Wave measurements with a modified HydroBall® buoy using different GNSS processing strategies

Autor:	Rock Santerre, Nicolas Seube, Mohamed Ali Chouaer, Mathieu Rondeau, Benoit Crépeau Gendron
Rok vydání:	2019
Předmět:	010504 meteorology & atmospheric sciences Buoy GNSS applications Geography Planning and Development Environmental science Center (algebra and category theory) 010502 geochemistry & geophysics 01 natural sciences 0105 earth and related environmental sciences Earth-Surface Processes Remote sensing
Zdroj:	Geomatica. 73:1-14
ISSN:	1925-4296 1195-1036
DOI:	10.1139/geomat-2018-0021
Popis:	One of the CIDCO’s (The Interdisciplinary Center for the Development of Ocean Mapping) HydroBall® GNSS buoys has been specifically adapted to evaluate its potential for wave measurement at centimeter accuracy level. Multiple GNSS processing strategies were tested, namely PPK (Post-Processed Kinematic), PPP (Precise Point Positioning), and TRP (Time Relative Positioning). Experiments were carried out in a hydraulic flume where waves of different amplitudes and periods were generated in a controlled environment. The wave heights obtained by the various GNSS solutions were compared with ultrasonic gauge measurements placed along the flume. The best results were obtained with the PPK and TRP solutions with root mean squared (RMS) values of 2 cm (on average). The main advantages of the TRP solution are that it does not require any reference station nearby (contrary to PPK) or precise ephemerides (required by PPP). A sinusoidal regression comparison of the wave height time series allowed determination of the wave period and amplitude with mean errors of 0.06 s and 0.8 cm, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bfc4c32155d029a75a4b524fec6fdad5 https://doi.org/10.1139/geomat-2018-0021 Zobrazit plný text záznamu