Application of Complez Cepstrum Filter in TDR Waveform Analysis

摘要：

Accurate measurement of traveling time on TDR probe is important to apparent permittivity test in TDR measurement system. TDR measurement waveform is composed of first main reflection and multireflections. Complex cepsturm filter can separate the first main reflection from the echo like multireflection waveforms of the original data. In this paper,multi-reflection model of TDR measurement system is illustrated and the TDR waveform is analyzed in complex cepstrum domain. After filtered in cepstrum domain,the first main reflection of TDR measurement is separated from original waveform. The simulated waveforms is calculated by TDR main reflection and multi-reflection model. The simulated waveform is close to the original waveform measured by TDR device. The experiment results of tap water,alcohol and soil sample show that filtering in cepstrum domain can achieve accurate apparent permittivity.

关键词： TDR complez cepstrum permittivity.

作者: Feng Wei Ji Yicai Fang Guangyou

作者单位: Intitute of Electronics,Chinese Academy of Sciences,Beijing,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 2947-2950

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）