摘要
现代战场电磁环境复杂,往往会出现多个信号同时到达接收机的情况。针对这一问题,提出了一种基于数字信道化结构的雷达脉冲信号分离方法。该方法首先对滑动离散傅里叶变换进行了分析,并基于此完成对同时到达信号的信道划分,随后确定信道能量峰值点集合,并结合Kalman滤波器和常速度模型,采用多目标跟踪的思想对不同信号的信道峰值点位置随时间的变化进行跟踪,在此基础上通过时频域反变换完成时域交叠信号分离。仿真实验验证了文章所提算法的有效性。
The complex electromagnetic environment of modern war-field often makes receivers receive multiple signalsat the same time. A radar pulse separation method based on digital channelizing was proposed to solve the problem. Firstlythe sliding DFT was analyzed, while the simultaneously received signals are channelized, after that, the peak locations ofdifferent channels were tracked using the Kalman filter and CV model. Finally different signals were separated by reversetransformation in time-frequency domain. The validness of the proposed method was proved by experiment.
出处
《空间电子技术》
2017年第3期32-37,共6页
Space Electronic Technology
