AFG/dump1090
3
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

When sanity-checking relative CPR results, use the correct relative

Browse source 
location (which may not be the aircraft location).

I suspect this sanity check is, in fact, redundant now that the
rest of the algorithm has had some bugs fixed; it should only
produce results within half a cell by definition.
This commit is contained in:
Oliver Jowett 2015-01-12 16:29:24 +00:00
parent 583984af8a
commit 8d0d16c30a
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
mode_s.c
View file

@ -2630,7 +2630,7 @@ int decodeCPRrelative(struct aircraft *a, int fflag, int surface) {
} }
// Check to see that answer is reasonable - ie no more than 1/2 cell away // Check to see that answer is reasonable - ie no more than 1/2 cell away
if (fabs(rlat - a->lat) > (AirDlat/2)) { if (fabs(rlat - latr) > (AirDlat/2)) {
a->bFlags &= ~MODES_ACFLAGS_LATLON_REL_OK; // This will cause a quick exit next time if no global has been done a->bFlags &= ~MODES_ACFLAGS_LATLON_REL_OK; // This will cause a quick exit next time if no global has been done
return (-1); // Time to give up - Latitude error return (-1); // Time to give up - Latitude error
} }
@ -2643,7 +2643,7 @@ int decodeCPRrelative(struct aircraft *a, int fflag, int surface) {
if (rlon > 180) rlon -= 360; if (rlon > 180) rlon -= 360;
// Check to see that answer is reasonable - ie no more than 1/2 cell away // Check to see that answer is reasonable - ie no more than 1/2 cell away
if (fabs(rlon - a->lon) > (AirDlon/2)) { if (fabs(rlon - lonr) > (AirDlon/2)) {
a->bFlags &= ~MODES_ACFLAGS_LATLON_REL_OK; // This will cause a quick exit next time if no global has been done a->bFlags &= ~MODES_ACFLAGS_LATLON_REL_OK; // This will cause a quick exit next time if no global has been done
return (-1); // Time to give up - Longitude error return (-1); // Time to give up - Longitude error
} }