| 基于匹配傅里叶变换的高动态载波捕获技术 |
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| 引用本文： | 高秀英,吴长奇,王兰芳.基于匹配傅里叶变换的高动态载波捕获技术[J].通信技术,2010,43(3):19-20,23. |
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| 作者姓名： | 高秀英 吴长奇 王兰芳 |
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| 作者单位： | 燕山大学,信息科学与工程学院,河北,秦皇岛,066004 |
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| 摘 要： | 文中根据高动态信号的特点,采用匹配傅里叶变换来估计载波的多普勒频偏和线性调频率。仿真结果和分析表明匹配傅里叶变换对高动态信号的捕获具有较好的效果,并进一步提出改进算法,采用变采样处理技术与＂变中频滤波器＂相结合的方法更快速、更准确地对高动态信号进行捕获。
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| 关 键 词： | 高动态信号 匹配傅里叶变换 变中频滤波 |
High Dynamical Carrier Acquisition Technology based on Discrete Matching Fourier Transform |
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| GAO Xiu-ying,WU Chang-qi,WANG Lan-feng.High Dynamical Carrier Acquisition Technology based on Discrete Matching Fourier Transform[J].Communications Technology,2010,43(3):19-20,23. |
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| Authors: | GAO Xiu-ying WU Chang-qi WANG Lan-feng |
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| Affiliation: | GAO Xiu-ying,WU Chang-qi,WANG Lan-feng (College of Information Science , Engineering,Yanshan University,Qinhuangdao Hebei 066004,China) |
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| Abstract: | For the characteristic of high dynamical signal,Matching Fourier Transform is proposed to estimate Doppler frequency shifts and linear frequency.The simulation results and analysis show that the method could realize the acquisition of high dynamical signal,then an improved method is proposed,which combines changeable sample ratio processing technology with changeable central frequency filter,thus realizing the fast and exact acquision of high dynamical signal. |
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| Keywords: | high dynamical signal Matching Fourier Transform changeable central frequency filter |
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