Patent ID: 6137436
Filing Date: 2000-10-24
Classification: G01S

Abstract:
A method of initiation a wake-up sensor with a radar detector while preventing self-betrayal for activating a target tracker in response to the sending by said radar detector of the approach of an attacking missile to an armored land vehicle or marine craft, comprising radiating from a transmitter of the radar detector a reduced-energy carrier so as to be nondirectedly propagated in continuous-wave operation into surrounding space into mutually adjacent spatial sectors over a large frequency spectrum and effecting modulation thereof with sectorially different radiated pseudo-noise encoding, having a receiver of the radar detector convert transmission energy incorporating receiving energy which is reflected at the missile into a reduced frequency range, synchronizing said receiver with the transmitter, and implementing a cross-correlation with the transmission energy through the sectorially different pseudo-noise encoding which is predetermined at the transmitter so as to supply a wake-up signal to the tracker.