SEMIACTIVE HOMING DEVICE Russian patent published in 2018 - IPC F42B15/01 

FIELD: weapon and ammunition.

SUBSTANCE: homing device comprises a series-connected multi-channel receiver, an adder, a threshold device, the first pulse selector and a signal processing unit whose output is the output of the semiactive homing device, and the first gate driver with output connected to the second input of the first pulse selector. In addition, the second pulse selector with the first input connected to the threshold device output is connected in series with the first delay line and the second gate driver whose second input is the input of external pulses, and the output is connected to the combined second inputs of the first and second pulse selectors. The second and third delay lines are introduced, the output of the third delay line being connected to the second input of the first gate driver, the first input of the second delay line being connected to the output of the second pulse selector and the output - to its second input and the combined first input of the first gate driver and the third delay line input.

EFFECT: increased noise immunity due to pulse gate formation ahead of the time of reflected pulse arrival and duration taking into account the instability of the backlight pulses repetition frequency.

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