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| author | Eric S. Raymond <esr@thyrsus.com> | 2011-04-10 22:19:51 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-04-10 22:19:51 -0400 |
| commit | 4fda87b5d4dc3dd8200e5f74d6fefc2a32616d6a (patch) | |
| tree | 96fa92dc591ac358b39e52537e17d5635e5884e4 /driver_rtcm3.c | |
| parent | 090692924a259d90db1374e35463adb19245b3d2 (diff) | |
| download | gpsd-4fda87b5d4dc3dd8200e5f74d6fefc2a32616d6a.tar.gz | |
RTCM3 decoding, more progress.
Diffstat (limited to 'driver_rtcm3.c')
| -rw-r--r-- | driver_rtcm3.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/driver_rtcm3.c b/driver_rtcm3.c index de2fe16a..cd61f542 100644 --- a/driver_rtcm3.c +++ b/driver_rtcm3.c @@ -46,13 +46,14 @@ BSD terms apply: see the file COPYING in the distribution root for details. /* scaling constants for RTCM3 real number types */ #define GPS_PSEUDORANGE_RESOLUTION 0.2 /* DF011 */ #define PSEUDORANGE_DIFF_RESOLUTION 0.0005 /* DF012,DF042 */ -#define CARRIER_NOISE_RATIO_UNITS 0.25 /* DF015 */ +#define CARRIER_NOISE_RATIO_UNITS 0.25 /* DF015, DF045, DF50 */ #define ANTENNA_POSITION_RESOLUTION 0.0001 /* DF025-027 */ #define GLONASS_PSEUDORANGE_RESOLUTION 0.02 /* DF041 */ #define ANTENNA_DEGREE_RESOLUTION 25e-6 /* DF062 */ #define GPS_EPOCH_TIME_RESOLUTION 0.1 /* DF065 */ #define PHASE_CORRECTION_RESOLUTION 0.5 /* DF069-070 */ + /* Other magic values */ #define GPS_INVALID_PSEUDORANGE 0x80000 /* DF012 */ #define GLONASS_INVALID_RANGEINCR 0x2000 /* DF047 */ @@ -330,7 +331,7 @@ void rtcm3_unpack( /*@out@*/ struct rtcm3_t *rtcm, char *buf) RANGEDIFF(R1012.L1, 20); R1012.L1.locktime = (unsigned char)ugrab(7); R1012.L1.ambiguity = (unsigned char)ugrab(7); - R1012.L1.CNR = (unsigned char)ugrab(8); + R1012.L1.CNR = (unsigned char)ugrab(8) * CARRIER_NOISE_RATIO_UNITS; R1012.L2.indicator = (bool)ugrab(2); rangeincr = ugrab(14); if (rangeincr == GLONASS_INVALID_RANGEINCR) @@ -339,7 +340,7 @@ void rtcm3_unpack( /*@out@*/ struct rtcm3_t *rtcm, char *buf) R1012.L2.pseudorange = R1012.L1.pseudorange + (rangeincr * GLONASS_PSEUDORANGE_RESOLUTION); RANGEDIFF(R1012.L2, 20); R1012.L2.locktime = (unsigned char)sgrab(7); - R1012.L2.CNR = (unsigned char)ugrab(8); + R1012.L2.CNR = (unsigned char)ugrab(8) * CARRIER_NOISE_RATIO_UNITS; } #undef R1012 break; |