| OFDM雷达信号模糊函数分析 |
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| 引用本文： | 张卫,唐希源,顾红,苏卫民.OFDM雷达信号模糊函数分析[J].南京理工大学学报(自然科学版),2011(4). |
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| 作者姓名： | 张卫 唐希源 顾红 苏卫民 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院;上海交通大学微电子学院; |
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| 基金项目： | 部预研基金(9140A07010311BQ02); 南京理工大学自主科研专项计划资助项目(2010ZDJH05); 深圳大学ATR重点实验室 |
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| 摘 要： | 为了解决正交频分复用(Orthogonal frequency division multiplexing,OFDM)信号雷达波形设计的问题,推导了OFDM雷达信号的单周期模糊函数,给出了单周期模糊函数与调制码字序列的关系。讨论了多周期模糊函数,分析了其旁瓣特性,提出一种抑制OFDM信号雷达多普勒旁瓣的相参脉冲串处理方法。以Barker码作为调制码字序列,给出了仿真结果。与传统方法相比,该文的方法不需要对已调制信号进行计算,而直接由调制码字序列得到OFDM雷达信号的周期模糊特性。
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| 关 键 词： | 雷达信号分析 正交频分复用 模糊函数 |
Ambiguity Function Analysis of OFDM Radar Signals |
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| ZHANG Wei,TANG Xi-yuan,GU Hong,SU Wei-min.Ambiguity Function Analysis of OFDM Radar Signals[J].Journal of Nanjing University of Science and Technology(Nature Science),2011(4). |
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| Authors: | ZHANG Wei TANG Xi-yuan GU Hong SU Wei-min |
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| Affiliation: | ZHANG Wei1,TANG Xi-yuan2,GU Hong1,SU Wei-min1(1.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China,2.School of Microelectronics,Shanghai Jiao Tong University,Shanghai 200240,China) |
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| Abstract: | To address the problem of waveform design,the periodic ambiguity function of orthogonal frequency division multiplexing(OFDM) radar signals is derived and its relationship with the modulating sequences is indicated.Multiple-period ambiguity function is further studied and the characteristics of the side-lobe are analyzed.A corresponding coherent pulse train processing method is proposed to reduce the Doppler side-lobe.Simulation results of Barker codes modulated OFDM radar signal are presented.This approach... |
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| Keywords: | radar signal analysis orthogonal frequency division multiplexing ambiguity function |
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