基于多谐波微多普勒信号分析的目标摄动参数提取方法

Target Parameters Extracted from Multi-harmonic Micro-Doppler Signal Analysis

针对具有微多普勒特征的摄动目标回波信号,该文提出了目标摄动频率、振幅参数的估计方法。基于摄动目标的多谐波微多普勒回波信号模型,推导出了谐波频域峰值比与目标振幅比、最大多普勒频偏与目标振幅的定量关系,实现了由摄动目标回波信号估计摄动参数。该方法适用于具有多谐波微多普勒特征的目标探测。仿真结果表明了该方法的有效性。

Based on the echoes with micro-Doppler signatures, a method is proposed to estimate target frequencies and amplitudes. Model echoes as multi-harmonic micro-Doppler one in order to obtain the connection between target amplitude ratio and frequency domain peak ratio and the relationship between maximum Doppler frequency and target amplitudes. Thus, the method estimating target vibrational parameters is deduced. The method is applicable to the target detections as long as the echoes has multi-harmonic micro-Doppler signatures. The theoretical validity is illustrated with simulation results.