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《Journal of Systems Engineering and Electronics》 2017年01期
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Dimensions estimation for cone-cylinder target based on sliding-type scatterers analysis

Yuling Liu  Xizhang Wei  Bo Peng  Yongshun Ling  
【摘要】:Scatterers often exhibit aspect or frequency dependence which affects the micro-Doppler shift in scattering response.For cone-cylinder targets, sliding-type scatterers which slide on the edge discontinuity with the change of the incident angle are the most dominant nonideal scattering models. A method is proposed to discriminate among the scatterers on the cone-cylinder target based on the deviation degree of micro-Doppler from sinusoid.By extracting the amplitude and initial phase, the micro-Doppler is estimated as sinusoid. Then the deviation degree is evaluated by the error between the extracted sinusoidal micro-Doppler and the actual micro-Doppler curve. Threshold for the classification is determined with the simulation data. After classification, the micro-Doppler features of sliding-type scatterers are exploited to estimate the target dimensions. The influence of parameters errors and noise on estimation of target dimensions is also illustrated with the simulation data.
【作者单位】School
【关键词】micro-Doppler nonideal scattering sliding-type scatterer dimensions estimation
【基金】:supported by the National Natural Science Foundation of China(61271442)
【分类号】:O186.11
【正文快照】:
1.Introduction Micro-motion of an aerial target,such as precession,vibration,rotation and tumble,will induce the micro-Doppler frequency shift in scattering response[1–3]which can be exploited in radar target detection,imaging,features extraction and r

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