| 基于瞬时相位拟合的LFM信号参数估计算法 |
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| 引用本文： | 张西托,陈珊珊,胡冬梅,饶伟.基于瞬时相位拟合的LFM信号参数估计算法[J].舰船电子对抗,2010,33(1):115-117. |
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| 作者姓名： | 张西托 陈珊珊 胡冬梅 饶伟 |
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| 作者单位： | 1. 海军潜艇学院,青岛,266071
2. 中国石油大学,东营,257061 |
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| 摘 要： | 针对传统线性调频（LFM）信号参数估计算法中复杂的搜索和计算问题，提出了一种不需要参数搜索的快速LFM信号参数估计算法。该算法先用希尔伯特变换估计LFM信号瞬时相位，再用二次相位函数拟合LFM信号瞬时相位从而得到初始频率和调频斜率的估计。仿真验证了本文算法的有效性，说明该算法能够给出满意的参数估计结果。
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| 关 键 词： | 线性调频信号 希尔伯特变换 瞬时相位 拟合 |
Parameter Estimation Algorithm of LFM Signal Based on Instantaneous Phase Fitting |
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| ZHANG Xi-tuo,CHEN Shan-shan,HU Dong-mei,RAO Wei.Parameter Estimation Algorithm of LFM Signal Based on Instantaneous Phase Fitting[J].Shipboard Electronic Countermeasure,2010,33(1):115-117. |
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| Authors: | ZHANG Xi-tuo CHEN Shan-shan HU Dong-mei RAO Wei |
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| Affiliation: | 1.Navy Submarine Academy;Qingdao 266071;China;2.Petroleum University of China;Dongying 257061;China |
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| Abstract: | Aiming at the complicated searching and calculating problems in the parameter estimation algorithm of traditional linear frequency modulation(LFM) signal,this paper puts forward a kind of fast parameter estimation algorithm of LFM signal needn't the parameter searching,which firstly estimates the instantaneous phase of LFM signal by Hilbert transform,then uses the quadratic phase function to fit the instantaneous phase of LFM signal to obtain the estimation of initial frequency and frequency modulation slop... |
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| Keywords: | linear frequency modulation signal Hilbert transform instantaneous phase fitting |
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