海杂波中的超视距雷达探测性能分析

海上大气波导在使微波雷达实现超视距探测的同时,也使海杂波回波信号增强,从而降低雷达的检测分辨性能。利用雷达性能评估模式,仿真计算了雷达在不同发射频率、发射仰角以及天线高度下,典型波导环境中海杂波和目标的回波功率,进行了海杂波干扰下微波超视距雷达的探测性能分析与评估。分析结果表明,在实际工作中选择合适的雷达系统参数,可以有效的降低海杂波的干扰,同时又不容易遗漏较远距离处的目标。

Analysis of OTH Radar Detection Ability in Sea Clutter

The atmospheric duct over sea could realize over-the-horizon detection of the microwave radar,and also due to intensifying the echo signal of sea clutter,reduce radar detection ability.The echo powers of sea clutter and target in the typical duct conditions and with radar in different frequencies,elevation angles,and antenna heights are simulated and computed by using radar ability evaluation mode.The analysis results show that through proper choice of radar system parameters,the disturbance of sea clutter could be effectively reduced,and no far-distance target easily missed.