| 基于Keystone变换的宽带脉冲多普勒雷达目标运动补偿算法 |
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| 引用本文： | 刘海波,卢俊道.基于Keystone变换的宽带脉冲多普勒雷达目标运动补偿算法[J].北京理工大学学报,2012,32(6):625-630. |
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| 作者姓名： | 刘海波 卢俊道 |
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| 作者单位： | 北京理工大学信息与电子学院 北京100081;北京理工大学信息与电子学院 北京100081;中国人民解放军63889部队 河南 洛阳454750 |
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| 基金项目： | 国家重点基础研究发展计划项目(613107) |
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| 摘 要： | 针对由运动目标在步进频间不同频点引入的多普勒频率跨速度分辨单元走动问题,提出了基于Keystone变换的补偿方法,即通过时域的伸缩变换来补偿多普勒频率走动问题,并研究了基于多通道Keystone变换和基于装订信息的两种解速度模糊方法.仿真结果表明,该方法可以有效提高速度分辨率和信噪比,解决目标运动带来的峰值降低、波形发散等问题.
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| 关 键 词： | 频率步进 宽带脉冲多普勒 运动补偿 Keystone变换 |
| 收稿时间： | 2011/6/10 0:00:00 |
Target Motion Compensation Algorithm Based on Keystone Transform for Wideband Pulse Doppler Radar |
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| LIU Hai-bo and LU Jun-dao.Target Motion Compensation Algorithm Based on Keystone Transform for Wideband Pulse Doppler Radar[J].Journal of Beijing Institute of Technology(Natural Science Edition),2012,32(6):625-630. |
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| Authors: | LIU Hai-bo and LU Jun-dao |
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| Institution: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | In this paper, a motion compensation method based on Keystone transform is introduced to deal with the issue of multi-frame stepped Doppler frequency signal shift caused by mobile target. The stretching-drawing transform in time domain was employed to compensate the Doppler frequency shift. Moreover, two methods of parsing velocity ambiguity were studied: one is based on multi-channel Keystone transform and the other is based on binding information. Theoretical analysis and simulation results demonstrate that the compensation method could improve the velocity resolution and signal-to-noise efficiently. Also, the issues from target motion could be solved such as peak decrease, waveform divergence, etc. |
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| Keywords: | stepped frequency wideband PD motion compensation Keystone transform |
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