基于椭圆交叉算法的人体目标定位
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摘要
介绍了测量所用的时域超宽带雷达的结构和工作原理,基于椭圆交叉算法,使用脉冲对消法从雷达的时域回波中提取出两个接收天线的信号到达时间,同时消除了背景杂波和天线耦合信号对定位的影响,实现了时域超宽带雷达对室内人体目标的定位。室内定位的实际测试结果表明,该方法可靠性好,定位精度较高,抗干扰能力较强。
In this paper, the structure and working principle of time domain ultrawideband(UWB) radar used in measurement are introduced. Based on elliptic cross algorithm, the signal time difference of arrival(TDOA) of two receiving antennas is extracted from UWB radar time domain echoes by pulse cancellation method, and the influence of background clutter and antenna coupling signal on positioning is eliminated to realize the location of indoor human targets by time domain UWB radar. The actual test results of indoor positioning show that the method has good reliability, high positioning accuracy and good anti-interference ability.
In this paper, the structure and working principle of time domain ultrawideband(UWB) radar used in measurement are introduced. Based on elliptic cross algorithm, the signal time difference of arrival(TDOA) of two receiving antennas is extracted from UWB radar time domain echoes by pulse cancellation method, and the influence of background clutter and antenna coupling signal on positioning is eliminated to realize the location of indoor human targets by time domain UWB radar. The actual test results of indoor positioning show that the method has good reliability, high positioning accuracy and good anti-interference ability.
引文
[1] 陈永峰.穿墙雷达人体回波检测与跟踪算法研究[D].成都:电子科技大学,2012.(CHEN Yong-feng.Research on human body echo detection and tracking algorithm of penetrating radar[D].Chengdu:University of Electronic Science and Technology,2012.)
[2] GEZICI S,TIAN Z,GIANNAKIS G B.Localization via ultra-wideband radios:A look at positioning aspects of future sensor networks[J].IEEE Signal Process Mag,2005,22(4):70-84.
[3] 邓平,季莉,范志平.一种TDOA/AOA混合定位算法及其性能分析[J].电波科学学报,2010,17(6):633-636.(DENG Ping,JI Li,FAN Zhi-ping.A hybrid TDOA/AOA location algorithm and its performance analysis [J].Chinese Journal of Radio Science,2010,17(6):633-636.)
[4] 吴绍华,张乃通.基于UWB的无线传感器网络中的两步TOA估计法[J].软件学报,2007,18(5):1 164-1 172.(WU Shao-hua,ZHANG Nai-tong.Two-step TOA estimation method for UWB based on wireless sensor networks[J].Journal of Software,2007,18(5):1 164-1 172.)
[5] 陈维克,李文锋,首珩,等.基于RSSI的无线传感器网络加权质心定位算法[J].武汉理工大学学报,2006,30(2):265-268.(CHEN Wei-ke,LI Wen-feng,SHOU Heng,et al.Weighted centroid localization algorithm based on RSSI for wireless sensor network[J].Journal of Wuhan University of Technology,2006,30(2):265-268.)
[6] 梁加洋,苏文璞,赵拥军,等.基于联合TDOA/FDOA的单站无源相干定位CWLS算法 [J].电子信息对抗技术,2018,33(5):31-36.(LIANG Jia-yang,SU Wen-pu,ZHAO Yong-jun,et al.A single-observer passive coherent location CWLS algorithm based on joint TDOA/FDOA [J].Electronic Information Countermeasures Technology,2008,33(5):31-36.)
[7] 肖竹,王勇超,田斌,等.超宽带定位研究与应用回顾和展望 [J].电子学报,2011,39(1):133-140.(XIAO Zhu,WANG Yong-chao,TIAN Bin,et al.Development and prospect of ultra-wide band localization research and application [J].Acta Electronica Sinica,2011,39 (1) :133-140.)
[8] BARRIER G.UWB impulse radar characterization and processing techniques [R].DRDC-OTTAWA-TR-2004-251,2004.
[9] 丁鹭飞.雷达原理[M].西安:西安电子科技大学出版社,2002:39-55.(DING Lu-fei.Radar Principle [M].Xidian University Press,2002:39-55.)
[10] 宋华,李禹.超宽带穿墙探测雷达的运动目标检测技术[J].电讯技术,2004,5(6):133-137.(SONG Hua,LI Yu.Detection for moving target based on ultra wideband through wall detecting radar[J].Telecommunications Engineering,2004,5(6):133-137.)
[11] 贺峰,宋华.超宽带雷达运动人体目标检测与特征提取关键技术研究[D].长沙:国防科技大学,2011.(HE Feng,SONG Hua.Research on key technologies of wideband/ultra-wideband radar detection and signature extraction of locamotor human target [D].Changsha:University of National Defense Technology,2011.)
[12] NAG S,BARNES M.A moving target detection filter for an ultra-wideband radar [C]// Proceedings of the 2003 IEEE Radar Conference,2003:147-153.
[13] 段凯宇,张力军.一种改进的无线定位算法[J].信号处理,2006,22(4):528-531.(DUAN Kai-yu,ZHANG Li-jun.An improved wireless location algorithm based on Taylor series expansion [J].Signal Processing,2006,22(4):528-531.)
[14] 贺峰,朱国富,牟妙辉,等.超宽带穿墙雷达对人体动目标探测的实验研究[J].现代雷达,2010,32(7):29-33.( HE Feng,ZHU Guo-fu,MOU Miao-hui,et al.Experimental study of life location detection based on ultra-wideband through wall radar[J].Modern Radar,2010,32 (7) :29-33.)
[15] 毛永毅,李明远,张宝军.一种NLOS环境下TOA/AOA定位算法[J].电子与信息学报,2009,31(3):37-40.(MAO Yong-yi,LI Ming-yuan,ZHANG Bao-jun.A TOA/AOA location algorithm in NLOS environment [J].Journal of Electronic & Information Technology,2009,31(3):37-40.)
[2] GEZICI S,TIAN Z,GIANNAKIS G B.Localization via ultra-wideband radios:A look at positioning aspects of future sensor networks[J].IEEE Signal Process Mag,2005,22(4):70-84.
[3] 邓平,季莉,范志平.一种TDOA/AOA混合定位算法及其性能分析[J].电波科学学报,2010,17(6):633-636.(DENG Ping,JI Li,FAN Zhi-ping.A hybrid TDOA/AOA location algorithm and its performance analysis [J].Chinese Journal of Radio Science,2010,17(6):633-636.)
[4] 吴绍华,张乃通.基于UWB的无线传感器网络中的两步TOA估计法[J].软件学报,2007,18(5):1 164-1 172.(WU Shao-hua,ZHANG Nai-tong.Two-step TOA estimation method for UWB based on wireless sensor networks[J].Journal of Software,2007,18(5):1 164-1 172.)
[5] 陈维克,李文锋,首珩,等.基于RSSI的无线传感器网络加权质心定位算法[J].武汉理工大学学报,2006,30(2):265-268.(CHEN Wei-ke,LI Wen-feng,SHOU Heng,et al.Weighted centroid localization algorithm based on RSSI for wireless sensor network[J].Journal of Wuhan University of Technology,2006,30(2):265-268.)
[6] 梁加洋,苏文璞,赵拥军,等.基于联合TDOA/FDOA的单站无源相干定位CWLS算法 [J].电子信息对抗技术,2018,33(5):31-36.(LIANG Jia-yang,SU Wen-pu,ZHAO Yong-jun,et al.A single-observer passive coherent location CWLS algorithm based on joint TDOA/FDOA [J].Electronic Information Countermeasures Technology,2008,33(5):31-36.)
[7] 肖竹,王勇超,田斌,等.超宽带定位研究与应用回顾和展望 [J].电子学报,2011,39(1):133-140.(XIAO Zhu,WANG Yong-chao,TIAN Bin,et al.Development and prospect of ultra-wide band localization research and application [J].Acta Electronica Sinica,2011,39 (1) :133-140.)
[8] BARRIER G.UWB impulse radar characterization and processing techniques [R].DRDC-OTTAWA-TR-2004-251,2004.
[9] 丁鹭飞.雷达原理[M].西安:西安电子科技大学出版社,2002:39-55.(DING Lu-fei.Radar Principle [M].Xidian University Press,2002:39-55.)
[10] 宋华,李禹.超宽带穿墙探测雷达的运动目标检测技术[J].电讯技术,2004,5(6):133-137.(SONG Hua,LI Yu.Detection for moving target based on ultra wideband through wall detecting radar[J].Telecommunications Engineering,2004,5(6):133-137.)
[11] 贺峰,宋华.超宽带雷达运动人体目标检测与特征提取关键技术研究[D].长沙:国防科技大学,2011.(HE Feng,SONG Hua.Research on key technologies of wideband/ultra-wideband radar detection and signature extraction of locamotor human target [D].Changsha:University of National Defense Technology,2011.)
[12] NAG S,BARNES M.A moving target detection filter for an ultra-wideband radar [C]// Proceedings of the 2003 IEEE Radar Conference,2003:147-153.
[13] 段凯宇,张力军.一种改进的无线定位算法[J].信号处理,2006,22(4):528-531.(DUAN Kai-yu,ZHANG Li-jun.An improved wireless location algorithm based on Taylor series expansion [J].Signal Processing,2006,22(4):528-531.)
[14] 贺峰,朱国富,牟妙辉,等.超宽带穿墙雷达对人体动目标探测的实验研究[J].现代雷达,2010,32(7):29-33.( HE Feng,ZHU Guo-fu,MOU Miao-hui,et al.Experimental study of life location detection based on ultra-wideband through wall radar[J].Modern Radar,2010,32 (7) :29-33.)
[15] 毛永毅,李明远,张宝军.一种NLOS环境下TOA/AOA定位算法[J].电子与信息学报,2009,31(3):37-40.(MAO Yong-yi,LI Ming-yuan,ZHANG Bao-jun.A TOA/AOA location algorithm in NLOS environment [J].Journal of Electronic & Information Technology,2009,31(3):37-40.)