// Read tle
orbit_t read_tle(char *filename,int satno)
{
int i;
FILE *file;
orbit_t orb;
file=fopen(filename,"r");
if (file==NULL)
fatal_error("Failed to open %s\n",filename);
// Read TLE
read_twoline(file,satno,&orb);
fclose(file);
return orb;
}
int main(int argc,char *argv[])
{
int arg=0,satno=0,header=0,oneline=0,no,name=0,desig=0;
char tlefile[LIM];
char line0[LIM],line1[LIM],line2[LIM],nfd[32];
FILE *file;
orbit_t orb;
float aodp,perigee,apogee,period;
int info=0;
double mjd;
char *env;
env=getenv("ST_TLEDIR");
sprintf(tlefile,"%s/bulk.tle",env);
// Decode options
while ((arg=getopt(argc,argv,"c:i:aH1ftnd"))!=-1) {
switch (arg) {
case 'c':
strcpy(tlefile,optarg);
break;
case '1':
oneline=1;
break;
case 'f':
oneline=2;
break;
case 'n':
name=1;
break;
case 'd':
desig=1;
break;
case 'i':
satno=atoi(optarg);
break;
case 'a':
info=1;
break;
case 'H':
header=1;
break;
case 'h':
usage();
return 0;
break;
default:
usage();
return 0;
}
}
if (oneline==0) {
// Open file
file=fopen(tlefile,"rb");
if (file==NULL)
fatal_error("File open failed for reading \"%s\"",tlefile);
while (fgetline(file,line1,LIM)>0) {
// Find TLE line
if (line1[0]=='1') {
fgetline(file,line2,LIM);
sscanf(line1+2,"%d",&no);
if (satno==0 || satno==no) {
if (name==1 && desig==0)
printf("%s\n",line0);
else if (name==0 && desig==1)
printf("%.8s\n",line1+9);
else
printf("%s\n%s\n%s\n",line0,line1,line2);
}
}
strcpy(line0,line1);
}
/*
// Loop over file
while (fgetline(file,line0,LIM)>0) {
// Read data lines
if (line0[0]!='1' || line0[0]!='2') {
fgetline(file,line1,LIM);
fgetline(file,line2,LIM);
sscanf(line1+2,"%d",&no);
if (satno==0 || satno==no) {
if (name==1 && desig==0)
printf("%s\n",line0);
else if (name==0 && desig==1)
printf("%.8s\n",line1+9);
else
printf("%s\n%s\n%s\n",line0,line1,line2);
}
} else if (line0[0]=='1') {
fgetline(file,line2,LIM);
sscanf(line1+2,"%d",&no);
if (satno==0 || satno==no)
printf("%s\n%s\n",line0,line2);
}
}
*/
fclose(file);
} else if (oneline==1) {
// Open file
file=fopen(tlefile,"rb");
if (file==NULL)
fatal_error("File open failed for reading \"%s\"",tlefile);
if (info==0 && header==1)
printf("SATNO YEAR DOY INCL ASCN ARGP MA ECC MM\n");
if (info==1 && header==1)
printf("SATNO SEMI PERIGEE APOGEE PERIOD ECC\n");
// Loop over file
while (read_twoline(file,satno,&orb)==0) {
orbit(orb,&aodp,&perigee,&apogee,&period);
mjd=doy2mjd(orb.ep_year,orb.ep_day);
mjd2nfd(mjd,nfd);
if (info==0) printf("%05d %10.4lf %8.4f %8.4f %8.4f %8.4f %8.6f %8.5f\n",orb.satno,mjd,DEG(orb.eqinc),DEG(orb.ascn),DEG(orb.argp),DEG(orb.mnan),orb.ecc,orb.rev);
if (info==1) printf("%05d %6.0f x %6.0f x %6.2f %8.2f %8.6f %14.8lf\n",orb.satno,perigee,apogee,DEG(orb.eqinc),period,orb.ecc,mjd);
}
fclose(file);
} else if (oneline==2) {
// Open file
file=fopen(tlefile,"rb");
if (file==NULL)
fatal_error("File open failed for reading \"%s\"",tlefile);
if (info==0 && header==1)
printf("SATNO YEAR DOY INCL ASCN ARGP MA ECC MM\n");
if (info==1 && header==1)
printf("SATNO SEMI PERIGEE APOGEE PERIOD ECC\n");
// Loop over file
while (read_twoline(file,satno,&orb)==0)
print_orb(&orb);
fclose(file);
}
return 0;
}
int main(int argc, char *argv[])
{
orbit_t orb;
xyz_t pos, vel;
double jd, tsince;
long satno=0;
int imode;
char filename[ST_SIZE] = "twoline.txt";
FILE *fp=NULL;
char ctrl_name[ST_SIZE] = "ssd.txt";
long ii,imax=0,iend=0;
/* Data for the prediction type and time period */
double ts = 0.0, delta=0.0; /* Time since TLE epoch to start predictions */
int bad=1;
int c;
time_t tnow;
time(&tnow);
fprintf(stderr, "# Start time = %s", ctime(&tnow));
GETOPT(c, options)
{
case 'c': strncpy(ctrl_name, optarg, ST_SIZE-1); break;
case 'i': strncpy(filename, optarg, ST_SIZE-1); break;
case 's': satno = atol(optarg); break;
case 'v': Verbose = atoi(optarg); break;
default:
fprintf(stderr, usage, argv[0]);
exit(1);
break;
}
if((fp=fopen(ctrl_name, "rb")) != NULL)
{
if(fscanf(fp, " %lf %lf %ld %ld %ld", &ts, &delta, &imax, &iend, &satno) == 5)
{
bad=0;
}
fclose(fp);
}
if(bad)
{
fprintf(stderr, "Failed to read ssd.txt file for 'tstart,delta,imax,isat'\n");
return 1;
}
fp = fopen(filename, "rb");
if(fp == NULL)
{
fatal_error("File open failed for reading \"%s\"", filename);
}
while(read_twoline(fp, satno, &orb) == 0)
{
print_orb(&orb);
Isat = orb.satno;
imode = init_sgdp4(&orb);
switch(imode)
{
case SGDP4_ERROR : printf("# SGDP error\n"); break;
case SGDP4_NOT_INIT : printf("# SGDP not init\n"); break;
case SGDP4_ZERO_ECC : printf("# SGDP zero ecc\n"); break;
case SGDP4_NEAR_SIMP : printf("# SGP4 simple\n"); break;
case SGDP4_NEAR_NORM : printf("# SGP4 normal\n"); break;
case SGDP4_DEEP_NORM : printf("# SDP4 normal\n"); break;
case SGDP4_DEEP_RESN : printf("# SDP4 resonant\n"); break;
case SGDP4_DEEP_SYNC : printf("# SDP4 synchronous\n"); break;
default: printf("# SGDP mode not recognised!\n");
}
if(imode == SGDP4_ERROR) continue;
printf("# Satellite number\n");
printf("%05ld\n", (long)orb.satno);
printf("# Tsince X Y Z Xdot Ydot Zdot\n");
/* Run test like the original SGP doccument */
for(ii=0; ii <= imax; ii++)
{
if(ii != iend)
{
tsince=ts + ii*delta;
}
else
{
tsince=ts + delta;
}
jd = SGDP4_jd0 + tsince / 1440.0;
if(satpos_xyz(jd, &pos, &vel) == SGDP4_ERROR) break;
printf("%12.4f %16.8f %16.8f %16.8f %16.12f %16.12f %16.12f\n",
tsince,
pos.x, pos.y, pos.z,
vel.x, vel.y, vel.z);
}
}
time(&tnow);
fprintf(stderr, "# End time = %s", ctime(&tnow));
exit(0);
return 0;
}
int main(int argc,char *argv[])
{
int imode,satno=0,arg,usecatalog=0,satnomin,flag=0;
FILE *file;
orbit_t orb;
xyz_t r,v,n,m,nm,r0,v0,mr,mv;
char tlefile[LIM],catalog[LIM],nfd[32];
char line1[80],line2[80],desig[20];
double mjd,ra,de,dr,drmin,dmr,dmv;
char *env;
// Get environment variable
env=getenv("ST_TLEDIR");
sprintf(tlefile,"%s/classfd.tle",env);
// Set date
nfd_now(nfd);
mjd=nfd2mjd(nfd);
// Decode options
while ((arg=getopt(argc,argv,"C:c:i:t:m:h"))!=-1) {
switch (arg) {
case 't':
strcpy(nfd,optarg);
mjd=nfd2mjd(nfd);
break;
case 'm':
mjd=(double) atof(optarg);
break;
case 'c':
strcpy(tlefile,optarg);
break;
case 'C':
strcpy(catalog,optarg);
usecatalog=1;
break;
case 'i':
satno=atoi(optarg);
break;
case 'h':
usage();
return 0;
break;
default:
usage();
return 0;
}
}
// Reloop stderr
freopen("/tmp/stderr.txt","w",stderr);
// Open file
file=fopen(tlefile,"r");
while (read_twoline(file,satno,&orb)==0) {
format_tle(orb,line1,line2);
// Propagate
imode=init_sgdp4(&orb);
imode=satpos_xyz(mjd+2400000.5,&r0,&v0);
// Compute normal
n=cross(r0,v0);
ra=modulo(atan2(n.y,n.x)*R2D,360.0);
de=asin(n.z/magnitude(n))*R2D;
if (usecatalog==0)
printf("%05d %14.8lf %10.6f %10.6f %10.2f %10.2f %10.2f %10.2f\n",orb.satno,mjd,ra,de,magnitude(n),n.x,n.y,n.z);
}
fclose(file);
// Match against a catalog
if (usecatalog==1) {
// Open file
file=fopen(catalog,"r");
while (read_twoline(file,0,&orb)==0) {
format_tle(orb,line1,line2);
// Propagate
imode=init_sgdp4(&orb);
imode=satpos_xyz(mjd+2400000.5,&r,&v);
// Compute normal
m=cross(r,v);
// Normal difference
nm.x=n.x-m.x;
nm.y=n.y-m.y;
nm.z=n.z-m.z;
dr=magnitude(nm);
// Position/velocity difference
mr.x=r0.x-r.x;
mr.y=r0.y-r.y;
mr.z=r0.z-r.z;
mv.x=v0.x-v.x;
mv.y=v0.y-v.y;
mv.z=v0.z-v.z;
if (flag==0 || dr<drmin) {
drmin=dr;
dmr=magnitude(mr);
dmv=magnitude(mv);
satnomin=orb.satno;
flag=1;
}
}
printf("%05d %05d %8.2f km %8.2f km %10.6f km/s\n",satno,satnomin,drmin,dmr,dmv);
}
return 0;
}
int main(int argc,char *argv[])
{
int imode,arg,satno=0,useepoch=0,format=0,gmat=0;
FILE *file;
char *env;
char tlefile[LIM],nfd[32];
double mjd;
xyz_t r,v;
orbit_t orb;
double rr[3],vv[3],e[3][3],et[3][3];
// Get environment variable
env=getenv("ST_TLEDIR");
sprintf(tlefile,"%s/classfd.tle",env);
// Set date
nfd_now(nfd);
mjd=nfd2mjd(nfd);
// Decode options
while ((arg=getopt(argc,argv,"c:i:t:m:hejg"))!=-1) {
switch (arg) {
case 't':
strcpy(nfd,optarg);
mjd=nfd2mjd(nfd);
break;
case 'm':
mjd=atof(optarg);
break;
case 'e':
useepoch=1;
break;
case 'j':
format=1;
break;
case 'g':
gmat=1;
break;
case 'c':
strcpy(tlefile,optarg);
break;
case 'i':
satno=atoi(optarg);
break;
case 'h':
usage();
return 0;
break;
default:
usage();
return 0;
}
}
// Open file
file=fopen(tlefile,"r");
while (read_twoline(file,satno,&orb)==0) {
// Propagate
imode=init_sgdp4(&orb);
// Use epoch instead of user supplied date
if (useepoch==1)
mjd=SGDP4_jd0-2400000.5;
// Compute position and velocity
imode=satpos_xyz(mjd+2400000.5,&r,&v);
// Output
if (format==0 && gmat==0)
printf("%05d %14.8lf %f %f %f %f %f %f TEME\n",orb.satno,mjd,r.x,r.y,r.z,v.x,v.y,v.z);
// To vectors
rr[0]=r.x;
rr[1]=r.y;
rr[2]=r.z;
vv[0]=v.x;
vv[1]=v.y;
vv[2]=v.z;
// Matrices
icrs_to_teme(mjd,e);
matrix_transpose(e,et);
// Transform
vector_multiply_in_place(et,rr);
vector_multiply_in_place(et,vv);
// Output J2000
if (format==1 && gmat==0)
printf("%05d %14.8lf %f %f %f %f %f %f J2000\n",orb.satno,mjd,rr[0],rr[1],rr[2],vv[0],vv[1],vv[2]);
// GMAT output
if (gmat==1) {
printf("UTCModJulian = %14.8lf\n",mjd-29999.5);
printf("CoordinateSystem = EarthMJ2000Eq\n");
printf("X = %lf\n",rr[0]);
printf("Y = %lf\n",rr[1]);
printf("Z = %lf\n",rr[2]);
printf("VX = %lf\n",vv[0]);
printf("VY = %lf\n",vv[1]);
printf("VZ = %lf\n",vv[2]);
}
}
fclose(file);
return 0;
}
int main(int argc,char *argv[])
{
int imode,satno=0,arg,desigflag=0;
FILE *file;
orbit_t orb;
xyz_t r,v;
char tlefile[LIM],nfd[32];
char line1[80],line2[80],desig[20];
double mjd,epoch,ep_day,bstar;
char *env;
int ep_year;
// Get environment variable
env=getenv("ST_TLEDIR");
sprintf(tlefile,"%s/classfd.tle",env);
// Set date
nfd_now(nfd);
mjd=nfd2mjd(nfd);
// Decode options
while ((arg=getopt(argc,argv,"c:i:t:m:he:d:"))!=-1) {
switch (arg) {
case 't':
strcpy(nfd,optarg);
mjd=nfd2mjd(nfd);
break;
case 'e':
epoch=(double) atof(optarg);
ep_year=(int) floor(epoch/1000.0);
ep_day=epoch-1000*ep_year;
printf("%d %f\n",ep_year,ep_day);
if (ep_year<50)
ep_year+=2000;
else
ep_year+=1900;
mjd=doy2mjd(ep_year,ep_day);
break;
case 'd':
strcpy(desig,optarg);
desigflag=1;
break;
case 'm':
mjd=(double) atof(optarg);
break;
case 'c':
strcpy(tlefile,optarg);
break;
case 'i':
satno=atoi(optarg);
break;
case 'h':
usage();
return 0;
break;
default:
usage();
return 0;
}
}
// Open file
file=fopen(tlefile,"r");
while (read_twoline(file,satno,&orb)==0) {
format_tle(orb,line1,line2);
// printf("Input:\n%s\n%s\n",line1,line2);
if (desigflag==0)
strcpy(desig,orb.desig);
bstar=orb.bstar;
// Propagate
imode=init_sgdp4(&orb);
imode=satpos_xyz(mjd+2400000.5,&r,&v);
// Convert
orb=rv2el(orb.satno,mjd,r,v);
// Copy back
strcpy(orb.desig,desig);
orb.bstar=bstar;
format_tle(orb,line1,line2);
printf("%s\n%s\n",line1,line2);
}
fclose(file);
return 0;
}
