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