Marine Current Meter Calibration Using GNSS Receivers,a Comparison with Commercial Method
Getting information from marine current requires that accurate and calibrated current meter is used. Current meter calibration is carried out in accordance with specific standard in calibration laboratories. To evaluate the performance and health of a current meter, one should compares velocity and heading it with a velocity and heading reference. In this paper, the innovative method for evaluate velocity and heading resulted from impeller marine current meter is presented. In this method, current meter is to be attached to buoy that is installed on it tow GNSS receivers; and by towing it in a lake, simultaneous velocity and heading of the current meter are recorded. Also data position of buoy by GNSS is recorded. Accurately calculated velocity and heading of buoy by using GNSS data to be used as a criterion to evaluate the current meter velocity and heading. Finally, the calibration equation that is known as the final result of the calibration process was determined for velocity and heading of current meter with reasonable accuracy. Also, current meter is tested in this paper evaluated commercial method in calibration laboratory. The results were compared with the results of the proposed method. The results indicated the success of the GNSS-based method for the Performance analysis of a marine current meter.
ISO 3455. “Hydrometry — Calibration of current- meters in straight open tanks.” (2007).
Hofmann-Wellenhof, Bernhard, Herbert Lichtenegger, and Elmar Wasle. GNSS–global navigation satellite systems: GPS, GLONASS, Galileo, and more. Springer Science & Business Media, 2007.
Beutler, G., H. Bock, R. Dach, P. Fridez, A. Gäde, U. Hugentobler, A. Jäggi et al. "User manual of the Bernese GPS Software Version 5.0." Astronomical Institute, University of Bern (2007).
Wang, QianXin, and TianHe Xu. "Combining GPS carrier phase and Doppler observations for precise velocity determination." Science China Physics, Mechanics and Astronomy 54, no. 6 (2011): 1022-1028.
Kaifei He. “GNSS Kinematic Position and Velocity Determination for Airborne Gravimetry.” geb. in Xianyang, Shaanxi, China. (2015).
Gang Lu .“Development of a GNSS Multi-Antenna System for Attitude Determination.” PhD Thesis. CALGARY, ALBERTA. (1995).
JiunHan Keong.“Determining Heading and Pitch Using a Single Difference GPS/GLONASS Approach.” MASTER OF SCIENCE THESIS. CALGARY, ALBERTA. (1999).
Rolland W. Carter.“Accuracy of current meter measurements.” United States Geological Survey,Washington, D.C., U.S.A. (1963).
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