摘要
天基平台和外辐射源的自身运动使得地杂波分布具有空时二维分布特性,严重影响系统对动目标的检测性能.根据天基平台与辐射源的选取详细分析了地杂波频谱特性,并提出采用偏移相位中心天线(Displaced phase center antenna,DPCA)方法和空时自适应滤波(Space time adaptive processing,STAP)方法实现地杂波抑制.仿真结果表明,两种方法对地杂波的抑制效果相当,双通道天线滤波处理可使地杂波衰减30 dB,而DPCA方法的复杂度远小于STAP方法.
The clutter spectrum has direction-dependent mean frequency in moving airborne platform, which makes the extraction of the echo of interest impossible. The clutter spectrum is analyzed based on the selection of airborne platform and illuminator. Both the displaced phase center antenna technique and the space-time adaptive processing technique are proposed to achieve the clutter suppression. Simulation results show that the two-channel DPCA and STAP processing are comparable, and the computational complexity of the former method is much lower.
出处
《指挥与控制学报》
2015年第3期347-350,共4页
Journal of Command and Control
