摘要
基于先前的等效散射点模型,提出一种基于三次样条插值算法实现锥体目标进动时的微多普勒提取方法。该方法首先计算雷达回波信号的时频分布,然后找出时频图中的较大值点,最后由这些较大值点运用三次样条插值算法进行拟合,得到强散射点微多普勒频率随时间的变化曲线。基于电磁仿真数据的实验验证了所提方法的有效性。
Based on the previous equivalent scatter point model, an approach to extract micro- Doppler frequency of the cone target with precession based on the cubic spline interpolation algo- rithm is proposed. In this method, the time-frequency distribution of radar target echo signal is firstly calculated ,then the larger value points of the time-frequency figure are found, finally these larger value points are fitted by the cubic spline interpolation algorithm,the micro-Doppler frequen- cy variety curve of strong scatter points with time is obtained. The experiments based on electro- magnetic simulation data validate the validity of the proposed method.
作者
曹文杰
赵新燕
CAO Wen-jie ZHAO Xin-yan(The 723 Institute of CSIC, Yangzhou 225001 ,China)
出处
《舰船电子对抗》
2017年第4期55-58,共4页
Shipboard Electronic Countermeasure
关键词
进动
微多普勒频率
三次样条插值
precession
micro-Doppler
requency
cubic spline interpolation
