Parameter Estimation of the Precessing Cone-Shaped Warhead Based on the Micro-Doppler with Multi-aspect Observations

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Zou, Xiaohai^1,2 ; Gao, Lei^2 ; Chen, Qi^1 ; Yu, Jing^1

Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai

264001, China^1

CEMEE State Key Laboratory, Luoyang

471003, China^2

关键词: Geometry parameter;    Micro-Doppler;    Middle section;    Multi aspects;    Precession frequency;    Scattering centers;    Simulation analysis;    Sliding scattering centers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012027/pdf
DOI  :  10.1088/1757-899X/274/1/012027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Micro-motion feature is one of the effective features used for radar target recognition in the middle section of the ballistic curve. The micro-Doppler expressions of the scattering center at the conical point and two sliding scattering centers in the conical bottom are given, firstly. Then by analyzing the micro-Doppler expressions, it is found that only the precession frequency can be estimated from the micro-Doppler expressions, and other parameters can't be estimated directly. But all precession and geometry parameters can be estimated by decreasing the number of parameters in the micro-Doppler expressions of two sliding scattering centers, which must use two groups of echoes illuminating the same warhead target from the cone top and the cone bottom. Finally, a new method of estimating all precession and geometry parameters is proposed, and it is validated by the simulation analysis.