[1]张卫,唐希源,顾红,等.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,(04):513-518.
 ZHANG Wei,TANG Xi-yuan,GU Hong,et al.Ambiguity Function Analysis of OFDM Radar Signals[J].Journal of Nanjing University of Science and Technology,2011,(04):513-518.
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OFDM 雷达信号模糊函数分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2011年04期
页码:
513-518
栏目:
出版日期:
2011-08-31

文章信息/Info

Title:
Ambiguity Function Analysis of OFDM Radar Signals
作者:
张卫1唐希源2顾红1苏卫民1
1. 南京理工大学电子工程与光电技术学院,江苏南京210094; 2. 上海交通大学微电子学院,上海200240
Author(s):
ZHANG Wei1TANG Xi-yuan2GU Hong1SU 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
关键词:
雷达信号分析 正交频分复用 模糊函数
Keywords:
radar signal analysis orthogonal frequency division multiplexing ambiguity function
分类号:
TN95
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。
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 requires no direct computation of the modulated signals and the ambiguity is derived from the modulating sequence.

参考文献/References:

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[2] Weinstein S,Ebert P. Data transmission by frequencydivision multiplexing using the discrete Fourier transform[J]. IEEE Transactions on Communication Technology, 1971, 19( 5) : 628-634.
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[7] Prasad N N S S R K, Shameem V,Desai U B, et al. Improvement in target detection performance of pulse coded Doppler radar based on multicarrier modulation with fast Fourier transform( FFT) [J]. IEE Proceedings—Radar Sonar Navig, 2004, 151( 1) : 11-17.
[8] Franken G E A,Nikookar H, van Genderen P. Doppler tolerance of OFDM-coded radar signals[A]. Proceedings of the 3rd European Radar Conference[C]. Manchester, UK: IEE, 2006: 108-111.
[9] 顾陈,张劲东,朱晓华. 基于OFDM 的多载波调制雷 达系统信号处理及检测[J]. 电子与信息学报, 2009, 31( 6) : 1298-1300.
[10] Gu Chen,Zhang Jingdong,Zhu Xiaohua. Resolution performance analysis for multicarrier phase-coded signal[A]. Congress on Image Signal Processing[C]. Sanya,Hainan,China: IEEE, 2008: 193-196.
[11] 林茂庸,柯有安. 雷达信号理论[M]. 北京: 国防工 业出版社, 1981
[12] Levonan N,Mozeson Eli. Radar signals [M]. New York: John Wiley & Sons, Inc, 2004.

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备注/Memo

备注/Memo:
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 作者简介: 张卫( 1983-) ,男,博士生,主要研究方向: OFDM 信号雷达,E-mail: zhangwei_njust@163. com; 通讯作者: 顾 红( 1967-) ,男,教授,博士生导师,主要研究方向: 雷达信号处理与新体制雷达,E-mail: guhong666@ mail. njust. edu. cn。
更新日期/Last Update: 2012-10-23