摘要
本文首先建立了锥体目标微动模型,分析了其微多普勒特征,从理论上预测了多普勒谱宽与微动参数和目标几何参数的线性关系,然后由目标雷达回波模型,利用数值解的方法验证了多普勒谱宽与微动参数的线性关系,由此提出了一种新的锥体目标雷达特征提取和参数估计的方法。最后使用软件对目标进行电磁散射建模,并利用静态建模数据完成准动态的建模,使用仿真数据估计微动和目标几何参数,最后通过仿真结果证明本文提出的方法的效果。
A typical micro-motion model is set up for cone-shaped target,and its micro-Doppler feature is analyzed. The approximate linear law is found for width of Doppler spectrum and precession parameters. With a theoretic echo model, the linear law is validated by numeric emulation. Then a new method is proposed for radar feature extraction from cone-shaped target and micro-motion parameters estimation. The electromagnetic scatter model of the target is set up by a soft and its simulation data is used to estimate micro-motion parameters and geometrical parameters. Simulation results validate the new method proposed by author.
出处
《信号处理》
CSCD
北大核心
2009年第7期1120-1124,共5页
Journal of Signal Processing
基金
空间目标进动特性分析及其在雷达目标识别中的应用60402032
关键词
雷达特征提取
微动
微多普勒
进动
参数估计
radar feature extraction
micro-motion
micro-Doppler
precession
parameter estimation