| 基于Keystone变换的锥扫定位算法 |
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| 引用本文： | 李阳,刘鹤,温靖.基于Keystone变换的锥扫定位算法[J].北京理工大学学报,2008,28(6):549-552. |
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| 作者姓名： | 李阳 刘鹤 温靖 |
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| 作者单位： | 北京理工大学,雷达技术研究所,北京,100081;北京理工大学,雷达技术研究所,北京,100081;北京理工大学,雷达技术研究所,北京,100081 |
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| 摘 要： | 针对距离高分辨圆锥扫描测角体制中,锥扫周期内目标回波距离像跨距离分辨单元走动使得锥扫测角失败的问题,提出一种基于Keystone变换的锥扫定位算法.在径向速度未知或未精确获知的情况下,通过Keystone变换对圆锥扫描周期内获得的多个距离像进行校正,可以正确提取锥扫幅度调制信息,使锥扫测角算法得以应用.计算机仿真结果验证了该方法的有效性.
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| 关 键 词： | 圆锥扫描 Keystone变换 跨距离分辨单元走动 |
| 收稿时间： | 2007/10/11 0:00:00 |
Conical Scan Algorithm Based on Keystone Transform |
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| LI Yang,LIU He and WEN Jing.Conical Scan Algorithm Based on Keystone Transform[J].Journal of Beijing Institute of Technology(Natural Science Edition),2008,28(6):549-552. |
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| Authors: | LI Yang LIU He and WEN Jing |
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| Institution: | Radar Research Laboratory, Beijing Institute of Technology, Beijing 100081, China;Radar Research Laboratory, Beijing Institute of Technology, Beijing 100081, China;Radar Research Laboratory, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | In the wideband conical scan radar,the sensitivity to the radial velocity between the radar and the target induces the range migration through resolution cells among the high range-resolution profiles.It results in the failure of the conical scan angular measurement algorithm.In this paper,Keystone transform is used for range migration compensation without requiring any accurate velocity information.By the transform,the range profiles are realigned and the angular measurements are obtained correctly by the conical scan algorithm,even if a high radial velocity exists.Some computer simulation results are presented which illustrate the effectieness of the method. |
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| Keywords: | conical scan Keystone transform migration through resolution cell |
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