tracking
From Longman Dictionary of Contemporary Englishtrackingtrack‧ing /ˈtrækɪŋ/ noun [uncountable] the system on a video recorder that keeps the picture from a videotape clear on the screenExamples from the Corpustracking• The whole thing is here, complete tracking, guidance, communication and landing controls.• The birds are radio-tagged for tracking.• In the tracking room he took a seat at the desk and listened while Clarac explained the system.