基于均匀线阵的导引头STAP检测研究

Uniform Linear Array Based Radar Seeker Detection with STAP Method

针对导引头下视跟踪目标的典型状态,开展了均匀线阵导引头空时自适应处理(STAP)检测研究。在分析空-时信号环境的基础上,建立目标回波与STAP检测模型,并通过仿真对检测性能进行分析,发现当阵列平行于水平面时,STAP能够获得较好的检测性能,可以获得不超过50m/s的最小可检测速度。如果导引头姿态变化,STAP检测性能将会下降,当阵列俯仰角增大到30°时,将难以检测到目标。

For the radar seeker tracking target at downward-looking state, the uniform linear array radar seeker detection with space time adaptive processing （STAP） method is studied. By analyzing the space-time signal environment, the echo model and the STAP detection model are developed, and the detection performance is analyzed by simulation. The results show that the minimum detection velocity is less than 50 m/s while the array keeping parallel to the horizontal surface, and if the array elevation angle increases to 30°, it is impossible to detect the target.