Merge pull request #396 from jnunyez/leap-second-in-command
add -L option for leap event emulation
This commit is contained in:
OSQZSS
GitHub
commit
8cf4930b46
@ -79,6 +79,7 @@ Options:
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-g <nmea_gga> NMEA GGA stream (dynamic mode)
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-c <location> ECEF X,Y,Z in meters (static mode) e.g. 3967283.15,1022538.18,4872414.48
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-l <location> Lat,Lon,Hgt (static mode) e.g. 30.286502,120.032669,100
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-L <wnslf,dn,dtslf> User leap future event in GPS week number, day number, next leap second e.g. 2347,3,19
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-t <date,time> Scenario start time YYYY/MM/DD,hh:mm:ss
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-T <date,time> Overwrite TOC and TOE to scenario start time
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-d <duration> Duration [sec] (dynamic mode max: 300 static mode max: 86400)
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150
gpssim.c
150
gpssim.c
@ -138,7 +138,7 @@ void codegen(int *ca, int prn)
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252, 254, 255, 256, 257, 258, 469, 470, 471, 472,
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473, 474, 509, 512, 513, 514, 515, 516, 859, 860,
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861, 862};
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int g1[CA_SEQ_LEN], g2[CA_SEQ_LEN];
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int r1[N_DWRD_SBF], r2[N_DWRD_SBF];
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int c1, c2;
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@ -157,7 +157,7 @@ void codegen(int *ca, int prn)
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c1 = r1[2]*r1[9];
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c2 = r2[1]*r2[2]*r2[5]*r2[7]*r2[8]*r2[9];
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for (j=9; j>0; j--)
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for (j=9; j>0; j--)
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{
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r1[j] = r1[j-1];
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r2[j] = r2[j-1];
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@ -168,7 +168,7 @@ void codegen(int *ca, int prn)
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for (i=0,j=CA_SEQ_LEN-delay[prn-1]; i<CA_SEQ_LEN; i++,j++)
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ca[i] = (1-g1[i]*g2[j%CA_SEQ_LEN])/2;
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return;
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}
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@ -195,7 +195,7 @@ void date2gps(const datetime_t *t, gpstime_t *g)
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// Convert time to GPS weeks and seconds.
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g->week = de / 7;
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g->sec = (double)(de%7)*SECONDS_IN_DAY + t->hh*SECONDS_IN_HOUR
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g->sec = (double)(de%7)*SECONDS_IN_DAY + t->hh*SECONDS_IN_HOUR
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+ t->mm*SECONDS_IN_MINUTE + t->sec;
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return;
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@ -417,7 +417,7 @@ void satpos(ephem_t eph, gpstime_t g, double *pos, double *vel, double *clk)
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mk = eph.m0 + eph.n*tk;
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ek = mk;
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ekold = ek + 1.0;
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OneMinusecosE = 0; // Suppress the uninitialized warning.
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while(fabs(ek-ekold)>1.0E-14)
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{
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@ -479,8 +479,8 @@ void satpos(ephem_t eph, gpstime_t g, double *pos, double *vel, double *clk)
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else if(tk<-SECONDS_IN_HALF_WEEK)
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tk += SECONDS_IN_WEEK;
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clk[0] = eph.af0 + tk*(eph.af1 + tk*eph.af2) + relativistic - eph.tgd;
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clk[1] = eph.af1 + 2.0*tk*eph.af2;
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clk[0] = eph.af0 + tk*(eph.af1 + tk*eph.af2) + relativistic - eph.tgd;
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clk[1] = eph.af1 + 2.0*tk*eph.af2;
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return;
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}
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@ -529,8 +529,8 @@ void eph2sbf(const ephem_t eph, const ionoutc_t ionoutc, unsigned long sbf[5][N_
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signed long alpha0,alpha1,alpha2,alpha3;
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signed long beta0,beta1,beta2,beta3;
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signed long A0,A1;
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signed long dtls,dtlsf;
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unsigned long tot,wnt,wnlsf,dn;
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signed long dtls;
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unsigned long tot,wnt,wnlsf,dtlsf,dn;
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unsigned long sbf4_page18_svId = 56UL;
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// FIXED: This has to be the "transmission" week number, not for the ephemeris reference time
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@ -578,13 +578,21 @@ void eph2sbf(const ephem_t eph, const ionoutc_t ionoutc, unsigned long sbf[5][N_
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dtls = (signed long)(ionoutc.dtls);
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tot = (unsigned long)(ionoutc.tot/4096);
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wnt = (unsigned long)(ionoutc.wnt%256);
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// TO DO: Specify scheduled leap seconds in command options
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// 2016/12/31 (Sat) -> WNlsf = 1929, DN = 7 (http://navigationservices.agi.com/GNSSWeb/)
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// Days are counted from 1 to 7 (Sunday is 1).
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wnlsf = 1929%256;
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dn = 7;
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dtlsf = 18;
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if (ionoutc.leapen==TRUE)
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{
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wnlsf = (unsigned long)(ionoutc.wnlsf%256);
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dn = (unsigned long)(ionoutc.dn);
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dtlsf = (unsigned long)(ionoutc.dtlsf);
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}
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else
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{
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wnlsf = 1929%256;
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dn = 7;
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dtlsf = 18;
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}
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// Subframe 1
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sbf[0][0] = 0x8B0000UL<<6;
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sbf[0][1] = 0x1UL<<8;
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@ -634,7 +642,7 @@ void eph2sbf(const ephem_t eph, const ionoutc_t ionoutc, unsigned long sbf[5][N_
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sbf[3][7] = ((A0&0xFFUL)<<22) | ((tot&0xFFUL)<<14) | ((wnt&0xFFUL)<<6);
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sbf[3][8] = ((dtls&0xFFUL)<<22) | ((wnlsf&0xFFUL)<<14) | ((dn&0xFFUL)<<6);
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sbf[3][9] = (dtlsf&0xFFUL)<<22;
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}
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else
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{
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@ -698,13 +706,13 @@ unsigned long computeChecksum(unsigned long source, int nib)
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Bits 31 to 30 = 2 LSBs of the previous transmitted word, D29* and D30*
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Bits 29 to 6 = Source data bits, d1, d2, ..., d24
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Bits 5 to 0 = Empty parity bits
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*/
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*/
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/*
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Bits 31 to 30 = 2 LSBs of the previous transmitted word, D29* and D30*
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Bits 29 to 6 = Data bits transmitted by the SV, D1, D2, ..., D24
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Bits 5 to 0 = Computed parity bits, D25, D26, ..., D30
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*/
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*/
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/*
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1 2 3
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@ -718,7 +726,7 @@ unsigned long computeChecksum(unsigned long source, int nib)
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D30 00 1011 0111 1010 1000 1001 1100 0000
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*/
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unsigned long bmask[6] = {
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unsigned long bmask[6] = {
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0x3B1F3480UL, 0x1D8F9A40UL, 0x2EC7CD00UL,
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0x1763E680UL, 0x2BB1F340UL, 0x0B7A89C0UL };
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@ -750,7 +758,7 @@ unsigned long computeChecksum(unsigned long source, int nib)
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D |= ((D30 + countBits(bmask[3] & d)) % 2) << 2;
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D |= ((D30 + countBits(bmask[4] & d)) % 2) << 1;
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D |= ((D29 + countBits(bmask[5] & d)) % 2);
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D &= 0x3FFFFFFFUL;
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//D |= (source & 0xC0000000UL); // Add D29* and D30* from source data bits
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@ -774,7 +782,7 @@ int replaceExpDesignator(char *str, int len)
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str[i] = 'E';
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}
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}
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return(n);
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}
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@ -821,7 +829,7 @@ int readRinexNavAll(ephem_t eph[][MAX_SAT], ionoutc_t *ionoutc, const char *fnam
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{
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FILE *fp;
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int ieph;
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int sv;
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char str[MAX_CHAR];
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char tmp[20];
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@ -871,6 +879,8 @@ int readRinexNavAll(ephem_t eph[][MAX_SAT], ionoutc_t *ionoutc, const char *fnam
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replaceExpDesignator(tmp, 12);
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ionoutc->alpha3 = atof(tmp);
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//read wntlsf, dn, and dtlsf from fil
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flags |= 0x1;
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}
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else if (strncmp(str+60, "ION BETA", 8)==0)
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@ -974,13 +984,13 @@ int readRinexNavAll(ephem_t eph[][MAX_SAT], ionoutc_t *ionoutc, const char *fnam
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t.sec = atof(tmp);
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date2gps(&t, &g);
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if (g0.week==-1)
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g0 = g;
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// Check current time of clock
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dt = subGpsTime(g, g0);
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if (dt>SECONDS_IN_HOUR)
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{
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g0 = g;
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@ -1096,7 +1106,7 @@ int readRinexNavAll(ephem_t eph[][MAX_SAT], ionoutc_t *ionoutc, const char *fnam
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tmp[19] = 0;
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replaceExpDesignator(tmp, 19);
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eph[ieph][sv].crc = atof(tmp);
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strncpy(tmp, str+41, 19);
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tmp[19] = 0;
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replaceExpDesignator(tmp, 19);
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@ -1162,7 +1172,7 @@ int readRinexNavAll(ephem_t eph[][MAX_SAT], ionoutc_t *ionoutc, const char *fnam
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}
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fclose(fp);
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if (g0.week>=0)
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ieph += 1; // Number of sets of ephemerides
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@ -1194,7 +1204,7 @@ double ionosphericDelay(const ionoutc_t *ionoutc, gpstime_t g, double *llh, doub
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// Earth's central angle between the user position and the earth projection of
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// ionospheric intersection point (semi-circles)
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psi = 0.0137/(E + 0.11) - 0.022;
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// Geodetic latitude of the earth projection of the ionospheric intersection point
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// (semi-circles)
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phi_i = phi_u + psi*cos(azel[0]);
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@ -1262,7 +1272,7 @@ void computeRange(range_t *rho, ephem_t eph, ionoutc_t *ionoutc, gpstime_t g, do
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double llh[3],neu[3];
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double tmat[3][3];
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// SV position at time of the pseudorange observation.
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satpos(eph, g, pos, vel, clk);
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@ -1321,7 +1331,7 @@ void computeCodePhase(channel_t *chan, range_t rho1, double dt)
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double ms;
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int ims;
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double rhorate;
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// Pseudorange rate.
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rhorate = (rho1.range - chan->rho0.range)/dt;
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@ -1337,7 +1347,7 @@ void computeCodePhase(channel_t *chan, range_t rho1, double dt)
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chan->iword = ims/600; // 1 word = 30 bits = 600 ms
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ims -= chan->iword*600;
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chan->ibit = ims/20; // 1 bit = 20 code = 20 ms
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ims -= chan->ibit*20;
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@ -1409,7 +1419,7 @@ int readUserMotionLLH(double xyz[USER_MOTION_SIZE][3], const char *filename)
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if (EOF==sscanf(str, "%lf,%lf,%lf,%lf", &t, &llh[0], &llh[1], &llh[2])) // Read CSV line
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break;
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if (llh[0] > 90.0 || llh[0] < -90.0 || llh[1]>180.0 || llh[1] < -180.0)
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{
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fprintf(stderr, "ERROR: Invalid file format (time[s], latitude[deg], longitude[deg], height [m].\n");
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@ -1450,11 +1460,11 @@ int readNmeaGGA(double xyz[USER_MOTION_SIZE][3], const char *filename)
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if (strncmp(token+3, "GGA", 3)==0)
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{
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token = strtok(NULL, ","); // Date and time
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token = strtok(NULL, ","); // Latitude
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strncpy(tmp, token, 2);
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tmp[2] = 0;
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llh[0] = atof(tmp) + atof(token+2)/60.0;
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token = strtok(NULL, ","); // North or south
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@ -1462,11 +1472,11 @@ int readNmeaGGA(double xyz[USER_MOTION_SIZE][3], const char *filename)
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llh[0] *= -1.0;
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llh[0] /= R2D; // in radian
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token = strtok(NULL, ","); // Longitude
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strncpy(tmp, token, 3);
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tmp[3] = 0;
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llh[1] = atof(tmp) + atof(token+3)/60.0;
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token = strtok(NULL, ","); // East or west
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@ -1480,13 +1490,13 @@ int readNmeaGGA(double xyz[USER_MOTION_SIZE][3], const char *filename)
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token = strtok(NULL, ","); // HDOP
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token = strtok(NULL, ","); // Altitude above meas sea level
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llh[2] = atof(token);
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token = strtok(NULL, ","); // in meter
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token = strtok(NULL, ","); // Geoid height above WGS84 ellipsoid
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llh[2] += atof(token);
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// Convert geodetic position into ECEF coordinates
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@ -1495,7 +1505,7 @@ int readNmeaGGA(double xyz[USER_MOTION_SIZE][3], const char *filename)
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xyz[numd][0] = pos[0];
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xyz[numd][1] = pos[1];
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xyz[numd][2] = pos[2];
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// Update the number of track points
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numd++;
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@ -1703,6 +1713,7 @@ void usage(void)
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" -g <nmea_gga> NMEA GGA stream (dynamic mode)\n"
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" -c <location> ECEF X,Y,Z in meters (static mode) e.g. 3967283.154,1022538.181,4872414.484\n"
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" -l <location> Lat, lon, height (static mode) e.g. 35.681298,139.766247,10.0\n"
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" -L <wnslf,dn,dtslf> User leap future event in GPS week number, day number, next leap second e.g. 2347,3,19\n"
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" -t <date,time> Scenario start time YYYY/MM/DD,hh:mm:ss\n"
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" -T <date,time> Overwrite TOC and TOE to scenario start time\n"
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" -d <duration> Duration [sec] (dynamic mode max: %.0f, static mode max: %d)\n"
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@ -1727,9 +1738,9 @@ int main(int argc, char *argv[])
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int neph,ieph;
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ephem_t eph[EPHEM_ARRAY_SIZE][MAX_SAT];
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gpstime_t g0;
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double llh[3];
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int i;
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channel_t chan[MAX_CHAN];
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double elvmask = 0.0; // in degree
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@ -1796,6 +1807,7 @@ int main(int argc, char *argv[])
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duration = (double)iduration/10.0; // Default duration
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verb = FALSE;
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ionoutc.enable = TRUE;
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ionoutc.leapen = FALSE;
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if (argc<3)
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{
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@ -1803,7 +1815,7 @@ int main(int argc, char *argv[])
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exit(1);
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}
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while ((result=getopt(argc,argv,"e:u:x:g:c:l:o:s:b:T:t:d:ipv"))!=-1)
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while ((result=getopt(argc,argv,"e:u:x:g:c:l:o:s:b:L:T:t:d:ipv"))!=-1)
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{
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switch (result)
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{
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@ -1857,13 +1869,33 @@ int main(int argc, char *argv[])
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exit(1);
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}
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break;
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case 'L':
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// enable custom Leap Event
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ionoutc.leapen = TRUE;
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sscanf(optarg,"%d,%d,%d", &ionoutc.wnlsf, &ionoutc.dn, &ionoutc.dtlsf);
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if (ionoutc.dn<1 && ionoutc.dn>7)
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{
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fprintf(stderr, "ERROR: Invalid GPS day number");
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exit(1);
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}
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if (ionoutc.wnlsf<0)
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{
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fprintf(stderr, "ERROR: Invalid GPS week number");
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exit(1);
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}
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if (ionoutc.dtlsf<-128 && ionoutc.dtlsf>127)
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{
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fprintf(stderr, "ERROR: Invalid delta leap second");
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exit(1);
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}
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break;
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case 'T':
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timeoverwrite = TRUE;
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if (strncmp(optarg, "now", 3)==0)
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{
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time_t timer;
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struct tm *gmt;
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time(&timer);
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gmt = gmtime(&timer);
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@ -1875,7 +1907,7 @@ int main(int argc, char *argv[])
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t0.sec = (double)gmt->tm_sec;
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date2gps(&t0, &g0);
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break;
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}
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case 't':
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@ -1932,7 +1964,7 @@ int main(int argc, char *argv[])
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}
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iduration = (int)(duration*10.0 + 0.5);
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// Buffer size
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// Buffer size
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samp_freq = floor(samp_freq/10.0);
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iq_buff_size = (int)samp_freq; // samples per 0.1sec
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samp_freq *= 10.0;
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@ -1970,11 +2002,11 @@ int main(int argc, char *argv[])
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// Set user initial position
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xyz2llh(xyz[0], llh);
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}
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else
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{
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}
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else
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{
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// Static geodetic coordinates input mode: "-l"
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// Added by scateu@gmail.com
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// Added by scateu@gmail.com
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fprintf(stderr, "Using static location mode.\n");
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// Set simulation duration
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@ -2006,16 +2038,16 @@ int main(int argc, char *argv[])
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if ((verb==TRUE)&&(ionoutc.vflg==TRUE))
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{
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fprintf(stderr, " %12.3e %12.3e %12.3e %12.3e\n",
|
||||
fprintf(stderr, " %12.3e %12.3e %12.3e %12.3e\n",
|
||||
ionoutc.alpha0, ionoutc.alpha1, ionoutc.alpha2, ionoutc.alpha3);
|
||||
fprintf(stderr, " %12.3e %12.3e %12.3e %12.3e\n",
|
||||
fprintf(stderr, " %12.3e %12.3e %12.3e %12.3e\n",
|
||||
ionoutc.beta0, ionoutc.beta1, ionoutc.beta2, ionoutc.beta3);
|
||||
fprintf(stderr, " %19.11e %19.11e %9d %9d\n",
|
||||
ionoutc.A0, ionoutc.A1, ionoutc.tot, ionoutc.wnt);
|
||||
fprintf(stderr, "%6d\n", ionoutc.dtls);
|
||||
}
|
||||
|
||||
for (sv=0; sv<MAX_SAT; sv++)
|
||||
for (sv=0; sv<MAX_SAT; sv++)
|
||||
{
|
||||
if (eph[0][sv].vflg==1)
|
||||
{
|
||||
@ -2086,10 +2118,10 @@ int main(int argc, char *argv[])
|
||||
if (subGpsTime(g0, gmin)<0.0 || subGpsTime(gmax, g0)<0.0)
|
||||
{
|
||||
fprintf(stderr, "ERROR: Invalid start time.\n");
|
||||
fprintf(stderr, "tmin = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
fprintf(stderr, "tmin = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
tmin.y, tmin.m, tmin.d, tmin.hh, tmin.mm, tmin.sec,
|
||||
gmin.week, gmin.sec);
|
||||
fprintf(stderr, "tmax = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
fprintf(stderr, "tmax = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
tmax.y, tmax.m, tmax.d, tmax.hh, tmax.mm, tmax.sec,
|
||||
gmax.week, gmax.sec);
|
||||
exit(1);
|
||||
@ -2102,7 +2134,7 @@ int main(int argc, char *argv[])
|
||||
t0 = tmin;
|
||||
}
|
||||
|
||||
fprintf(stderr, "Start time = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
fprintf(stderr, "Start time = %4d/%02d/%02d,%02d:%02d:%02.0f (%d:%.0f)\n",
|
||||
t0.y, t0.m, t0.d, t0.hh, t0.mm, t0.sec, g0.week, g0.sec);
|
||||
fprintf(stderr, "Duration = %.1f [sec]\n", ((double)numd)/10.0);
|
||||
|
||||
@ -2199,7 +2231,7 @@ int main(int argc, char *argv[])
|
||||
for(i=0; i<MAX_CHAN; i++)
|
||||
{
|
||||
if (chan[i].prn>0)
|
||||
fprintf(stderr, "%02d %6.1f %5.1f %11.1f %5.1f\n", chan[i].prn,
|
||||
fprintf(stderr, "%02d %6.1f %5.1f %11.1f %5.1f\n", chan[i].prn,
|
||||
chan[i].azel[0]*R2D, chan[i].azel[1]*R2D, chan[i].rho0.d, chan[i].rho0.iono_delay);
|
||||
}
|
||||
|
||||
@ -2287,12 +2319,12 @@ int main(int argc, char *argv[])
|
||||
chan[i].code_phase -= CA_SEQ_LEN;
|
||||
|
||||
chan[i].icode++;
|
||||
|
||||
|
||||
if (chan[i].icode>=20) // 20 C/A codes = 1 navigation data bit
|
||||
{
|
||||
chan[i].icode = 0;
|
||||
chan[i].ibit++;
|
||||
|
||||
|
||||
if (chan[i].ibit>=30) // 30 navigation data bits = 1 word
|
||||
{
|
||||
chan[i].ibit = 0;
|
||||
@ -2352,7 +2384,7 @@ int main(int argc, char *argv[])
|
||||
iq8_buff[isamp] = iq_buff[isamp]>>4; // 12-bit bladeRF -> 8-bit HackRF
|
||||
|
||||
fwrite(iq8_buff, 1, 2*iq_buff_size, fp);
|
||||
}
|
||||
}
|
||||
else // data_format==SC16
|
||||
{
|
||||
fwrite(iq_buff, 2, 2*iq_buff_size, fp);
|
||||
@ -2387,11 +2419,11 @@ int main(int argc, char *argv[])
|
||||
for (i=0; i<MAX_CHAN; i++)
|
||||
{
|
||||
// Generate new subframes if allocated
|
||||
if (chan[i].prn!=0)
|
||||
if (chan[i].prn!=0)
|
||||
eph2sbf(eph[ieph][chan[i].prn-1], ionoutc, chan[i].sbf);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user