目的:提高现有生命探测雷达的探测效率,实现多目标的探测和三维定位.方法:基于多通道UWB生命探测雷达平台,提出了一种可以对多个人体目标进行探测和三维定位的天线阵列——倒“T”形天线阵列,并建立了该天线阵列的数学模型,进行了大量仿真实验.结果:验证了该天线阵列对多目标进行三维定位的可行性和模型的正确性.结论:倒“T”形天线阵列可以实现多目标的三维定位,该研究对后续具有多目标三维定位功能的生命探测系统的设计与开发有一定的指导意义.%Objective To improve the detection efficiency of life-detection radar and achieve the goal of detecting and three-dimensional positioning for multi -targets. Methods Based on the platform of multiple channels ultra wideband (UWB) life-detection radar, an antenna array (inverted T-shaped antenna array) that could detect multi-targets and could three-dimensionally position the targets was put forward, the mathematical mode of which was established, and lots of simulation experiments were conducted. Results The feasibility of three-dimensional positioning for multi-targets and the correctness of mathematical mode were tested. Conclusion The inverted T -shaped antenna array can achieve the goal of three -dimensional positioning for multi-targets, which has guidance on the future designing and developing of a life detectingsystem.[Chinese Medical Equipment Journal,2011,33(3):6-8]
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