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该文针对弹道目标回波微多普勒过大或过小时平动补偿和微多普勒提取问题,提出了一种时域处理方法.该方法通过多级延迟共轭相乘处理实现平动补偿,通过调整延迟时间实现微多普勒缩放,并根据信号能量差异使用Hough变换进行各信号分量的逐次分离和微多普勒的逐次提取.理论分析和仿真实验均表明:本文方法可以有效进行多分量弹道目标复合运动回波信号平动补偿和微多普勒提取,显著提高雷达探测微动结构的能力.
Aiming at the problems of translational compensation and micro-Doppler extraction when the target echo is too large or too small, a time-domain processing method is proposed in this paper. This method achieves translation by multi-stage delay conjugate multiplication Compensating, micro-Doppler scaling is achieved by adjusting the delay time, and successive separations of signal components and successive extraction of micro-Doppler signals are performed by using Hough transform according to signal energy difference.Theoretical analysis and simulation experiments show that this method can be effectively performed The multi-component trajectory target composite motion echo signal translation compensation and micro-Doppler extraction, significantly improve the ability of radar to detect fretting structure.