High Precision Range Imaging of Pulse Stepped Frequency Radar Based on Target' s Feature
Received date: 2004-01-15
Online published: 2005-01-15
根据雷达目标的宽度特征，提出了目标检测窗口内雷达信号的逆Chirp z变换局部成像处理方法。利用有限的输入数据长度，有效提高目标局部距离像的采样分辨率，获得更精确的距离像。与传统的数据长度补零逆傅里叶变换方法相比，在相同的采样分辨率条件下，该方法能有效减小计算量。仿真实验结果与理论分析相符合，证明了该方法的有效性。
关键词： 脉间频率步进雷达; 脉冲压缩; 逆傅里叶变换; 逆Chirp-z变换
王一丁 , 凃国防 . 基于目标宽度特征的脉间跳频雷达距离精确成像[J]. 中国科学院大学学报, 2005 , 22(1) : 46 -50 . DOI: 10.7523/j.issn.2095-6134.2005.1.007
According to radar target' s width feature , an inverse Chirp-z transformation method was put forward for the target' s detection window .It aimed to obtain high precision range image via increasing sampling resolution . Compared with traditional inverse Fourier transform method , which used zeros padding method , at the same condition of sampling resolution , the method proposed could decrease the calculation load .Simulation corresponded with theoretical analysis , and the results proved it was effective.
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