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septentrio sbslongcorrh: correct time decoding #458

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Merged
JensReimann merged 1 commit into from
Aug 29, 2024
Merged

septentrio sbslongcorrh: correct time decoding #458

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11 changes: 4 additions & 7 deletions src/rcv/septentrio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3497,9 +3497,6 @@ static int decode_sbslongcorrh(raw_t* raw)
int prn, i;
uint8_t *p = raw->buff+8;
uint8_t count, sbLength, no;
uint32_t tow;
uint16_t week;
int64_t t;

trace(4, "SBF decode_sbslongcorrh:\n");

Expand All @@ -3518,8 +3515,8 @@ static int decode_sbslongcorrh(raw_t* raw)
sprintf(raw->msgtype, "SBF SBAS Long Term Corrections from PRN=%d", prn);
}

tow = U4(p + 0)/1000;
week = U2(p+4);
double tow = U4(p + 0) * 0.001;
uint16_t week = U2(p+4);

count = U1(p+7);
sbLength = U1(p+8);
Expand All @@ -3542,8 +3539,8 @@ static int decode_sbslongcorrh(raw_t* raw)

raw->nav.sbssat.sat[no-1].lcorr.daf1 = R4(p+12+i*sbLength+32);

/* time of day */
t = (int)U4(p+12+i*sbLength+32)-(int)tow % 86400; /* calculate day offset from TOW */
/* Time of day. Calculate day offset from TOW. */
double t = U4(p+12+i*sbLength+36) - fmod(tow, 86400);
if (t <= -43200) t += 86400;
else if (t > 43200) t -= 86400;
raw->nav.sbssat.sat[no-1].lcorr.t0 = gpst2time(week, tow+t);
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