机载预警雷达姿态变化对探测性能会产生不利影响. 针对刚体模型条件下机载预警雷达载机的姿态变化问题, 建立了载机偏航和横滚模型, 分析了两种姿态改变对杂波谱和目标回波功率的影响, 在采用单通道信号处理的基础上, 通过仿真实验给出了两种姿态共同影响下的目标检测概率. 结果表明: 偏航和横滚都使检测概率下降, 横滚对目标检测概率的影响比偏航更为明显, 当姿态变化角超过一定值时, 雷达失去目标检测能力.

Attitude vibration of airborne early warning radar has an adverse impact on target detection performance. Considering the attitude vibration of aircraft for installing airborne early warning radar under rigid body model condition, the aircraft crabbing and rolling models are set up, and then the effects of these two kinds of attitude vibration on clutter spectrum and target echo power is analyzed. Finally, based on single-channel signal processing, the target detection probability under the influence of both crabbing and rolling is obtained by simulation. The results show that: 1)Both crabbing and rolling reduce the detection probability, and the rolling having a more significant influence than crabbing;and 2)When the vibration angle of attitude exceeds a certain value, the radar will lose the capability of target detection.