舰载雷达在蒸发波导环境下探测掠海导弹的仿真分析

Simulation Analysis of the Influence of Evaporation Duct on Detecting Antiship Missile with Shipborne

蒸发波导对舰载对海雷达的探测距离具有显著的影响,掠海反舰导弹的飞行高度一般低于或略高于蒸发波导高度,即水面舰艇在探测掠海反舰导弹时,绝大多数情况会受到蒸发波导影响,因此,在此利用抛物型方程及分步傅里叶算法对电磁波在蒸发波导条件下的传播情况进行数值模拟,利用雷达探测评估模式计算出在不同大气环境中,不同频段雷达对不同反射截面积和不同飞行高度导弹的最大探测距离,通过仿真分析得出了在蒸发波导环境中,绝大多数情况下,S波段雷达对掠海反舰导弹的探测能力要优于X波段雷达。

The detection range of radar is prominently influenced by evaporation duct. Because the flight .altitude of antiship missile is lower or a little higher than the height of evaporation duct, in many cases evaporation duct impacts on detection range at detecting antiship missile with surface ship. For this reason, the electromagnetic wave propagation was simulated numerically by parabolic equation and step-Fourier algorithm under the condition of evaporation duct, and the maximum detection range was calculated by assessment mode of radar detection at different atmospheric environments and frequency bands of radar, and different reflected target cross sections and flight altitudes of missile. The simula- tion results show that the performance of S band radar is better than X band＇ s on most conditions in the presence of evaporation ducts.