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