搜索结果: 1-13 共查到“知识库 农学 TDR”相关记录13条 . 查询时间(0.093 秒)
Rapid Percolation of Water through Soil Macropores Affects Reading and Calibration of Large Encapsulated TDR Sensors
gap preferential flow rain sensor installation
2015/7/28
The electromagnetic soil water content sensors are invaluable tools because of their selective sensitivity to water,
versatility, ease of automation and large resolution. A common drawback of most t...
Spatial and Temporal Distribution of Soil Water Content in Fields under Different Vegetation Conditions Based on TDR Measurements
electromagnetic wave Andisol multiple probes with different lengths
2009/9/10
TDR (Time-domain reflectometry) is an advanced method for monitoring the water content in fields.TDR measurements can provide accurate information about vegetation effects on both spatial and temporal...
Application of TDR measurement technology for construction materialsin semi-scale experiments**
moisture content two-needle TDR sensors semi-scale experiments construction materials
2008/11/26
Application of TDR (Time-Domain Reflecto- metry) measurement technology for the investigation of hygric performance for construction materials in the conditions of a semi- scale experiment is present...
Accuracy of soil moisture measurement by tdr technique
time domain reflectometry soil moisture measurement error
2008/11/26
The error in the measurement of volumetric water content by the TDR technique results from the correlation imperfections between the directly measured values of soil refractive index, n, and the real ...
Application of TDR measurement technology for construction materialsin semi-scale experiments: A practical example
moisture content TDR thermal insulation
2008/11/26
A practical example of the application of TDR (Time-Domain Reflectometry) measurement technology for investigation of hygric performance of systems of construction materials in a semi-scale experiment...
Effect of aggregate size on the water content estimated with time domain reflectance (TDR)
TDR calibration aggregated soil
2008/11/24
Time domain reflectance (TDR) gives reliable estimates of the water content of structure-less soil. The effect of soil structure on the performance of TDR has received relatively little attention in c...
Calibration of TDR for moisture determination in peat deposits
peat soils TDR calibration bulk density
2008/11/21
Determination of soil water content using the Time Domain Reflectometry (TDR) method is recently considered modern and widely used. The practical application of TDR requires its calibration ie determ...
Comparison of deep seepage estimations of a virtual with a real lysimeter by means of TDR-measurements
deep seepage TDR measurements lysimeter unsaturated hydraulic conductivity
2008/11/21
The virtual lysimeter concept was tested in comparison with a real lysimeter and found to be suitable for quantifying effective deep seepage dynamics in sandy soils. Discharge measurements and calcula...
Comparison of Open-Ended Coax and TDR sensors for the measurement of soil dielectric permittivity in microwave frequencies
TDR Open-Ended Coax sensor soil permittivity
2008/11/21
The study presents a comparison of two sensors for the determination of the complex permittivity of soil: a three- rod TDR probe and an Open-Ended Coax probe. The measurements were performed using a T...
Recent software improvements in moisture (TDR method), matric pressure,electrical conductivity and temperature meters of porous media
soil water content time domain reflectometry porous media user interface
2008/11/12
The FOM/mts (Field Operated Meter of moisture, temperature and salinity of soils) and TDR/MUX/mpts (Time Domain Reflectometry meter with a multiplexer for measurement of moisture, matric pressure, tem...
TDR and low-frequency measurements for continuous monitoring of moisture and density in a snow pack
snow density moisture time domain reflectometry
2008/11/12
An in-situ sensor for the simultaneous measurement of density and liquid water content of snow is presented in this paper. The system consists of radio frequency transmission lines of up to 25 m lengt...
Soil moisture and bulk electrical conductivity variability measured by TDR
TDR water content measurement soil heterogeneity random field parameters
2008/11/11
The result of numerous TDR measurements of heterogeneous soil water content are shown. Some statistical parameters of measured water content and bulk electrical conductivity fields are calculated. TDR...