摘要
近场区域的非接触式穿墙条件下运动人体的实时跟踪成像探测是超宽带雷达在火灾救援、安全保卫、城市巷战以及人身安全等方面的一个重要应用。该文基于超宽带短脉冲穿墙雷达,推导分析一种MIMO阵列排列方式,并在修正的Kirchhoff算法基础上引出简单适用的成像步骤应用于慢速运动人体的跟踪探测中,给出5 Hz的图像更新速率从而实现实时成像。仿真结果验证了新的MIMO阵列排列方式的有效性,并为穿墙雷达系统研制提供了依据。实验结果说明该文提出的成像步骤具有可行性,能够有效地实现墙后运动人体的实时成像,跟踪滤波处理后,可以获得较为理想的目标运动轨迹。
The UWB radar is a promising technique in fire rescue operations, police awareness, urban-warfare, life-threatening and other fields for noncontact measurement of the tracking and imaging of moving persons behind walls. Based on the UWB short-pulse through-wall radar, a strategy of the topology of the MIMO array is illustrated and the modified Kirchhoff algorithm is applied to slow-moving persons real-time imaging using a simple but effective imaging procedure. A video-like radar image with 5 Hz imaging rates is provided. Simulation results indicate that the topology of the MIMO array is useful for the through-wall radar system. The laboratory experiments are conducted to validate that the proposed imaging procedure is feasible and effective for slow-moving persons real-time imaging. The reasonable moving target trajectory can be obtained after the tracking and filtering process using the imaging results.
出处
《电子与信息学报》
EI
CSCD
北大核心
2012年第11期2601-2607,共7页
Journal of Electronics & Information Technology
基金
国家重点基础研究发展计划(2010CB73190103)资助课题
