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Issue:
Signal Analysis of Through-the-Wall Surveillance
Author(s):
GUO Shan-hong
,
SUN Jin-tao
,
XIE Ren-hong
Pages:
594
-
598
Year:
2008
Issue:
5
Journal:
JOURNAL OF NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Keyword:
穿墙生命探测
;
信号回波
;
简谐振动
;
连续波
;
Abstract:
穿墙生命探测(TWS)是研究障碍物后有无生命现象的一种探测技术.该文主要研究基于连续波体制的TWS探测器回波信号.推导了这种探测器的回波信号表达式,根据生命体征特点,采用简谐振动模型,利用贝塞尔函数对回波信号展开分析并进行了实验验证.实测信号和仿真信号的比较结果表明二者吻合良好.详细分析了穿墙前后TWS探测器回波变化特征,指出穿墙后信号处理的重点是对呼吸信号的检测.
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