| 坦克目标时频特征分析 |
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| 引用本文： | 张彦梅,于敬波. 坦克目标时频特征分析[J]. 北京理工大学学报, 2009, 29(1): 50-53 |
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| 作者姓名： | 张彦梅 于敬波 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 为获得目标信号的更多特征,提高识别概率,引入了短时傅里叶变换的方法对毫米波探测信号进行时频分析;结合坦克目标毫米波信号频谱的特点给出了窗函数的选择方法;分析了坦克装甲车辆与其主要干扰的毫米波信号频谱图的差别,在此基础上给出了毫米波信号在时频域的特征选取方法. 分析结果表明:采用短时傅里叶变换的时频分析方法得到的坦克毫米波信号的频域特征与其主要干扰存在较大差异,据此可以进行坦克目标的识别.
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| 关 键 词： | 毫米波探测 特征提取 目标识别 |
| 收稿时间： | 2008-07-17 |
Analysis of the Signal Characteristics of Tank in Time and Frequency Domain |
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| ZHANG Yan-mei and YU Jing-bo. Analysis of the Signal Characteristics of Tank in Time and Frequency Domain[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2009, 29(1): 50-53 |
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| Authors: | ZHANG Yan-mei and YU Jing-bo |
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| Affiliation: | Department of Electronic Engineering;School of Information Science and Technology;Beijing Institute of Technology;Beijing 100081;China |
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| Abstract: | In order to obtain more characteristics of target signal and improve identification probability,method of short Fourier transform is introduced to analyze the signal in time and frequency domain.The choice method of window function is given combined with the millimeter wave(MMW) signal feature of frequency chart of the target tank.Difference of MMW signal feature of frequency chart between the target and its main interference is analyzed.Based on this,the choosing method of MMW signal feature in time-freque... |
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| Keywords: | millimeter wave detection feature extraction target identification |
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