Contactless Detection of State Parameter Fluctuations of Gaseous Media Based on an mm-Wave FMCW Radar

被引：26

作者：

Baer, Christoph ^{[1
]}

Jaeschke, Timo ^{[1
]}

Pohl, Nils ^{[2
]}

Musch, Thomas ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Elect Circuits, D-44801 Bochum, Germany

[2] Fraunhofer Inst Hochfrequenzphys & Radartech, D-53343 Wachtberg, Germany

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2015年 / 64卷 / 04期

关键词：

Frequency Modulated Continuous Wave (FMCW) radar; gas permittivity; millimeter wave (mm-wave); mixing equation; DIELECTRIC-CONSTANT;

D O I：

10.1109/TIM.2014.2374696

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this contribution, we present an approach on the fluctuation detection of gaseous media concerning their state parameter, i.e., concentration, pressure, and temperature. Dielectric mixing equations that link the gas permittivity with the gas concentration and pressure are introduced and discussed. Furthermore, we prove the small temperature influence on the gas permittivity, because of the obvious temperature-pressure dependence of gaseous media. To verify the suggested gas permittivity theory, a pressure-resistant test container was constructed and built up. By means of a highly precise millimeter-wave radar system, we performed numerous test series on different gases for various investigations.

引用

页码：865 / 872

页数：8

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