| 线性调频信号参数快速估计 |
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| 引用本文： | 冯小平,李晨阳.线性调频信号参数快速估计[J].电子信息对抗技术,2004,19(6):7-10. |
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| 作者姓名： | 冯小平 李晨阳 |
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| 作者单位： | 西安电子科技大学,电子对抗研究所,陕西,西安,710071 |
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| 摘 要： | 线性调频(LFM)信号参数检测是对SAR对抗的一个重要问题,本文在对用Radon-Wign er变换、快速解线调和最大似然(ML)估计和分析LFM信号的基础上,给出一种消除ML估计带来旁瓣的方法,进一步提出了一种局部快速搜索的最大似然估计法,并用于LFM信号的起始频率和调频斜率等参数的估计。最后给出了三种快速算法的计算机模拟结果。
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| 关 键 词： | 线性调频 RadonWigner变换 解线调 最大似然估计 |
| 文章编号： | CN51-1418(2004)06-0007-04 |
| 修稿时间： | 2003年11月12 |
Fast Estimation of Linear Frequency Modulated Signal Parameters |
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| Authors: | FENG Xiao-ping LI Chen-yang |
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| Abstract: | It is important to estimate parameters of Linear Frequency Modulated(LFM) Signal for countering synthetic aperture radar. Based on analyzing LFM signal with Radon-Wigner transform and fast dechirp as well as maximum likelihood (ML) estimation, a method of eliminating side lobe arise from ML estimation is brought forward. And then, a fast maximum likelihood estimation with part search is produced to estimate starting time and slope of LFM signals. Finally, the results of computer simulation about three fast algorithms are presented. |
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| Keywords: | LFM Radon-Wigner transform dechirp ML estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
