ABSTRACT
Target range tracking is accomplished by continuously measuring the time delay between the transmission of an radio frequency pulse and the echo signal returned from the target and converting the roundtrip delay into units of distance. Target range tracking requires not only that the time of travel of the pulse to and from the target be measured but also that the target return signal is identified as a target rather than noise and a range-time history of the target be maintained. The chapter considers a case of target pip indication under definition of target range track for a single target. If in the course of next radar antenna scanning period one or several target pips appear within the gate with primary lock-in, the new target range track is started using each target pip. However, there is such a target range autotracking system in which the autotracking algorithm hunts only for target range track.
