摆动锥体目标微多普勒分析和提取

 本文研究锥体目标的摆动特性及其微多普勒特征.在引入微多普勒相关概念和信号模型的基础上,建立了锥体目标的摆动模型,并对其微多普勒分别用代数法和矩阵法进行了理论推导.通过仿真,采用时频分析方法从雷达回波中成功提取出摆动的微多普勒特征,且与计算结果完全一致,从而验证了摆动模型及其微多普勒理论推导的正确性.同时,研究了速度和加速度对微多普勒的影响以及微多普勒对雷达照射时间和重返时间的要求,所得结论对微多普勒的提取具有一定的参考价值.

Analysis and Extraction of Micro-Doppler Induced by Cone-Shaped Target's Wobbling

The wobble performance of cone-shaped target with its micro-Doppler signature is researched in this paper.After the interrelated concepts and signal model of micro-Doppler are introduced,the wobble model of cone-shaped target is built,and the theoretical formula of its micro-Doppler is derived separately with the algebra and matrix methods.By the simulation,the micro-Doppler modulation induced by wobble is extracted successfully from the radar echo with time-frequency analysis method,which agrees well with the computing result,and suggests that the wobble model of cone-shaped target and the mathematical derivation of its micro-Doppler theoretical formula are valid.Besides,the influence of velocity and acceleration on micro-Doppler is researched as well as the request of micro-Doppler on the radar return time and illuminating time,and the research results are valuable for the extraction of micro-Doppler.