| 一种Chirp雷达包络对齐新方法 |
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| 引用本文： | 夏卓卿,陆军,陈伟建.一种Chirp雷达包络对齐新方法[J].雷达科学与技术,2010,8(1):44-48. |
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| 作者姓名： | 夏卓卿 陆军 陈伟建 |
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| 作者单位： | 1. 电子科技大学通信与信息工程学院,四川成都,610054
2. 中国电子科学研究院,北京,100041 |
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| 摘 要： | 长时间相参积累是提高Chirp雷达对微弱目标检测能力的主要方法之一。但是,目标的径向运动会引起目标回波在脉冲间发生包络走动从而影响积累性能。首先分析了Chirp雷达中包络走动对长时间相参积累性能的影响,然后提出了一种基于频域校正的Chirp雷达包络对齐新方法。分析了其原理、步骤并通过仿真表明该算法能大大地改善积累性能。最后在运算量上与目前几种包络对齐方法进行了对比,通过分析对比表明其运算量大大低于目前的几种积累方法。
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| 关 键 词： | 长时间相参积累 包络走动 频域校正 运算量 |
A New Method to Correct Envelope Migration in Chirp Radar |
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| XIA Zhuo-qing,LU Jun,CHEN Wei-jian.A New Method to Correct Envelope Migration in Chirp Radar[J].Radar Science and Technology,2010,8(1):44-48. |
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| Authors: | XIA Zhuo-qing LU Jun CHEN Wei-jian |
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| Institution: | 1.School of Communication and Information Engineering/a>;University of Electronic Science and Technology of China/a>;Chengdu 610054/a>;China/a>;2.China Academy of Electronics and Information Technology/a>;China Electronic Technology Group Corporation/a>;Beijing 100041/a>;China |
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| Abstract: | The improvement of the capability to detect moving target with very small radar signature is usually realized by long time integration.However,the envelope migration which caused by target motion will influence the performance of the coherent integration.First the effect of envelope migration is analyzed.Then a new method based on frequency domain correction is presented to solve the problem.The principle and step of the method is analyzed and the effect is proved by simulation.Finally the operation amount ... |
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| Keywords: | long time integration envelope migration frequency domain correction operation amount |
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