阿拉伯海典型大气波导对舰载雷达探测影响研究

Research on the Influence of Typical Atmospheric Waveguides in the Arabian Sea on Shipborne Radar Detection

针对某年3月某日阿拉伯海出现的大气波导导致的雷达超视距探测的现象,利用该航次探空火箭测量的大气温度、湿度廓线计算大气波导,通过仿真的手段分析了表面波导和抬升波导对雷达探测的影响,并通过改变波导特征量分析对海搜索雷达对中型舰艇的探测效果。结果表明:抬升波导和表面波导对雷达探测舰艇有显著的影响,在改变波导的高度和强度后,雷达探测效果发生明显变化。当波导强度或高度达某些阈值后可使雷达产生超视距探测能力。

In response to the phenomenon of radar over-the-horizon detection caused by atmospheric ducts appearing in the Arabian Sea on March of a certain year,the article uses the atmospheric temperature and humidity profiles measured by the sounding rocket of the voyage to calculate the atmospheric duct.Through simulation,the influence of surface and elevated ducts on radar de⁃tection is analyzed,and the detection effect of sea search radar on medium-sized ships is analyzed by changing the characteristics of the duct.The results show that the elevated waveguide and surface waveguide have a significant impact on radar detection of ships,and the radar detection effect changes significantly after changing the height and strength of the waveguide.When the strength or height of the waveguide reaches certain thresholds,the radar can generate over-the-horizon detection capability.