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1
Content available The application of mixed reality and UAS technology in port decision-making process based on PASSport project
Gucma L., Muczyński B., Bilewski M., Gucma M., Nisi M.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2024
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Vol. 18 No. 1
127--132
EN
It is becoming increasingly important to provide a solution for managing the present mission and status of autonomous and semi-autonomous vehicles operating on site in large and complex port locations. More ports are implementing digital twin systems, which provide a complete 3D reconstruction of the port as well as real-time data on all objects and actions in progress. It is challenging to provide all relevant data in a way that improves situational awareness and decision-making, resulting in improved management and a faster, more effective response during an emergency. This is due to greater port areas and drones operating in the air, on the water's surface, and underneath. To solve this issue, the PASSport initiative, a project financed by the European Space Agency (EUSPA), is developing an innovative solution based on Mixed Reality (MR) technology. The solution combines real-time geo-tagged and Earth Observation data to provide end users with enhanced 3D representation of the port area via a dedicated Head Mounted Display (HMD) that records user location and movement.
2
Content available A method for the approximation of oil binder fall trajectory
Przywarty M., Muczyński B., Bilewski M.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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2018
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nr 53 (125)
43--47
EN
The following paper presents a novel method for approximating the fall trajectories of small, lightweight oil binders, used during oil spill clean-up operation at sea. Due to the weight, size and shape of the binders, the fall trajectory is highly dependent on the direction and strength of the wind, as well as the rotations and positions of individual binders when dropped. Since a large quantity of tightly packed binders are dropped at once, it is highly inconvenient to calculate the precise trajectory of each binder when its exact initial rotation and position inside the container are not known. The aim of this study is to predict the exact moment and position of the drop, as well as the oil binders’ spread, considering wind conditions, airplane velocity and height.
3
Content available A kinematic method for the assessment of the safe parameters of a waterway bend
Dzwonkowski J., Przywarty M., Bilewski M.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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2018
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nr 53 (125)
106--113
EN
This paper presents an original kinematic method for the assessment of the safe parameters of waterway bends. The proposed method has been based on the analysis of the results obtained through the use of the developed simulation model which allowed for the examination of all the physically available paths of a ship’s centre of gravity. The results of the simulation were divided into defined subsets that enabled the assessment of the safe parameters of waterway bends. This paper also presents the calculations that were carried out for the theoretical reference bend.
4
Content available Assessment of GNSS Position Integrity with the Use of Postprocessed EGNOS Data in the Area of Szczecin-Świnoujście Waterway
Bilewski M., Zalewski P.
Annual of Navigation
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2018
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No. 25
67--77
EN
GNSS measurements can be supplemented by the information available in EGNOS system even if one has only GNSS receiver that is not processing Satellite-Based Augmentation Systems data. The article describes how to obtain the variances of ranges to the satellites used for positioning when the final antenna position and satellites’ elevation and azimuths values are recorded. To verify how the resultant estimates of position error correspond to real errors the research based on GPS receiver was conducted.
PL
Pomiary GNSS mogą być wspomagane informacją dostępną w systemie EGNOS nawet, gdy wykorzystuje się odbiornik GNSS, który nie jest zdolny do przetwarzania danych z system SBAS. W artykule opisano, w jaki sposób można uzyskać informację o wariancji pomierzonych odległości do satelitów, jeśli znane są pozycja anteny oraz azymuty i wysokości satelitów ponad horyzontem. Dla zweryfikowania, w jakim stosunku pozostają estymowane błędy pozycji względem rzeczywistych błędów przedstawiono wyniki badań przeprowadzonych z użyciem odbiornika GPS.
5
Content available System for determining dynamic under keel clearance of vessels entering the Port of Swinoujscie (DRWPS)
Gucma L., Bilewski M., Artyszuk J., Drwięga K.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2017
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Vol. 11, no. 3
539--545
EN
The article presents a system for determining dynamic under keel clearance. In order to build a DRWPS system, a mixed model was created based on the analysis of math models. The system includes advisory software for defining the conditions for the entering of large LNG vessels in the context of under keel clearance and software was built to support the decision-making of operators who are responsible for introducing these vessels to the Port of Swinoujscie.
6
Content available Criteria of accidental damage by ships anchors of subsea gas pipeline in the Gdańsk bay area
Marcjan K., Dzikowski R., Bilewski M.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2017
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Vol. 11, no. 3
441--446
EN
This paper discusses issues of the accidental anchor damage to offshore subsea pipeline as one of the most significant threat to underwater infrastructure. The density of vessel traffic over the pipeline between platform Baltic Beta and Wladyslawowo power plant has been analyzed. In order to determine the most common damages associated with heavy ship traffic, the authors used the risk model for underwater infrastructure. For this purpose ships anchor equipment has been categorized and as the results the criteria of damage to the pipeline have been discussed.
7
Content available Assessing the impact of a targeted plyometric training on changes in selected kinematic parameters of the swimming start
Rejman M., Bilewski M., Szczepan S., Klarowicz A., Rudnik D., Maćkała K.
Acta of Bioengineering and Biomechanics
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2017
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Vol. 19, no. 2
149--160
EN
The aim of this study was to analyse changes taking place within selected kinematic parameters of the swimming start, after completing a six-week plyometric training, assuming that the take-off power training improve its effectiveness. Methods: The experiment included nine male swimmers. In the pre-test swimmers performed three starts focusing on the best performance. Next, a plyometrics training programme, adapted from sprint running was introduced aimed at increasing explosive power of the lower extremities; the programme entailed 75 minute sessions conducted twice a week. Afterwards, a post-test was performed, analogous to the pre-test. Spatio-temporal structure data of the swimming start were gathered from video recordings of the swimmer both above and under water. Results: Impulses triggered by the plyometric training contributed to a shorter start time (the main measure of start effectiveness) and glide time as well as increasing average take-off, flight and glide velocities including take-off, entry and glide instantaneous velocities; the glide angle decreased. Conclusions: The changes in selected parameters of the swimming start and its confirmed diagnostic values, showed the areas to be susceptible to plyometric training and suggested, that applied plyometric training programme aimed at increasing take-off power enhances the effectiveness of the swimming start.
8
Content available Application of ultrasonic distance sensors for measuring height as a tool in unmanned aerial vehicles with a stabilized position in the vertical plane
Bilewski M., Putynkowski G.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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2016
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nr 46 (118)
17--21
EN
The paper presents a review of ultrasonic sensors. Attention is focused on the possibility of using such sensors to keep an unmanned aerial vehicle at a constant altitude above the surface. Such a task requires filtered and unfiltered signals, so that the ground level can be distinguished even when obstacles are present. Three selected sensors were tested. The possibility of connecting these sensors to external devices was also studied. The potential of the individual sensors and of a set of sensors is discussed. The study showed that the best solution is to use a set of three ultrasonic sensors. Alternatively, a sensor with both unfiltered and filtered measurement was proved to be an adequate option.
9
Content available Application of Markov chains to a navigator visual attention model
Muczyński B., Gucma M., Bilewski M.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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2016
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nr 46 (118)
95--100
EN
This paper presents initial results from a series of eye-tracking experiments on a Full Mission Bridge simulator. The aim of this research was to develop a stochastic model of a navigator’s attention distribution during their navigational watch. Such model could be used as a tool for workload and usability studies for navigators and navigational equipment interfaces. A structure of the model is discussed together with the evaluation of Markov chains as a main modelling tool. Initial results are presented and discussed. It is suggested that 1st order Markov chains are not fully applicable for this problem. A combination of the 1st and higher-order Markov chains will be applied in the next stage of research.
10
Content available Conception of EGNOS Integrity Data Utilization in ENC Systems
Bilewski M., Zalewski P.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2016
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Vol. 10, no. 3
389--393
EN
The paper presents the processing of EGNOS integrity data received either directly from the satellite network or the Sisnet internet relay. Relationship between the individual frames in EGNOS messages has been described. Usefulness of these data was indicated by the three examples. In the first example data form EGNOS was used to compare integrity parameters and the calculated position error. In further examples the simulated position with error and calculated integrity parameters were implemented together. The results were presented in two ways: with use of dedicated program which presents only ship contours (the one not covering GNSS uncertainty and the one covering this uncertainty called Marine Vessel Protection Area) and as a layer in existing ECDIS.
11
Content available Construction and functionality of integrated interactive simulator for inland ship navigation
Bilewski M., Gucma M., Karkos D., Muczyński B., Woś K.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2014
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nr 37 (109)
22--27
EN
The following paper describes construction and functionality of the newly developed shiphandling simulator for the inland navigation (called InSim), that was constructed as a part of research project at Maritime University of Szczecin. Problems of construction process and simulator ergonomics were presented. Fidelity of the simulation with respect to real environment, as well as details of all subsystems were discussed.
12
Content available Using eye tracking data for evaluation and improvement of training process on ship’s navigational bridge simulator
Muczyński B., Gucma M., Bilewski M., Zalewski P.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2013
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nr 33 (105)
75--78
EN
The paper presents basics of the eye tracking methodology and results of preliminary test on multi-purpose marine ship’s navigation bridge simulator. The use of the eye-tracker on the navigation bridge makes it possible to objectively measure the ergonomics of the individual interfaces, as well as to evaluate the decision-making process itself, including the mental workload and stress. In the experiment, officers were faced with an unexpected and sudden situation leading to a collision. The simulated situation required the officer to act immediately and resolutely, taking into account all his/her knowledge about the ship, and interpreting the available data correctly. Outcome of this test was compared with gaze data and it was proved that experienced group with best results suffered lowest level of mental workload and was most efficient In decision making process. Based on those results a possibility of improving simulator training with the use of eye tracking data is discussed.
13
Content available Functionality of navigation systems interfaces in the integrated interactive simulator for inland ship navigation
Juszkiewicz W., Muczyński B., Gucma M., Bilewski M.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2013
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nr 35 (107)
47--51
EN
The following paper describes functionality of navigation systems interfaces in the newly developed shiphandling simulator for the inland navigation (called InSim) at Maritime University of Szczecin. It is based on analysis of radar interface and conning touch screen that has been designed for the simulator.
14
Content available Determination of the inland units models parameters for short-term prediction
Bilewski M., Gucma L., Puszcz A.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2013
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nr 36 (108) z. 1
32--37
EN
Short-term prediction is a tool that helps to manoeuvre inland units, allows assessing the effect of the planned manoeuvre and reduces the probability of collision. Model of ships hydrodynamics is required to perform this task. In the paper simple to implement solution based on a Nomoto model is proposed. Method of determi ning the parameters of the model was presented. Researches were carried out with use of INSim Inland Navigation Simulator.
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