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| Application of Cepstrum Filter to TDR Waveform Analysis |
| Feng Wei①②; Ji Yi-cai①; Fang Guang-you① |
①Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China;
②Graduate University of the Chinese Academy of Sciences, Beijing 100190, China |
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Abstract The data processing in complex cepstrum domain can restrain the echo-like multi-reflection wave. The TDR (Time Domain Reflectometry) waveforms are analyzed in complex cepstrum domain in this paper. By filtering in complex cepstrum domain, the multi-reflection waves are eliminated. Used the cepstrum analysis, the travel time on the probes are determined. Apparent permittivity of soil is inversed with the cepstrum analysis. The results inversed with the complex domain filter method is more accurate than tangent-lines method.
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Received: 25 December 2008
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2009, Vol. 31 
