CAJ | 학술논문

利用超宽带穿墙雷达探测跟踪墙后人体目标在城区巷战、反恐斗争和人质救援等领域的应用日益广泛.动目标检测与成像算法是穿墙雷达信号处理的两大关键部分,针对传统的动目标枪测方法的不足,本文研究了一种提取动目标回波信息的自适应背景去除方法,并考虑到墙体影响,对传统的后向投影成像算法进行改进.利用FDTD数值仿真和外场实验验证了对隐藏在墙后运动目标跟踪成像,研究结果表明,本文算法对天线形式要求简单,准确度高,实时性好.
이용초관대천장뢰체탐측근종장후인체목표재성구항전、반공두쟁화인질구원등영역적응용일익엄범.동목표검측여성상산법시천장뢰체신호처리적량대관건부분,침대전통적동목표창측방법적불족,본문연구료일충제취동목표회파신식적자괄응배경거제방법,병고필도장체영향,대전통적후향투영성상산법진행개진.이용FDTD수치방진화외장실험험증료대은장재장후운동목표근종성상,연구결과표명,본문산법대천선형식요구간단,준학도고,실시성호.
Detection and tracking of human targets behind walls with Ultra Wideband Through-Wall Radar(UWB TWR)have important application value in urban area operations,counter-terrorism and search-and-rescue missions.TWR signal processing consists of two key parts-moving target detection(MTD)and imaging algorithm.An adaptive background subtraction method for extracting the information of moving targets is presented in this paper,which outperforms conventional MTD techniques.Then an improved BP algorithm is also introduced,which considers the presence of walls.FDTD numerical simulations and experimental results validate that the proposed algorithm can be used to track and image moving targets behind walls.The results also show that the proposed algorithm has the characteristics of simple antenna array requirement,high position accuracy and real time imaging.