IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic A: Advances in the Fundamentals of Water Science and Engineering : Mapping river dynamics with the electronic floats equipped with gps receivers
Mapping river dynamics with the electronic floats equipped with gps receivers
Author : C. Lee, H. Lee, W. Kim, D. Kim
Recently introduced riverine hydraulic measurement techniques combined with outcomes of global positioning and remote-sensing technologies provide georeferenced information on river dynamics that previously would have been impossible. In this study, we developed the electronic float by attaching an integrated module composed of GPS and radio-frequency wireless communication chipset to the top of the conventional rod float used for simply making flood discharge measurement. The electronic float flows along the river, receiving information on its absolute position and transmitting it to the field hydrographer. With use of three different channels, position information on fifteen rover floats can be simultaneously acquired with one base station. After calibration and spatial interpolation and averaging, position information on each electronic float is used for calculating plane 2D velocity and additionally, discharge with cross-section area. Furthermore, when it is provided with web-based global satellite imagery like GoogleEarthTM, hydrogeographic information is easily serviced to common people as well as experts in water resources. Since the electronic float is unmanned instrument, safe measurement can be made even at nighttime and hazardous condition such as flood and nasty weather. It is also expected to be widely utilized for flow measurement at reservoirs, water intakes, spillway approaches, coast, et. al.
File Size : 1,364,978 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic A: Advances in the Fundamentals of Water Science and Engineering
Date Published : 09/08/2009
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