SAFETY OF DYNAMIC POSITIONING DURING DEGRADETED CONDITION OF SATELLITE RADIO NAVIGATION SYSTEM
https://doi.org/10.33815/2313-4763.2019.2.21.004-009
Abstract
In the paper it was considered the issue of dynamic positioning safety of mobile water transport objects during time-space interval of high-precision navigation when the amount of visible navigational satellites is reduced by specific of performed technological work or by the fact that the signal strength of navigation satellites of satellite radio navigation system is seriously weakened by obstacles from different sources. The purpose of the study is to guarantee the safety of DP ROVT in conditions where the equipment of the consumer is not capable of receiving signals of a sufficient number of emergencies. An alternative approach to determining the location of a moving water transport object is proposed. The conditions and factors that may interfere with the work of the SNAs in the water area during the development of offshore resources of Ukraine are identified. Perspective directions of further scientific researches are defined. An alternative approach to determining the location of a mobile water transport object was proposed. The perspective directions of further scientific researches are determined. Based on previous studies of the observability of navigation parameters to solve the problem of guaranteeing the safety of the DP in conditions where the space-time interval of high-precision navigation, the number of visible NS decreases due to the specifics of the technological work being performed or from the fact that the signal strength of the NRC NS is seriously impaired by obstacles, an alternative approach for determining the location of the PWT is proposed.
A system of equations is developed to determine the coordinates of the ROVT under conditions of insufficient information. The conditions and factors that may interfere with the work of the SNAs in the water area during the development of offshore resources of Ukraine are identified.
The practical implementation on board the ROVT requires the introduction of additional technical means of measurement and data processing for finding: angle of location and azimuth, which is a promising direction for further research
References
2. Order No. 904 of the MTU dated 20.11.2003. «On approval of the Regulations on the system of safety management of navigation on the sea and river transport». - Kyiv: Official Gazette of Ukraine, 2004. - No. 52 (January 9, 2004) (part 2). - P. 2844.
3. A. Soloviov - “Satelite Navigation Systems” / Yuri Alexandrovich Soloviov – Moscow: Eco-Trends, 2000. – 267 р.
4. R.A. Gabruk. Ensuring safety of navigation by monitoring the navigation parameters observability / R.A. Gabruk, I.Y. Goryshna / Metrology and appliances. Scientific production journal. – Kharkiv: KhNURE, 2016 – Issue №4 (60). - P. 62-64
