| 摘要 |
FIELD: weapons and ammunition.SUBSTANCE: invention relates to ammunition, namely to methods of generating a Doppler fuse actuating command under the effect of passive interference. Method provides for radiation of sounding radio pulses, reception and amplification of reflected radio pulses, extraction of the Doppler frequency signal corresponding to the target velocity, the fuse detonation at the Doppler signal exceeding the threshold value. Reflected radio pulses are received and amplified in the gate, delayed relative to the gate of sounding radio pulses for the time corresponding to actuating guidance of the fuse from the target, Doppler signal is extracted in the bandwidth of frequencies corresponding to the range of possible velocities of the target. Set is adaptation time T, during which changed is the lower frequency bandwidth of the Doppler signal depending on the deviation of its level from the threshold value, while maintaining its maximum level, but less than the threshold value. When adaptation time T is over the lower frequency of the Doppler signal bandwidth is fixed. Current Doppler signal level is compared with the threshold value, which, when exceeded, is followed by activation of the fuse detonation.EFFECT: invention increases protection from passive interference and reduces the probability of false responses when forming the command for the Doppler fuse actuation.1 cl, 2 dwg |
