基于超宽谱雷达多目标穿墙探测定位技术的研究

Research of through-wall detection and location technique for multihuman targets using ultra wideband radar

目的 :提高超宽谱(ultra wide-band,UWB)生命探测雷达的探测效率,解决多目标、多方位探测中的目标同时探测和定位问题。方法:采用三通道UWB雷达系统(1个发射天线、3个接收天线)对静止站立的多目标进行信号采集,采用反投影方法等对信号进行处理和目标定位,并对这种二维定位方法进行效能评估。结果:该方法可以对少于等于3个的人体目标实现有效探测,并给出目标的二维位置信息。结论:该技术实现了多目标、多方位的穿墙探测识别和定位,对提高探测效率、提升生命探测雷达的实用化水平有重要意义。

Objective To improve detecting efficiency by using ultra wideband（UWB） life detecting radar, and to realize simultaneous seeking and location during multi-target and-direction detection. Methods Signals of multi-stationary-human targets were collected by using a triple-channel UWB radar system with one transmitting antenna and three receiving antennas,and back projection method was used to process signals and locate the targets. The efficacy of the two-dimensional location technique was evaluated via experiments. Results It＇s found that the technique could detect 3 persons or less effectively and present two-dimensional location information. Conclusion The technique realizes through-wall detection and location for multihuman and-direction targets, and enhances the practicability of life detecting radar.