So called plane by " the lock is decided " it is actually be locked up to decide by radar, the lock of this radar can be missile surely, also can be battleplan, present empty empty missile wants to hit a target, basically need radar help, because the rate between opportunity for combat is rapid, the distance is far, if be being helped without radar, can discover very hard and lock up calm target, as to empty missile of sky of a few infra-red control and guide, this plays the striking distance of meaning general very close, basically be to be in 10 kilometers lock up calm target inside a few kilometers even, the gift when close quarters fistfight is nice with, exceeding apparent distance remotely to hit need compound control and guide!
And radar wave is signal of a kind of electromagnetic wave, when battleplan is locked up to decide by radar, airborne equipment (ECM) medium radar warning system (RWS) can answer admonitory air man, but, premise is the radar signal that RWS wants to divide separate out to have menace, why? Above all, fly namely airspace electromagnetism environment is complex, next, radar of opportunity for combat times in search and lock the radar wave signal that await is distinguishing, so, with respect to need the branch is in empty affection this to be opposite at ordinary times enemy is relevant the information such as signal of radar wave, communication) undertake analytic handling, reach then the working feature of enemy radar and signal mode, store these information to the RWS of opportunity for combat again, the radar signal lock that is had to browbeat when opportunity for combat is time, with respect to can timely response!
So, empty affection army is to know opportunity for combat is timed have feature of what kind of signal by radar lock, should install this signal feature into RWS to go ahead of schedule only, nevertheless, the signal feature that also is not all radar has, if be those unfamiliar radar signal, so be about to rely on RWS inside buy is algorithmic, whether to have menace through radar signal is being judged after computation, and present radar to cope with opportunity for combat, also be each were enrolled exceptionally, for instance gutty call LPI radar (Low Probability Of Intercept is low intercept and capture probability radar) play meaning, can be in of electronic warfare unit intercept and capture receiver can detect the cause discovers outside radar signal limits.
Say finally, the radar warning system on the plane (RWS) itself is not to have identification friend or foe (IFF) of ability, the minatory sex that it can judge radar signal only according to the preferential logic with good set loses by force, be locked up to decide by the radar wave of missile of active radar control and guide for instance, fire accuses radar signal lock to decide (emissive missile instruction guides fusee date) etc, issue corresponding warning thereby!
