A comparison between those surveillance systems which use video only and those which use modulated carrier techniques. The paper describes how the multiple carrier method is more suitable for large systems where many cameras are situated in a particular direction. As an illustration, the motorway surveillance system at 'Spaghetti Junction' near Birmingham, is described.
A motorway surveillance system (CCTV)
Ein Verkehrsueberwachungs-System
Cable Television Engineering ; 10 , 6 ; 234-238
1975
Aufsatz (Zeitschrift)
Englisch
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