组网雷达弹道目标三维微动特征提取

研究弹道目标中的滑动型散射中心三维微动特征提取问题。分析滑动型散射中心的特点,介绍一种基于半周期时延相乘的散射中心微动特征提取方法,建立滑动型散射中心和理想散射中心微动的数学联系,利用组网雷达的多视角特性,从回波信号中提取参数,通过构造多元非线性方程组,以提取的参数作为变量,求解目标三维微动参数和部分结构特征。仿真实验验证了该方法的有效性。

Extraction of Three-Dimensional Micro-motion Feature from Ballistic Target in Netted Radar

Extraction method of three-dimensional micro-motion feature from sliding-type scattering center in ballistic target is studied. Firstly, the characteristics of sliding-type scattering center are analyzed in the paper, a new feature extraction method based on half period delay multiplication is introduced, and the mathematical relationships between sliding-type scattering center and ideal scattering center are built up. And then parameters are extracted from echo signals by utilizing the multi-view characteristics of netted radar. Through the structure of nonlinear multivariable equation systems, the three-dimensional micro-motion paracters and part of the structure features are solved by taking an extracted parameter as variate. The simulation results show that the proposed algorithm is effective.