中文摘要：

该文首先详细分析了无载频脉冲雷达检测生命信号的基本原理,然后提出了基于回波信号等幅度追踪法检测生命信号的方法。采用自主研发的雷达系统进行检测,结果表明该文提出的检测方法有效。该方法不但能准确判定生命体的有无,而且能够同时提供呼吸信号幅度、频率特征及生命体的位置信息,在短距离非接触式生命信号检测中较传统等距离法有明显优势。

英文摘要：

In this paper, a novel method, i.e., the equi-amplitude tracing method applicable to the detecting of vital signal is presented based on the analyses of the principle of vital signal detecting by means of base-band UWB radar. The self-developed UWB radar test set-up experiments demonstrate that the detecting scheme and the signal processing algorithm are feasible. The respiratory signal amplitude and frequency spectrum characteristics and the distance between the object and the antenna can be obtained simultaneously with distinct advantage over traditional equi-distance detecting method.