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2 2017

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Application of an autonomous/unmanned survey vessel (asv/usv) in bathymetric measurements

100%

Specht C. , Świtalski E. , Specht M.

tom nr 3

36--44

The accuracy of bathymetric maps, especially in the coastal zone, is very important from the point of view of safety of navigation and transport. Due to the continuous change in shape of the seabed, these maps are fast becoming outdated for precise navigation. Therefore, it is necessary to perform periodical bathymetric measurements to keep them updated on a current basis. At present, none of the institutions in Poland (maritime offices, Hydrographic Office of the Polish Navy) which are responsible for implementation of this type of measurements has at their disposal a hydrographic vessel capable of carrying out measurements for shallow waters (at depths below 1 m). This results in emergence of large areas for which no measurement data have been obtained and, consequently, the maps in the coastal zones are rather unreliable. The article presents the concept of bathymetric measurements for shallow waters with the use of an autonomous, unmanned survey vessel (ASV/USV). For this purpose, the authors modernized a typical ASV/USV unit with standard radio remote control system to the fully autonomous mode. As part of the modernization, the route planning software was created. The developed software works based on, alternatively, GNSS measurements of the coastline, or satellite images. The system was supplemented by an own autopilot (adapted for flying drones). Moreover, the method of controlling electric motors was changed thanks to the use of own electronic circuit. The modernized ASV/USV measuring system was verified by performing bathymetric measurements of the retention reservoir in Gdansk, Poland. Then, the obtained measurement data were used to create a digital bottom model and a bathymetric map of the reservoir.

Mobile remote monitoring system of water reservoirs

86%

Opaliński A. , Głowacki M.

Technical Transactions

2017

tom Vol. 7(114)

175--182

The article presents the concept, architecture and testing of mobile monitoring system of water reservoirs. Its main elements are a remotely controlled boat with a sonar, which additionally records GPS data. The developed system could be used in several configurations for the achievement of functions such as generating bathymetric maps or the current monitoring of the bottom of a water reservoir. The main functionalities of the system have been tested and presented with the results of the tests and their analysis, conclusions and plan of further development.

W artykule przedstawiono koncepcję, architekturę oraz testy mobilnego systemu monitoringu zbiorników wodnych. Jego głównymi elementami są zdalnie sterowana łódź oraz echosonda rejestrująca dodatkowo dane GPS. Opracowany system może być wykorzystywany w kilku konfiguracjach, umożliwiając realizację funkcjonalności takich jak generowanie map batymetrycznych lub bieżący monitoring dna zbiornika wodnego. Główne funkcjonalności systemu zostały przetestowane i zaprezentowane wraz rezultatami testów, ich analizą, wnioskami i planem dalszego rozwoju.