摘要
针对超宽带脉冲信号的时域特点,提出一种基于滑窗方差的动目标时延估计方法,在对回波信号进行预处理的基础上,通过滑窗提取信号的方差值信息,对所提的方差做二重阈值筛选和二值化处理,最后经过校正得到估计时延。最后通过实测数据验证该方法的有效性,为超宽带雷达动目标时延估计提供了一个新方法。
According to the time domain characteristics of UWB pulse signal, a method of moving target time delay estimation is proposed based on sliding window variance. On the basis of preprocessing echo signal, the information of variance value is extracted by sliding window, and the proposed variance is screened by double threshold after binarization, a more accurate time delay estimation is obtained after correction. Finally, the effectiveness of this method is verified by the measured data, which provides a new method for UWB radar moving target time delay estimation.
作者
李奉民
杨德贵
沈明旭
田达
LI Fengmin;YANG Degui;SHENG Mingxu;TIAN Da(School of Aeronautics and Astronautics,Central South University,Changsha 410083,China;No.8511 Research Institute of CASIC,Nanjing 210007,China)
出处
《现代雷达》
CSCD
北大核心
2022年第10期48-53,共6页
Modern Radar
基金
国家重点研发计划项目(2018YFC0810202)。
关键词
超宽带
冲激雷达
动目标
时延估计
ultra wide-band radar
impulse radar
moving target
time delay estimation
