Baseband analysis is performed in order to detect and identify {HEAD ~ reflective signals}, and spectrum analysis is performed in order to detect and identify {TAIL ~ active signal sources} 
Baseband analysis is performed in order to detect and identify { HEAD ~ reflective signals } , and spectrum analysis is performed in order to detect and identify { TAIL ~ active signal sources }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL