Capture protection for pulse signal tracking system

摘要

This invention relates to a method of separating pulses of a particular signal source from the total signal environment. A tracking gate technique is used in which guard bands are provided on ether side of the tracking gate. The guard bands detect interfering pulses before they coincide with the pulses being tracked. Upon detection of an interfering pulse the tracking system is switched from a leading edge tracking mode to a lagging edge tracking mode or vice-versa to prevent tracking gate "capture".