摘要
目的为了从地质雷达测量数据中定量提取土路基的含水量。方法根据电磁理论和现代信号处理原理,提出了应用小波反射系数估计和层速度估计定量提取土体相对介电常数的方法,应用该方法对陕西本地的土壤介电常数和含水率进行了详细地研究并与实验测试数据相比较。结果小波反射系数估计法和层速度估计法是定量提取填土路基含水率非常有效且实用的方法。结论利用地质雷达结合土体的物理特性,可以实现公路填土路基土体含水量的无损定量检测。
Aim To get water content from measurement data of ground-penetrating radar.Methods Extracting relative dielectric constant for soils quantitatively by wavelet reflection coefficient estimation and layer velocity estimation according to electromagnetic theory and principles of modern signal processing.The dielectric constant and water content for local soils of Shaanxi Province were studied carefully and compared with experimental test data.Results The results show that this method is very effective and practical.Conclusion Water content of highway roadbed filling soils can be tested nondestructively and quantitatively using ground-penetrating radar.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第1期61-65,共5页
Journal of Northwest University（Natural Science Edition）
基金
陕西省科技攻关基金资助项目(2007K04-15)
关键词
探地雷达
相对介电常数
路基含水率
反射系数估计
层速度估计
ground penetrating radar
dielectric constant
water content
reflection coefficient estimation
layer velocity estimation
