| 摘要: |
| 土壤含水量的快速、准确测量问题由于其特有的复杂性至今尚未得到圆满的解决。将微波传输线阻抗变换理论应用于土壤水分测量，据此理论提出的测量方案从数学上证明其可行，所设计出的便携式土壤水分测量仪不仅成本低，而且测量精度满足使用要求。 |
| 关键词: 传输线,特征阻抗,土壤水分,测量 |
| DOI： |
| 修订日期：1999-02-03 |
| 基金项目: |
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| An Instrument Based on Impedance Mapping of Transmission Line for Determination of Soil Water Content |
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| Abstract: |
| The accurate and efficient determination of soil water content is difficult since itscomplicated charateristics. The theory, so-called impedance mapping of transmission line, isproposed in the measurement of water content in soil. The measuring program based on itcan give the mathematical proof on its availiability. The portable instrument designed formeasuring water content in soil can meet the requirements on the cost and the measuringaccuracy. |
| Key words: transmission line,characteristic impedance,soil water content,measurement, |
