detailed Description

MRTKLIB SBAS Module — SBAS message decoding and corrections.

option : -DRRCENA enable rrc correction

references : [1] RTCA/DO-229C, Minimum operational performanc standards for global positioning system/wide area augmentation system airborne equipment, RTCA inc, November 28, 2001 [2] IS-QZSS v.1.1, Quasi-Zenith Satellite System Navigation Service Interface Specification for QZSS, Japan Aerospace Exploration Agency, July 31, 2009

Definition in file mrtk_sbas.c.

Macro Definition Documentation

MAXSBSAGEF

#define MAXSBSAGEF   30.0 /* max age of SBAS fast correction (s) */

Definition at line 57 of file mrtk_sbas.c.

Referenced by sbsfastcorr().

MAXSBSAGEL

#define MAXSBSAGEL   1800.0 /* max age of SBAS long term corr (s) */

Definition at line 58 of file mrtk_sbas.c.

Referenced by sbslongcorr().

P2_11

#define P2_11   4.882812500000000E-04 /* 2^-11 */

Definition at line 54 of file mrtk_sbas.c.

P2_31

#define P2_31   4.656612873077393E-10 /* 2^-31 */

Definition at line 55 of file mrtk_sbas.c.

P2_39

#define P2_39   1.818989403545856E-12 /* 2^-39 */

Definition at line 56 of file mrtk_sbas.c.

Referenced by decode_longcorr1(), and decode_sbstype9().

SYS_GLO

#define SYS_GLO   0x04

Definition at line 45 of file mrtk_sbas.c.

SYS_GPS

#define SYS_GPS   0x01

Definition at line 43 of file mrtk_sbas.c.

SYS_NONE

#define SYS_NONE   0x00

Definition at line 42 of file mrtk_sbas.c.

SYS_QZS

#define SYS_QZS   0x10

Definition at line 46 of file mrtk_sbas.c.

SYS_SBS

#define SYS_SBS   0x02

Definition at line 44 of file mrtk_sbas.c.

WEEKOFFSET

#define WEEKOFFSET   1024 /* gps week offset for NovAtel OEM-3 */

Definition at line 64 of file mrtk_sbas.c.

Referenced by readmsgs().

Function Documentation

cmpmsgs()

int cmpmsgs ( const void * p1, const void * p2 )

static

Definition at line 662 of file mrtk_sbas.c.

References sbsmsg_t::prn, sbsmsg_t::tow, and sbsmsg_t::week.

Referenced by sbsreadmsgt().

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decode_longcorr0()

int decode_longcorr0 ( const sbsmsg_t * msg, int p, sbssat_t * sbssat )

static

Definition at line 382 of file mrtk_sbas.c.

References sbslcorr_t::daf0, sbslcorr_t::daf1, sbslcorr_t::dpos, sbslcorr_t::dvel, getbits(), getbitu(), gpst2time(), sbslcorr_t::iode, sbssatp_t::lcorr, MAXSAT, sbsmsg_t::msg, P2_31, sbssat_t::sat, sbssatp_t::sat, sbslcorr_t::t0, sbsmsg_t::tow, trace(), and sbsmsg_t::week.

Referenced by decode_longcorrh().

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decode_longcorr1()

int decode_longcorr1 ( const sbsmsg_t * msg, int p, sbssat_t * sbssat )

static

Definition at line 405 of file mrtk_sbas.c.

References sbslcorr_t::daf0, sbslcorr_t::daf1, sbslcorr_t::dpos, sbslcorr_t::dvel, getbits(), getbitu(), gpst2time(), sbslcorr_t::iode, sbssatp_t::lcorr, MAXSAT, sbsmsg_t::msg, P2_11, P2_31, P2_39, sbssat_t::sat, sbssatp_t::sat, sbslcorr_t::t0, sbsmsg_t::tow, trace(), and sbsmsg_t::week.

Referenced by decode_longcorrh().

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decode_longcorrh()

int decode_longcorrh ( const sbsmsg_t * msg, int p, sbssat_t * sbssat )

static

Definition at line 434 of file mrtk_sbas.c.

References decode_longcorr0(), decode_longcorr1(), getbitu(), sbssat_t::iodp, sbsmsg_t::msg, and trace().

Referenced by decode_sbstype24(), and decode_sbstype25().

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decode_sbstype1()

int decode_sbstype1 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 191 of file mrtk_sbas.c.

References getbitu(), sbssat_t::iodp, MAXSAT, sbsmsg_t::msg, sbssat_t::nsat, sbssat_t::sat, sbssatp_t::sat, satno(), SYS_GLO, SYS_GPS, SYS_QZS, SYS_SBS, and trace().

Referenced by sbsupdatecorr().

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decode_sbstype18()

int decode_sbstype18 ( const sbsmsg_t * msg, sbsion_t * sbsion )

static

Definition at line 345 of file mrtk_sbas.c.

References sbsigpband_t::bits, getbitu(), sbsion_t::igp, igpband1, igpband2, sbsion_t::iodi, sbsigp_t::lat, sbsigp_t::lon, sbsmsg_t::msg, sbsion_t::nigp, trace(), sbsigpband_t::x, and sbsigpband_t::y.

Referenced by sbsupdatecorr().

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decode_sbstype2()

int decode_sbstype2 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 225 of file mrtk_sbas.c.

References sbsfcorr_t::ai, sbsfcorr_t::dt, sbssatp_t::fcorr, getbits(), getbitu(), gpst2time(), sbsfcorr_t::iodf, sbssat_t::iodp, sbsmsg_t::msg, sbssat_t::nsat, sbsfcorr_t::prc, sbsfcorr_t::rrc, sbssat_t::sat, sbsfcorr_t::t0, gtime_t::time, timediff(), sbsmsg_t::tow, trace(), sbsfcorr_t::udre, and sbsmsg_t::week.

Referenced by sbsupdatecorr().

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decode_sbstype24()

int decode_sbstype24 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 447 of file mrtk_sbas.c.

References decode_longcorrh(), sbssatp_t::fcorr, getbits(), getbitu(), gpst2time(), sbsfcorr_t::iodf, sbssat_t::iodp, sbsmsg_t::msg, sbssat_t::nsat, sbsfcorr_t::prc, sbssat_t::sat, sbsfcorr_t::t0, sbsmsg_t::tow, trace(), sbsfcorr_t::udre, and sbsmsg_t::week.

Referenced by sbsupdatecorr().

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decode_sbstype25()

int decode_sbstype25 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 473 of file mrtk_sbas.c.

References decode_longcorrh(), and trace().

Referenced by sbsupdatecorr().

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decode_sbstype26()

int decode_sbstype26 ( const sbsmsg_t * msg, sbsion_t * sbsion )

static

Definition at line 479 of file mrtk_sbas.c.

References sbsigp_t::delay, getbitu(), sbsigp_t::give, gpst2time(), sbsion_t::igp, MAXBAND, sbsmsg_t::msg, sbsigp_t::t0, sbsmsg_t::tow, trace(), and sbsmsg_t::week.

Referenced by sbsupdatecorr().

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decode_sbstype6()

int decode_sbstype6 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 263 of file mrtk_sbas.c.

References sbssatp_t::fcorr, getbitu(), sbsfcorr_t::iodf, MAXSAT, sbsmsg_t::msg, sbssat_t::nsat, sbssat_t::sat, trace(), and sbsfcorr_t::udre.

Referenced by sbsupdatecorr().

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decode_sbstype7()

int decode_sbstype7 ( const sbsmsg_t * msg, sbssat_t * sbssat )

static

Definition at line 282 of file mrtk_sbas.c.

References sbsfcorr_t::ai, sbssatp_t::fcorr, getbitu(), sbssat_t::iodp, MAXSAT, sbsmsg_t::msg, sbssat_t::nsat, sbssat_t::sat, sbssat_t::tlat, and trace().

Referenced by sbsupdatecorr().

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decode_sbstype9()

int decode_sbstype9 ( const sbsmsg_t * msg, nav_t * nav )

static

Definition at line 299 of file mrtk_sbas.c.

References seph_t::acc, seph_t::af0, seph_t::af1, getbits(), getbitu(), gpst2time(), MINPRNSBS, sbsmsg_t::msg, NSATSBS, P2_31, P2_39, seph_t::pos, sbsmsg_t::prn, seph_t::sat, satno(), nav_s::seph, seph_t::sva, seph_t::svh, SYS_SBS, seph_t::t0, timediff(), seph_t::tof, sbsmsg_t::tow, trace(), seph_t::vel, and sbsmsg_t::week.

Referenced by sbsupdatecorr().

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degfcorr()

double degfcorr ( int ai )

static

Definition at line 185 of file mrtk_sbas.c.

Referenced by sbsfastcorr().

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getfield()

char * getfield ( char * p, int pos )

static

Definition at line 164 of file mrtk_sbas.c.

Referenced by readmsgs().

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getmet()

void getmet ( double lat, double * met )

static

Definition at line 896 of file mrtk_sbas.c.

Referenced by sbstropcorr().

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readmsgs()

void readmsgs ( const char * file, int sel, gtime_t ts, gtime_t te, sbs_t * sbs )

static

Definition at line 568 of file mrtk_sbas.c.

References epoch2time(), free, getfield(), gpst2time(), sbsmsg_t::msg, sbs_t::msgs, sbs_t::n, sbs_t::nmax, sbsmsg_t::prn, screent(), time2gpst(), sbsmsg_t::tow, trace(), sbsmsg_t::week, and WEEKOFFSET.

Referenced by sbsreadmsgt().

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sbsdecodemsg()

int sbsdecodemsg	(	gtime_t	time,
		int	prn,
		const uint32_t *	words,
		sbsmsg_t *	sbsmsg )

Decode SBAS message frame words.

Parameters

[in]	time	Reception time
[in]	prn	SBAS satellite PRN number
[in]	words	SBAS message frame words (9 words)
[out]	sbsmsg	SBAS message

Returns

Status (1:ok, 0:error)

Definition at line 1080 of file mrtk_sbas.c.

References DTTOL, sbsmsg_t::msg, sbsmsg_t::prn, rtk_crc24q(), gtime_t::time, time2gpst(), sbsmsg_t::tow, trace(), and sbsmsg_t::week.

Referenced by decode_rxmsfrb(), and decode_xe5bit().

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sbsfastcorr()

int sbsfastcorr ( gtime_t time, int sat, const sbssat_t * sbssat, double * prc, double * var )

static

Definition at line 997 of file mrtk_sbas.c.

References sbsfcorr_t::ai, degfcorr(), sbsfcorr_t::dt, sbssatp_t::fcorr, MAXSBSAGEF, sbssat_t::nsat, sbsfcorr_t::prc, sbsfcorr_t::rrc, sbssat_t::sat, sbssatp_t::sat, sbsfcorr_t::t0, gtime_t::time, time_str(), timediff(), sbssat_t::tlat, trace(), sbsfcorr_t::udre, and varfcorr().

Referenced by sbssatcorr().

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sbsioncorr()

int sbsioncorr	(	gtime_t	time,
		const nav_t *	nav,
		const double *	pos,
		const double *	azel,
		double *	delay,
		double *	var )

SBAS ionospheric delay correction.

Parameters

[in]	time	Reception time
[in]	nav	Navigation data
[in]	pos	Receiver position {lat, lon, h} (rad, m)
[in]	azel	Azimuth/elevation angle {az, el} (rad)
[out]	delay	Ionospheric delay (L1) (m)
[out]	var	Variance of ionospheric delay (m^2)

Returns

Status (1:ok, 0:error)

Definition at line 823 of file mrtk_sbas.c.

References sbsigp_t::delay, ionppp(), R2D, nav_s::sbsion, searchigp(), timediff(), trace(), and varicorr().

Referenced by ionocorr(), and model_iono().

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sbslongcorr()

int sbslongcorr ( gtime_t time, int sat, const sbssat_t * sbssat, double * drs, double * ddts )

static

Definition at line 962 of file mrtk_sbas.c.

References CLIGHT, sbslcorr_t::daf0, sbslcorr_t::daf1, sbslcorr_t::dpos, sbslcorr_t::dvel, sbssatp_t::lcorr, MAXSBSAGEL, sbssat_t::nsat, sbssat_t::sat, sbssatp_t::sat, satsys(), SYS_SBS, sbslcorr_t::t0, gtime_t::time, time_str(), timediff(), and trace().

Referenced by sbssatcorr().

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sbsoutmsg()

void sbsoutmsg	(	FILE *	fp,
		sbsmsg_t *	sbsmsg )

Output SBAS message record.

Parameters

[in]	fp	Output file pointer
[in]	sbsmsg	SBAS message

Definition at line 732 of file mrtk_sbas.c.

References sbsmsg_t::msg, sbsmsg_t::prn, sbsmsg_t::tow, trace(), and sbsmsg_t::week.

Referenced by convsbs().

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sbsreadmsg()

int sbsreadmsg	(	const char *	file,
		int	sel,
		sbs_t *	sbs )

Read SBAS message file.

Parameters

[in]	file	SBAS message file path
[in]	sel	SBAS satellite selection (0:all)
[in,out]	sbs	SBAS messages

Returns

Status (1:ok, 0:error)

Definition at line 719 of file mrtk_sbas.c.

References sbsreadmsgt(), and trace().

Referenced by readpreceph().

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sbsreadmsgt()

int sbsreadmsgt	(	const char *	file,
		int	sel,
		gtime_t	ts,
		gtime_t	te,
		sbs_t *	sbs )

Read SBAS message file with time span.

Parameters

[in]	file	SBAS message file path
[in]	sel	SBAS satellite selection (0:all)
[in]	ts	Time start (ts.time==0: no limit)
[in]	te	Time end (te.time==0: no limit)
[in,out]	sbs	SBAS messages

Returns

Status (1:ok, 0:error)

Definition at line 682 of file mrtk_sbas.c.

References cmpmsgs(), expath(), free, malloc, MAXEXFILE, sbs_t::msgs, sbs_t::n, readmsgs(), and trace().

Referenced by sbsreadmsg().

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sbssatcorr()

int sbssatcorr	(	gtime_t	time,
		int	sat,
		const nav_t *	nav,
		double *	rs,
		double *	dts,
		double *	var )

SBAS satellite ephemeris and clock correction.

Parameters

[in]	time	Reception time
[in]	sat	Satellite number
[in]	nav	Navigation data
[in,out]	rs	Satellite position/velocity (corrected)
[out]	dts	Satellite clock correction
[out]	var	Variance of correction

Returns

Status (1:ok, 0:error)

Definition at line 1047 of file mrtk_sbas.c.

References CLIGHT, sbsfastcorr(), sbslongcorr(), nav_s::sbssat, and trace().

Referenced by satpos_sbas().

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sbstropcorr()

double sbstropcorr	(	gtime_t	time,
		const double *	pos,
		const double *	azel,
		double *	var )

SBAS tropospheric delay correction.

Parameters

[in]	time	Reception time
[in]	pos	Receiver position {lat, lon, h} (rad, m)
[in]	azel	Azimuth/elevation angle {az, el} (rad)
[out]	var	Variance of tropospheric delay (m^2)

Returns

Tropospheric delay (m)

Definition at line 930 of file mrtk_sbas.c.

References getmet(), PI, R2D, time2doy(), and trace().

Referenced by model_trop(), tropcorr(), and udtrop_ppp().

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sbsupdatecorr()

int sbsupdatecorr	(	const sbsmsg_t *	msg,
		nav_t *	nav )

Update SBAS corrections in navigation data.

Parameters

[in]	msg	SBAS message
[in,out]	nav	Navigation data

Returns

Message type (0:error)

Definition at line 517 of file mrtk_sbas.c.

References decode_sbstype1(), decode_sbstype18(), decode_sbstype2(), decode_sbstype24(), decode_sbstype25(), decode_sbstype26(), decode_sbstype6(), decode_sbstype7(), decode_sbstype9(), getbitu(), sbsmsg_t::msg, nav_s::sbsion, nav_s::sbssat, trace(), and sbsmsg_t::week.

Referenced by convsbs(), inputobs(), and update_sbs().

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searchigp()

void searchigp ( gtime_t time, const double * pos, const sbsion_t * ion, const sbsigp_t ** igp, double * x, double * y )

static

Definition at line 744 of file mrtk_sbas.c.

References sbsigp_t::give, sbsion_t::igp, sbsigp_t::lat, sbsigp_t::lon, MAXBAND, sbsion_t::nigp, R2D, sbsigp_t::t0, gtime_t::time, and trace().

Referenced by sbsioncorr().

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varfcorr()

double varfcorr ( int udre )

static

Definition at line 173 of file mrtk_sbas.c.

Referenced by sbsfastcorr().

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varicorr()

double varicorr ( int give )

static

Definition at line 179 of file mrtk_sbas.c.

Referenced by sbsioncorr().

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Variable Documentation

CLIGHT

const double CLIGHT = 299792458.0

static

Definition at line 51 of file mrtk_sbas.c.

D2R

const double D2R = 3.1415926535897932 / 180.0

static

Definition at line 49 of file mrtk_sbas.c.

igpband1

const sbsigpband_t igpband1[9][8]

Definition at line 86 of file mrtk_sbas.c.

Referenced by decode_sbstype18().

igpband2

const sbsigpband_t igpband2[2][5]

Initial value:

=
    {
     {{60, x5, 1, 72}, {65, x6, 73, 108}, {70, x6, 109, 144}, {75, x6, 145, 180}, {85, x7, 181, 192}},
     {{-60, x5, 1, 72}, {-65, x6, 73, 108}, {-70, x6, 109, 144}, {-75, x6, 145, 180}, {-85, x8, 181, 192}}}

Definition at line 159 of file mrtk_sbas.c.

Referenced by decode_sbstype18().

PI

const double PI = 3.1415926535897932

static

Definition at line 48 of file mrtk_sbas.c.

R2D

const double R2D = 180.0 / 3.1415926535897932

static

Definition at line 50 of file mrtk_sbas.c.

RE_WGS84

const double RE_WGS84 = 6378137.0

static

Definition at line 52 of file mrtk_sbas.c.

x1

const int16_t x1[]

static

Initial value:

= {-75, -65, -55, -50, -45, -40, -35, -30, -25, -20, -15, -10, -5, 0,
                             5,   10,  15,  20,  25,  30,  35,  40,  45,  50,  55,  65,  75, 85}

Definition at line 67 of file mrtk_sbas.c.

x2

const int16_t x2[]

static

Initial value:

= {-55, -50, -45, -40, -35, -30, -25, -20, -15, -10, -5, 0,
                             5,   10,  15,  20,  25,  30,  35,  40,  45,  50,  55}

Definition at line 69 of file mrtk_sbas.c.

x3

const int16_t x3[]

static

Initial value:

= {-75, -65, -55, -50, -45, -40, -35, -30, -25, -20, -15, -10, -5, 0,
                             5,   10,  15,  20,  25,  30,  35,  40,  45,  50,  55,  65,  75}

Definition at line 71 of file mrtk_sbas.c.

x4

const int16_t x4[]

static

Initial value:

= {-85, -75, -65, -55, -50, -45, -40, -35, -30, -25, -20, -15, -10, -5,
                             0,   5,   10,  15,  20,  25,  30,  35,  40,  45,  50,  55,  65,  75}

Definition at line 73 of file mrtk_sbas.c.

x5

const int16_t x5[]

static

Initial value:

= {-180, -175, -170, -165, -160, -155, -150, -145, -140, -135, -130, -125, -120, -115, -110,
                             -105, -100, -95,  -90,  -85,  -80,  -75,  -70,  -65,  -60,  -55,  -50,  -45,  -40,  -35,
                             -30,  -25,  -20,  -15,  -10,  -5,   0,    5,    10,   15,   20,   25,   30,   35,   40,
                             45,   50,   55,   60,   65,   70,   75,   80,   85,   90,   95,   100,  105,  110,  115,
                             120,  125,  130,  135,  140,  145,  150,  155,  160,  165,  170,  175}

Definition at line 75 of file mrtk_sbas.c.

x6

const int16_t x6[]

static

Initial value:

= {-180, -170, -160, -150, -140, -130, -120, -110, -100, -90, -80, -70,
                             -60,  -50,  -40,  -30,  -20,  -10,  0,    10,   20,   30,  40,  50,
                             60,   70,   80,   90,   100,  110,  120,  130,  140,  150, 160, 170}

Definition at line 80 of file mrtk_sbas.c.

x7

const int16_t x7[] = {-180, -150, -120, -90, -60, -30, 0, 30, 60, 90, 120, 150}

static

Definition at line 83 of file mrtk_sbas.c.

x8

const int16_t x8[] = {-170, -140, -110, -80, -50, -20, 10, 40, 70, 100, 130, 160}

static

Definition at line 84 of file mrtk_sbas.c.