// position is geodetic, need geocentric for advanceRadM
SGGeod myGeodPos = SGGeod::fromDegM( probe_lon_deg[0], probe_lat_deg[0], 20000.0 );
SGGeoc myGeocPos = SGGeoc::fromGeod( myGeodPos );
// position is geodetic, need geocentric for advanceRadM
SGGeod myGeodPos = SGGeod::fromDegM( probe_lon_deg[0], probe_lat_deg[0], 20000.0 );
SGGeoc myGeocPos = SGGeoc::fromGeod( myGeodPos );
// compute the remaining probes
for (unsigned i = 1; i < sizeof(probe_elev_m)/sizeof(probe_elev_m[0]); i++) {
// compute the remaining probes
for (unsigned i = 1; i < sizeof(probe_elev_m)/sizeof(probe_elev_m[0]); i++) {