Browse > Article
http://dx.doi.org/10.3741/JKWRA.2015.48.8.613

Development of High-performance Microwave Water Surface Current Meter for General Use to Extend the Applicable Velocity Range of Microwave Water Surface Current Meter on River Discharge Measurements  

Kim, Youngsung (K-water Institute, Korea Water Resources Corporation)
Won, Nam-Il (K-water Institute, Korea Water Resources Corporation)
Noh, Joonwoo (K-water Institute, Korea Water Resources Corporation)
Park, Won-Cheol (Gyeong-in Ara Waterway Business Division, Korea Water Resources Corporation)
Publication Information
Journal of Korea Water Resources Association / v.48, no.8, 2015 , pp. 613-623 More about this Journal
Abstract
To overcome the difficulties of discharge measurements during flood season, MWSCM(micowave water surface current meter) which measures river surface velocities without contacting water has been applied in field work since its development. The existing version of MWSCM is for floods so that its applicability is low due to the short periods of floods. Therefore the renovative redesign of MWSCM to increase the applicability was conducted so that it can be applied to the discharge measurements during normal flows as well as flood ones by extending the measurable range of velocity. A newly developed high-performance MWSCM for general use can measure the velocity range of 0.03-20.0 m/s from flood flows to normal flows, whereas MWSCM for floods can measure the velocity range of 0.5-10.0 m/s. The improvement of antenna isolation between transmitter and receiver to block the inflow of transmitted singals to receiver and the improvement of phase noise of oscillator are necessary for detecting low velocity with MWSCM technology. Separate type antenna of transmitting and receiving signals is developed for isolation enhancement and phase locked loop synthesizer as an oscillator is applied to high-performance MWSCM for general use. Microwave frequency of 24 GHz is applied to the new MWSCM rather than 10 GHz to make the new MWSCM small and light for convenient use of it at fields. Improvement requests on MWSCM for floods-stable velocity measurement, self test, low power consumtion, and waterproof and dampproof-from the users of it has been reflected on the development of the new version of MWSCM.
Keywords
MWSCM for floods; high-performance MWSCM for general use; microwave frequency; isolation; phase noise;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Costa, J.E., Spicer, K.R., Cheng, R.T., Haeni, F.P., Melcher, N.B., and Thurman, E.M. (2000). "Measuring stream discharge by non-contact methods: A proof-of-concept experiment." Geophys. Res. Lett., Vol. 27, pp. 553-556.   DOI   ScienceOn
2 Costa, J.E., Cheng, R.T., Haeni, F.P., Melcher, N., Spicer, K.R., Hayes, E., Plant, W., Hayes, K., Teague, C., and Barrick, D. (2006). Use of radars to monitor stream discharge by noncontact methods, Water Resources Research, 42, W07422, doi:10.1029/2005WR004430.   DOI
3 Fujita, I., and Komura, S. (1994). "Application of video image analysis for measurements of river-surface flows." Proc. of Hydraulic Engineering, JSCE, Vol. 38, pp. 733-738.   DOI
4 Hauet, A, Kruger, A., Krajewski, W.F., Bradley, A., Muste, M., and Wilson, M. (2005). Real-time estimation of discharge of the Iowa river using image-based method-user's manual. IIHR-Hydroscience and Engineering, The University of Iowa, Iowa City, IA.
5 Kim, S., Yu, K., and Yoon, B. (2011) "Real-time Discharge Measurement of the River Using Fixed-type Surface Image Velocimetry." J. of Korea Water Reso. Asso. Vol. 44, pp. 377-388.   DOI   ScienceOn
6 K-water (1994). Development of Measurement Facilities for Stream Discharge (Development of a Microwave Surface Velocity Meter and Supersonic Correlation Current Meter). WRRI-WR-94-1.
7 K-water (2008). Development of All-time Discharge Measuring System Using Microwave Water Surface Current Meter(2nd yr). KIWE-HRC-08-01.
8 K-water (2010). Improvement of Accuracy on Discharge Measurement Using Suface Velocity, KWI-WR-10-01
9 Lee, S.H., Kim, W.G., and Kim, Y.S. (1997). "Practical Aspects of Microwave Surface Velocity Meter Applied to Measurements of Stream Discharges." J. of Korea Water Reso. Asso. Vol. 30, pp. 671-678.
10 Lee, S.H., Lee, H.G., and Kim, W.G. (1995). "Velocity Measurement of Stream Water Surface Using Microwave." J. of Korea Water Reso. Asso. Vol. 28, pp. 183-191.
11 Miyamura, E., Nakajima,Y., and Yoshimura, A. (2012). "Full-scale Commercialized Microwave Doppler Current Meter-Fixed Doppler Current Meter & RYUKAN." New Era of River Discharge Measurement, Vol. 3, pp. 55-60. (in Japanese)
12 Muste, M., Xiong, Z., Bradley, A., and Kruger, A. (2000). "Large-scale particle image velocimetry-a reliable tool for physical modeling." ASCE 2000 Joint Conference on Water Resources Engineering and Water Resources Planning & Management, Minneapolis, Minnesota.
13 Yamaguchi, T. (1992). Flood Discharge Observation System Using Radio Current Meter, Foundation of River and Basin Integrated Communications, Japan.