载机横滚对三面阵雷达目标检测性能影响分析

摘要

针对刚体模型条件下，载有三面阵天线的机载预警雷达载机的姿态变化问题，建立了横滚的数学模型，分析了载机横滚对杂波谱和目标回波幅度的影响，在采用单通道信号处理条件下，通过仿真实验给出了不同阵面的横滚对目标的检测概率影响，明确了载机横滚的限度。结果表明：横滚对斜侧面阵的目标检测概率影响明显，而对前向阵影响不明显。%Considering aircraft rolling of airborne early warning radar with three-side antenna array based on rigid body model,the mathematic model of aircraft rolling is set up,and then the effects of rolling on clutter power spectrum and target echo amplitude is analyzed. Finally,on the condition of single-channel signal processing,the target detection probability of different types of array is gained on the influence of rolling,and the rolling angle confine is given. Simulation results show that rolling of aircraft has obvious influence on target detection probability of inclined side looking antenna array,but little influence on that of forward looking antenna array.