METHOD OF RADAR PROTECTION AGAINST ANTIRADAR MISSILE BASED ON USE OF ADDITIONAL RADIATION SOURCE WITH A LIFT-TYPE HORN AERIAL

摘要

FIELD: passive methods of radar protection against antiradar missiles equipped with passive radar homing heads. ^ SUBSTANCE: the method consists in leading away of the antiradar missile to the point of false radiation being at a distance of more than 100 m from the radar with a subsequent blasting of the antiradar missile in the aft hemisphere from the radar. The effect of radar protection with the aid of an additional radiation source with a horn aerial consists in the fact that the horn aerial of the additional radiation source together with the aerial of the protected radar for radar homing head represents a multiple concentrated target. By the received signal to the homing head the direction to the effective center of radiation of the multiple concentrated target is determined, the mean position of which is usually within the target. On condition that radiation of the radar and the horn aerial of the additional radiation source is coherent and antiphase the effective center of radiation of a double-point target will come out of the geometry of the multiple target and be within two and more base distances between the radar and the horn aerial of the additional radiation source depending on the power relation of the radiated signals of the radar and the horn aerial of the additional radiation source. In case of an insolubility of the elements of the multiple concentrated target in the homing head the antiradar missile is aimed at the effective center of the target, which at a respective selection of distances between the radar and the additional radiation source, powers of the radiation sources and phase relations between them, the minimum probability of affection of each radiating source included in the composition of the multiple target should be provided. ^ EFFECT: enhanced reliability of radar protection, reduced cost of adopted designs. ^ 3 dwg