Patent ID: 6138572
Filing Date: 2000-10-31
Classification: F42C

Abstract:
A passive guided missile fuze, capable of detecting the presence of a target, having an axis which coincides substantially with the direction of forward motion of the missile, the fuze including three detectors for detecting sequentially in time three separate beams of electromagnetic radiation from the target, the beams forming angles with the axis, the two detectors which first detect the presence of a target being the forward detectors, the missile fuze detecting the presence of a target when the two forward detectors simultaneously detect two beams of radiation from the target, the fuze comprising:circuitry for a first channel, connected to the output of that detector which first detects the presence of the target;circuitry for an auxiliary channel, connected to the output of that detector which next in time detects the presence of the target;the two circuitries serving to determine the presence of the target when there is simultaneous detection of the target by both detectors; andcircuitry for a second channel, connected to the output of the third detector, for activating the fuze after the detectors of the first two named circuitries have simultaneously detected detected the presence of the target.