For maximum detection capability, each of a plurality of tag emission receivers is equipped with {HEAD ~ a circularly polarized, omnidirectional antenna}, to provide {TAIL ~ hemispherical coverage} 
to provide
For maximum detection capability , each of a plurality of tag emission receivers is equipped with { HEAD ~ a circularly polarized , omnidirectional antenna } , to provide { TAIL ~ hemispherical coverage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL