| 摘要: |
| 介绍了6050X1型时域反射仪(TDR)的基本结构和测定土壤含水率的原理，通过试验分析了它对导棒材料性质及导棒长度的灵敏性。结果表明，用铜和不锈钢做波导棒效果基本一致，导棒实际长度与输入长度的微小偏差对含水率的测量结果影响很小，且导棒越长影响越小。 |
| 关键词: 时域反射仪，波导棒，土壤含水率，灵敏性 |
| DOI： |
| 分类号:S237 |
| 基金项目:中科院“百人计划”及国家自然科学基金资助项目 |
|
| The Measuring Principle and the Sensitivity of 6050X1 Time Domain Reflectometry |
|
Zhang Shuhan 1 Kang Shaozhong 1 2 Zhang Fucang 1 Hu Xiaotao 1 Shi Shibin 3
|
| Abstract: |
| This paper introduced a principle for measuring soil and water content with 6050X1 Time Domain Reflectometry and its constitution.Based on field experiments and theoretical analysis,the sensitivity of TDR to the nature of wave guide materials and to the length of wave guide was studied.The results showed that to measure the soil and water content with copper wave guides had the same effect as with wave guides made from stainless steel,that the small difference between real wave guide length and inputted length exercised slight influence on soil and water content measurement and that the longer the wave guide the slighter the influence was. |
| Key words: time domain reflectometry, wave guide,soil and water content,sensitivity |
