Imaging and Parameterizing Moisture in Road Sub Course Using Time Domain Reflectometry
- Resource Type
- Periodical
- Authors
- Platt, I.; Woodhead, I.; Harrington, P.; Tan, A.E.
- Source
- IEEE Sensors Journal IEEE Sensors J. Sensors Journal, IEEE. 16(12):4760-4766 Jun, 2016
- Subject
- Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Robotics and Control Systems
Roads
Transmission line measurements
Moisture
Imaging
Power transmission lines
Mathematical model
Seals
road
basecourse
moist content
Time Domain Reflectometry
TDR
- Language
- ISSN
- 1530-437X
1558-1748
2379-9153
This paper presents the experimental results of using a non-invasive time domain reflectometry (TDR) sensor to image and parameterize the moisture content of basecourse materials used in road construction. Imaging, resulting from the amplitude losses of a pulsed signal travelling down TDR transmission lines, is found to produce excellent information on the relative changes in basecourse moisture content to a spatial resolution $\sim 0.25$ % in volumetric moisture content is achieved when model coefficients are separately fitted for each of the two basecourse aggregate types tested.