Abstract
Distributed Temperature Sensor features measurement and recording of multipoint temperature with a single line of optical fiber. This sytem is applied to measure surface temperature on the snow melting road by flowing water through the underground embedded pipes. Surface temperature over the embedded pipes decreases with the temperature decrease of water in the pipe. However, the surface temperature of the road is affected by the distribution of the embedded pipes, the direction of water flow through pipes and the structure of the road. The surface temperature tends to decrease at the edge of the road, therefore, the temperature values show periodic variation with 9m period which is the double of road width.
