电磁波遮挡对舰艇雷达对抗侦察影响分析

Analysis on Influence of Electromagnetic Wave Blocking of Ship-borne Radar Countermeasure Reconnaissance System

舰载雷达对抗装备天线受舰艇上层建筑物遮挡造成的侦察能力下降问题,长期以来停留于定性分析层面,难以做出符合实际的准确判断。采用基于单刃峰绕射模型的仿真计算方法,对遮挡效应进行分析研究并对实际尺寸舰艇的遮挡效应进行估算,可为外场和海上试验提供先验信息。对雷达对抗侦察装备在遮挡区灵敏度变化情况设计并开展了静态测量和海上动态验证试验相结合的一系列专题研究。通过仿真数据与实际测量试验的数据比对,证明了利用单刃峰绕射模型对遮挡效应分析和估算的可行性,分析了舰艇上层建筑物的遮挡效应对舰载雷达对抗侦察装备使用效果的影响。

Analysis on performance degradation of the ship-borne radar countermeasure reconnaissance equipment due to antenna blocking by the superstructure of the ship remains in qualitative aspect,it is impossible to make an accurate assessment conforming with actual conditions.By means of simulation computation based on single knife-edge diffraction,the paper conducts analysis on the blocking effect and estimates blocking effect of the full-scale ship which may be used to provide priori information for field and sea test.The paper designs and conducts series of research activities combining static measurement with dynamic sea test aiming at the change of sensitivity of radar reconnaissance equipment in blocking area.Through comparing measured data with simulation data,the paper proves the feasibility of analysis and estimation of blocking effect with single knife-edge diffraction model and probes into the influence of the blocking effect of the superstructure of the ship on performance of ship-borne radar reconnaissance equipment.