| 步进频率信号相位对消合成运动目标距离像 |
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| 引用本文： | 陈行勇,刘永祥,黎湘,郭桂蓉.步进频率信号相位对消合成运动目标距离像[J].电子与信息学报,2007,29(4):815-818. |
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| 作者姓名： | 陈行勇 刘永祥 黎湘 郭桂蓉 |
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| 作者单位： | 国防科技大学空间电子信息技术研究所,长沙,410073;国防科技大学空间电子信息技术研究所,长沙,410073;国防科技大学空间电子信息技术研究所,长沙,410073;国防科技大学空间电子信息技术研究所,长沙,410073 |
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| 摘 要： | 研究了步进频率信号运动目标成像新方法。首先推导了步进频率信号合成扩展目标距离像原理；基于离散傅里叶变换理论，分析了运动导致的步进频率信号合成距离像失真，提出了相位因子对消合成运动目标距离像方法。新方法不需要估计运动速度。仿真结果证明了该算法效果。
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| 关 键 词： | 频率步进信号 离散傅里叶变换 距离像 多普勒效应 |
| 文章编号： | 1009-5896（2007）04-0815-04 |
| 收稿时间： | 2005-09-09 |
| 修稿时间： | 2006-03-20 |
Phase Cancellation for Synthesizing Range Profiles of a Moving Target via Stepped Frequency Signal |
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| Chen Hang-yong,Liu Yong-xiang,Li Xiang,Guo Gui-rong.Phase Cancellation for Synthesizing Range Profiles of a Moving Target via Stepped Frequency Signal[J].Journal of Electronics & Information Technology,2007,29(4):815-818. |
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| Authors: | Chen Hang-yong Liu Yong-xiang Li Xiang Guo Gui-rong |
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| Affiliation: | Research Institute of Space Electronics, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | In this paper, a new method is explored for synthesizing range profile of a moving target via stepped frequency signal. The principle of synthesizing range profile of an extended target is investigated for stepped frequency signal. The distortion of synthetic range profiles is discussed with the theory of Discrete Fourier Transform (DFT). Based on phase cancellation, a new technology is proposed to achieve range profile with out distortion for a moving target. The new technology does not need the estimation of the velocity. The result of emulation proves the effect of the method. |
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| Keywords: | Stepped frequency signal Discrete Fourier Transform(DFT) Range profile Doppler effect |
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