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Signal Analysis of Through-the-Wall Surveillance


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Signal Analysis of Through-the-Wall Surveillance
GUO Shan-hongSUN Jin-taoXIE Ren-hong
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094
through-the-wall surveillance echo signals simple harmonic vibration continuous waves
Through-the-Wall Surveillance(TWS) is a kind of detection technique for finding human beings behind barriers.The echo signal of TWS detector which is based on continuous wave is investigated.The signal expression is derived,and a simple harmonic vibration model based on the movement characteristics of human body is applied.The expression is extended in Bessel series.Experimental measurement is accomplished to verify the theoretical derivation.The comparison of experimental signals to simulated signals indicates that they are well fit.The difference of the echo signal of TWS detector between with-or-without-wall is analyzed,and it shows that the breath movement component is primary when a human being is detected through a wall.The results are useful for further study on signal processing of TWS detector.


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Last Update: 2012-12-19