Reserve navigation system for ships based on coastal radio beacons

Kelner, Jan M.; Ziółkowski, Cezary; Nowosielski, Leszek; Wnuk, Marian

doi:10.1109/plans.2016.7479726

Cited by 16 publications

(11 citation statements)

References 15 publications

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“…It is noteworthy that positioning accuracy can be improved by modernisation of existing positioning systems, launching new ones and developing reserve ones [8]. Alternatively, this can be achieved with a range of other solutions.…”

Section: Introductionmentioning

confidence: 99%

Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

Specht

Smolarek

Pawelski

et al. 2019

Polish Maritime Research

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This paper is the fourth in a series of publications presenting the process of installation, testing and long-term assessment of the navigational parameters of the Polish DGPS system. This series of publications intends to present – to the general public – the accomplishments of teams of Polish scientists who have been working for years to make the DGPS the main positioning system used in the Polish sea areas. A considerable part of the materials presented in this paper has never been published. The article presents changes in the position accuracy of the Polish DGPS system over 20 years. Both dynamic tests performed on vessels as well as static measurements campaigns were analysed. The publication contains selected results achieved in its installation and testing in 1995–1997 supplemented with the results of studies conducted in the years: 2006, 2010, 2014, 2017. During this period the position accuracy increased from 2–8 m (1996) to approx. 1–2 m (2010) due to three reasons: turning – off the Selective Availability (2000), technical modernization of reference stations (2010) and continuous – over many years – reducing GPS signal-in-space pseudorange errors, which results in increased position accuracy in all GPS augmentation systems.

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Section: Introductionmentioning

confidence: 99%

Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

Specht

Smolarek

Pawelski

et al. 2019

Polish Maritime Research

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“…or w j (t) = 0 for LOS and NLOS conditions, respectively, and J represents the number of mobile sensors in the swarm. The used weighted averaging procedure was based on a similar procedure presented in [55].…”

Section: Each Sensor Transmitted the Following Data Setmentioning

confidence: 99%

Effectiveness of Mobile Emitter Location by Cooperative Swarm of Unmanned Aerial Vehicles in Various Environmental Conditions

Kelner

Ziółkowski

2020

Sensors

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This paper focused on assessing the effectiveness of the signal Doppler frequency (SDF) method to locate a mobile emitter using a swarm of unmanned aerial vehicles (UAVs). Based on simulation results, we showed the impact of various factors such as the number of UAVs, the movement parameters of the emitter and the sensors on location effectiveness. The study results also showed the dependence of the accuracy and continuity of the emitter coordinate estimation on the type of propagation environment, which was determined by line-of-sight (LOS) or non-LOS (NLOS) conditions. The applied research methodology allowed the selection of parameters of the analyzed location system that would minimize the error and maximize the monitoring time of the emitter position.

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“…At the same time, methods of positioning improvement are applied both by such technical solutions as alternative positioning systems [Kelner, J.M. et al, 2016;Sadowski, J., Stefański, J., 2017], radar positioning [Stateczny, A. et al, 2019] and multi-GNSS (Global Navigation Satellite System) solutions [Specht, C. et al, 2019a;Yang, C. et al, 2016] using Kalman filtering [Xinchun, Z. et al, 2016].…”

Section: Introductionmentioning

confidence: 99%

Polish DGPS System: 1995-2018 – Studies of Reference Station Operating Zones

Specht¹,

Specht²,

Dąbrowski³

2019

TransNav

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The operating zone of a radio navigation system is one of its main operating features. It determines the size of a water body in which the system can be used, while guaranteeing vessels' navigation safety. The DGPS system in the LF/MF range is now the basic positioning system in coastal waters around the world, which guarantees not only metre positioning accuracy, but it is also the only one to provide navigators with signals on positioning reliability. This paper describes and summarises over twenty years of studies dealing with the operating zone of the Polish DGPS reference station network. This paper is the fifth in a series of publications whose aim was to present in detail the process of installation, testing and long-term evaluation of the navigational parameters of the Polish DGPS system, launched in 1995. This paper includes the theoretical foundations of determination of the Dziwnów and Rozewie DGPS reference station operating zones in the years 1995-2018. Moreover, it presents the measurement results for the signal levels and the results of their analyses, which determine the station operating zones. http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volume 13 Number 3

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Reserve navigation system for ships based on coastal radio beacons

Cited by 16 publications

References 15 publications

Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

Effectiveness of Mobile Emitter Location by Cooperative Swarm of Unmanned Aerial Vehicles in Various Environmental Conditions

Polish DGPS System: 1995-2018 – Studies of Reference Station Operating Zones

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