| Keystone变换实现方法研究 |
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| 引用本文： | 王娟,赵永波.Keystone变换实现方法研究[J].火控雷达技术,2011,40(1):45-51. |
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| 作者姓名： | 王娟 赵永波 |
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| 作者单位： | 西安电子科技大学,西安,710071 |
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| 摘 要： | 在传统PD雷达里,当相干积累时间较长或信号带宽很大、目标运动速度很高时,回波会出现越距离单元走动,从而影响雷达探测目标的性能.Keystone变换是校正脉冲回波距离走动的常用方法.本文详细研究了Keystone变换的三种常用实现方法,对它们的运算量作了比较,指出Chirp-Z变换能较好地满足系统实时性的要求.仿真分析和...
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| 关 键 词： | PD雷达 越距离单元走动 Keystone变换 Chirp-Z变换 实时性 |
Research on Implementation of Keystone Transform |
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| Wang Juan,Zhao Yongbo.Research on Implementation of Keystone Transform[J].Fire Control Radar Technology,2011,40(1):45-51. |
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| Authors: | Wang Juan Zhao Yongbo |
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| Affiliation: | (Xidian University,Xi′an 710071) |
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| Abstract: | In conventional pulse Doppler(PD) radar,range migration will occur when coherent accumulation time is long,bandwidth of signals is very broad or target velocity is high,which will affect radar detection performance.Keystone transform is a commonly used method to correct range migration.Three implementation ways of Keystone transform are studied,computation load comparison between these implementation ways shows that Chirp-Z transform can preferably satisfy requirement of system real-time performance.Computer simulation and measured data processing results confirm the validity of the algorithms. |
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| Keywords: | PD radar range migration Keystone transform chirp-Z transform real-time performance |
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