|Table of Contents|

Ambiguity Function Analysis of OFDM Radar Signals

《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年04期
Page:
513-518
Research Field:
Publishing date:

Info

Title:
Ambiguity Function Analysis of OFDM Radar Signals
Author(s):
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
Keywords:
radar signal analysis;  orthogonal frequency division multiplexing;  ambiguity function
PACS:
TN95
DOI:
-
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．

References:

［1］ Chang R W． Synthesis of band-limited orthogonal signals for multichannel data transmission［J］． Bell System Technical Journal， 1966， 45: 1775－1797．
[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．
[3] Hwang Taewon，Yang Chenyang，Gang Wu． OFDM and its wireless applications: A survey ［J ］． IEEE Transactions on Vehicular Technology，2010，58 ( 4) : 1673－1694．
[4] Jankiraman M，Wessels B J，van Genderen P． Pandora multifrequency FMCW/ISFCW Radar［A］． Proceedings of IEEE International Radar Conference［C］． Alexandria， Virginia，USA: IEEE ， 2000: 750－757．
[5] Levanon N． Multifrequency complementary phasecoded radar signal［J］． IEE Proceedings—Radar Sonar Navig， 2000: 276－284．
[6] Levanon N，Mozeson E． Multicarrier radar signal-pulse train and CW［J］． IEEE Transactions on Aerospace and Electronic Systems， 2002， 38( 2) : 707－720．
[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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Last Update: 2012-10-23