基于X波段无人机暗室测量数据的雷达探测性能分析

Analysis of radar detection performance based on X-band UAV anechoic chamber measured data

雷达对无人机的探测性能分析可为低空监视雷达设计、对无人机探测与反制提供重要参考。基于X波段固定翼无人机的全极化暗室实测数据,采用零记忆非线性变换(ZMNL)法生成相关Weibull杂波,分析了平方律检测器对无人机的检测概率,并根据仿真获得的检测所需最小信杂比,借助地杂波背景下的雷达距离方程计算了全极化雷达对低空无人机的探测距离。结果表明:考虑到无人机起伏损失和地杂波强度在不同极化方式之间的差异,VV极化的探测距离最远,交叉极化次之,而HH极化的综合表现相对较差。

The analysis of radar detection performance on unmanned aerial vehicles(UAVs)can provide important references for the design of low-altitude surveillance radars and the response and countermeasures of UAV.This paper analyzes the detection probability of the square-law detector for UAVs,based on the fully polarimetric radar experimental data of a fixed-wing UAV in X-band in an anechoic chamber and adopting the Zero Memory Non-linearity(ZMNL)method to generate correlated Weibull clutter.And according to the minimum required signal-to-clutter ratio(SCR)for detection obtained by simulation,the detection range of low-altitude UAVs with fully polarimetric radar is calculated by using the radar rage equation under the background of ground clutter.The results show that,considering the difference of fluctuation loss of UAV and ground clutter intensity among different polarization modes,the detection range of VV polarization mode is the longest,followed by cross-polarization modes,while HH polarization mode shows relatively poor comprehensive performance.