| 近程PRC-CW雷达运动目标特征研究 |
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| 引用本文： | 赵兆,王志华,是湘全. 近程PRC-CW雷达运动目标特征研究[J]. 南京理工大学学报(自然科学版), 2008, 32(6) |
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| 作者姓名： | 赵兆 王志华 是湘全 |
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| 作者单位： | 南京理工大学,电子工程与光电技术学院,江苏,南京,210094;南京理工大学,电子工程与光电技术学院,江苏,南京,210094;南京理工大学,电子工程与光电技术学院,江苏,南京,210094 |
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| 摘 要： | 为获得运动目标特征,基于目标多点散射模型推导了近程伪码调相连续波(PRC-CW)雷达回波多分量信号模型.在该模型基础上提出将运动目标的细微频谱结构作为该目标特征,并详细阐述了特征提取的方法.该方法在常用的脉压-快速傅里叶变换处理之后,利用频谱细化方法得到目标的细微频谱结构,然后通过梅林变换实现了该结构特征对于目标不同入射角情况下的尺度不变性.给出了实现过程框图.目标外场实测数据试验结果表明不同目标的细微频谱结构明显不同,反映了不同目标的结构特征.
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| 关 键 词： | 伪随机码 脉冲压缩 特征提取 梅林变换 |
Feature Extraction of Moving Target for Short-range PRC-CW Radar |
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| ZHAO Zhao,WANG Zhi-hua,SHI Xiang-quan. Feature Extraction of Moving Target for Short-range PRC-CW Radar[J]. Journal of Nanjing University of Science and Technology(Nature Science), 2008, 32(6) |
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| Authors: | ZHAO Zhao WANG Zhi-hua SHI Xiang-quan |
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| Affiliation: | School of Electronic Engineering and Optoelectronic Technology;NUST;Nanjing 210094;China |
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| Abstract: | A multi-component echo signal model of short-range pseudo random code continuous wave(PRC-CW) radar is presented based on target's multi-points scattering model.An idea to take the moving target's fine frequency structure as its feature is proposed based on the model presented above.The feature extraction method is illustrated,in which the fine frequency structure around the target's main Doppler component is obtained by frequency zoom approach on the echo after conventional pulse compression-fast Fourier t... |
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| Keywords: | pseudo random code pulse compression feature extraction Mellin transform |
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