NDLI: Profiling river surface velocities and volume flow estimation with bistatic UHF RiverSonde radar

Content Provider	IEEE Xplore Digital Library
Author	Barrick, D. Teague, C. Lilleboe, P. Cheng, R. Gartner, J.
Copyright Year	2003
Description	Author affiliation: CODAR Ocean Sensors Ltd., Los Altos, CA, USA (Barrick, D.; Teague, C.; Lilleboe, P.)
Abstract	During the summer of 2000, a bistatic UHF radar - the RiverSonde - was designed, built, and tested on rivers and canals in the Central Valley of California. The transmitter and receiver were on opposite banks. They simultaneously transmit to and receive from elliptical time-delay cells that span the river, with the transmit and receive antennas as their focal points. With 30 MHz bandwidth, the cell span up/down-river is /spl sim/10 m. A three-element receive array employs the direction finding music algorithm to determine echo bearing. Velocity along the river channel is measured vs position across the river from the first-order Bragg-echo Doppler shifts. Radiating less than 1 w power, received surface-echo signal-to-noise ratios of 40 dB were received, both across narrow canals and across the American River that was 80 meters wide. Our tests and analyses were sponsored by and conducted along with the U.S. Geological Survey in Menlo Park, CA. "Surface truth" velocity profiles were established by current meters suspended from a boat, from a bridge, and from timing the drifts of tennis balls between two transverse cuts. RMS velocity differences between 6%-13% of the typical average flow velocity were observed. The rms differences between the three "surface truth" measurements themselves also fell within the same span. From the velocity profiles across the river, estimates of total volume flow for the four methods were calculated based on a knowledge of the bottom depth vs position across the river. The flow comparisons for the American River were much closer, within 2% of each other among all of the methods. Sources of positional biases and anomalies in the RiverSonde measurement patterns along the river are identified and discussed.
Sponsorship	Current Meas. Technol. Committee of the Oceanic Eng. Soc. IEEE
Starting Page	55
Ending Page	59
File Size	400731
Page Count	5
File Format	PDF
ISBN	078037813X
DOI	10.1109/CCM.2003.1194283
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rivers Geologic measurements Testing Irrigation Position measurement Radar antennas Transmitters Receiving antennas Bandwidth Multiple signal classification
Content Type	Text
Resource Type	Article

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Canal and river tests of a RiverSonde streamflow measurement system

Geometries for streamflow measurement using a UHF RiverSonde

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Profiling river surface velocities and volume flow estimation with bistatic UHF RiverSonde radar

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