基于LTE信号的浮空平台外辐射源雷达目标探测技术研究
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摘要
外辐射源雷达常用的调频广播、全球移动通信系统(GSM)等窄带信号照射源都具有较低的距离分辨率及多普勒分辨率。针对这一问题,提出了一种以宽带LTE(长期演进系统)信号作为照射源的浮空平台外辐射源雷达体制。阐述了该种体制雷达的目标探测原理,分析了LTE信号生成机理以及该信号的距离分辨率、速度分辨率、模糊函数及探测威力。计算机仿真表明,利用LTE信号能够成功实现目标探测。
Low range and velocity resolution is frequently encountered in the airship borne passive bistatic radar based on frequency modulated radio, global system for mobile communication and other narrowband signals. Aiming at the above situation, an airship borne passive bistatic radar system utilizing long term evolution(LTE) signal is proposed. The target detection methodology is described. And the method of LTE signal generation, range resolution, Doppler and velocity resolution, ambiguity function and coverage are analyzed. Computer simulations show that the airship borne passive bistatic radar based on LTE signal could accomplish the target detection task successfully.
Low range and velocity resolution is frequently encountered in the airship borne passive bistatic radar based on frequency modulated radio, global system for mobile communication and other narrowband signals. Aiming at the above situation, an airship borne passive bistatic radar system utilizing long term evolution(LTE) signal is proposed. The target detection methodology is described. And the method of LTE signal generation, range resolution, Doppler and velocity resolution, ambiguity function and coverage are analyzed. Computer simulations show that the airship borne passive bistatic radar based on LTE signal could accomplish the target detection task successfully.
引文
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[8] SALAH A A,ABDULLAH R S A R,ISMAIL A,et al.Feasibility study of LTE signal as a new illuminators of opportunity for passive radar applications[C]// 2013 IEEE International RF and Microwave Conference.Penang,Malaysia:IEEE Press,2013:258-262.
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[11] 黄硕.LTE信号的被动雷达波形分析[D].天津:天津大学,2012.HUANG Shuo.Wave anaiysis of LTE signals for passive radars[D].Tianjin:Tianjin University,2012.
[2] 卢开旺,杨杰,张良俊.基于OFDM信号的外辐射源雷达杂波信道估计[J].现代雷达,2014,36(3):23-28.LU Kaiwang,ZHANG Jie,ZHANG Liangjun.Passive bistaticradar clutter channel estimation based on OFDM signal[J].Modern Radar,2014,36(3):23-28.
[3] 罗敏.浮空器雷达载荷发展浅析[J].现代雷达,2010,32(6):14-16.LUO Min.Development analysis of aerostat-borne radar payload[J].Modern Radar,2010,32(6):14-16.
[4] WU Jianqi,ZHANG Guifeng.A joint processing scheme of the aerostat-borne radar for the low altitude targets detection in urban clutter environment[C]// 2015 16th International Radar Symposium.Dresden,Germauy:IEEE Press,2015:765-770.
[5] SANTAPIETRO J J.Persistent wide area surveillance from an airship[J].IEEE Aerospace & Electronic Systems Magazine,2012,27(6):11-16.
[6] WANG Wenqin.Near-space vehicles:supply a gap between satellites and airplanes for remote sensing[J].IEEE Aerospace & Electronic Systems Magazine,2011,26(4):4-9.
[7] SALAH A A,ABDULLAH R S A R,ISMAIL A,et al.Experimental study of LTE signals as illuminators of opportunity for passive bistatic radar applications[J].Electronics Letters,2014,50(7):545-547.
[8] SALAH A A,ABDULLAH R S A R,ISMAIL A,et al.Feasibility study of LTE signal as a new illuminators of opportunity for passive radar applications[C]// 2013 IEEE International RF and Microwave Conference.Penang,Malaysia:IEEE Press,2013:258-262.
[9] ABDULLAH R S A R,SALAH A A,ISMAIL A,et al.LTE-based passive bistatic radar system for detection of ground-moving targets[J].Electronics Telecommunications Research Institute Journal,2016,38(2):302-313.
[10] DAHLMAN E.3 G演进:HSPA与LTE[M].北京:人民邮电出版社,2010.DAHLMAN E.3G Evolution:HSPA and LTE[M].Beijing:Posts & Telecom Press,2010.
[11] 黄硕.LTE信号的被动雷达波形分析[D].天津:天津大学,2012.HUANG Shuo.Wave anaiysis of LTE signals for passive radars[D].Tianjin:Tianjin University,2012.