Tytuł: Analytical - diffraction model of V-band propagation for the Radiocommunication Events Management System (REMS)

Autor/Autorzy: Marcin Mąka, Piotr Majzner

Miejsce publikacji: Annual of Navigation, vol. 26, no. 1, pp. 127-135

Rok: 2019

Słowa kluczowe: radiocommunication, Radiocommunication Events Management System, GMDSS, propagation

Abstrakt: The paper presents an analytical-diffraction propagation model for the needs of the Radiocommunication Events Management System, for coast and ship radio stations in sea area A1. The V-wave propagation in sea area 1 has been analyzed as part of an analysis of ranges of particular radio stations and their ability to establish radio contact. The theoretical basis and assumptions on which the model structure design process is based have been presented. Methods of modelling and presentation of dislocation of particular radio stations and their ranges have been discussed.

Tytuł: Propagation models for the Radiocommunication Event Management System (REMS) in the V-band

Autor/Autorzy: Marcin Mąka, Piotr Majzner

Miejsce publikacji: Scientific Journals of the Maritime University of Szczecin-Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol. 58, no. 130, pp. 55-60

Rok: 2019

Słowa kluczowe: radiocommunication, Radiocommunication Events Management System (REMS), Global Maritime Distress and Safety System (GMDSS, propagation, ranges of v-band

Abstrakt: This paper presents an analytical method for determining marine VHF communication bands based on the propagation model included in the International Telecommunication Union (ITU) recommendations. The developed method to determine communication bands was compared with the model recommended by the International Maritime Organization (IMO). The usefulness of the method developed by the authors has been demonstrated for the needs of the Radiocommunication Events Management System (REMS)

Tytuł monografii: Development of Transport by Telematics

Tytuł rozdziału monografii: AIS Data Acquisition for Intelligent System for Obtaining Statistics

Autor/Autorzy: Mariusz Dramski, Marcin Mąka

Rok: 2019

Słowa kluczowe: AIS, data mining, intelligent systms, intelligent statistics

Abstrakt: In this paper the AIS data acquisition procedure for intelligent system for obtaining statistics is described. During this procedure several problems occurred and the way to solve them is presented. The aim of such data acquisition is to prepare them for an intelligent system which can be applied by different institutions responsible for creating the transport politics in Poland. This paper is also the introduction to the new project realized by the Maritime University of Szczecin with other cooperating institutions.

ISBN: 978-3-030-27546-4

Tytuł monografii: Marine Navigation

Tytuł rozdziału monografii: Route optimization in the restricted area taking into account ship safety zones

Autor/Autorzy: Mirosław Wielgosz, Marcin Mąka

Rok: 2017

Słowa kluczowe: optymization, restricted area, safety zones

Abstrakt: The article presents a method of ship’s route planning and route optimization to be used for passage planning and monitoring, including plan changes resulting from unpredictable developments like newly charted dangers. A method of space discretization for seeking a safe and optimal track using the method of trapezoidal mesh is presented. The authors have implemented a model of hydrographic ship domain, crucial in the process of maintaining a safe distance from the safety contour, navigational dangers and special areas. The model takes into account basic technical parameters of the ship, such as size and speed, and is capable of incorporating other factors. The article also discusses the method used to implement algorithms. A research experiment was conducted to verify the method. The final results and an example of method application are presented along with future directions of research work.

ISBN: 978-1-138-29762-3

Tytuł: Analiza opóźnień samolotów pasażerskich z wykorzystaniem reguł asocjacynych

Autor/Autorzy: Mariusz Dramski, Marcin Mąka

Miejsce publikacji: Autobusy. Technika, Eksploatacja, Systemy Transportowe, vol. 226, no. 12, pp. 755-757

Rok: 2018

Słowa kluczowe: associacion rules, filght’s delays, air transport

Abstrakt: Wydajność transportu pasażerskiego w tym lotnictwa cywilnego, jest kluczowa dla światowej gospodarki. Jednym z głównych czynników oceny linii lotniczych przez pasażerów jest punktualność. Należy tu uwzględnić również fakt, iż siec połączeń miedzy lotniskami na całym świecie jest niezwykle skomplikowana.

Tytuł: Propozycja algorytmu wykrywania zmian kursu i prędkości śledzonego obiektu

Autor/Autorzy: Marcin Mąka, Mariusz Dramski

Miejsce publikacji: Autobusy. Technika, Eksploatacja, Systemy Transportowe, vol. 226, no. 12, pp. 783-786

Rok: 2018

Słowa kluczowe: wykrywanie manewru, predykcja, obszar ograniczony

Abstrakt: Proces wyboru drogi w obszarze ograniczonym wymaga znajomości nie tylko samego obszaru, ale także bieżącego oraz przyszłego położenia innych poruszających się w nim obiektów. Zadanie to jest stosunkowo proste w przypadku gdy śledzone obiekty nie zmieniają kierunku ruchu oraz prędkości.

Tytuł: Radiocommunication event allocation model for a selected sea area

Autor/Autorzy: Marcin Mąka, Piotr Majzner, Andrzej Lisaj

Miejsce publikacji: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol. 50, no. 122, pp. 52-58

Rok: 2017

Słowa kluczowe: radiocommunication, GMDSS, allocation model

Abstrakt: This article presents the structure of a model of the allocation of radiocommunication events at coastal radio stations, land-based satellite stations and on vessels in sea area A3. The propagation of radio waves in the HF band has been analyzed to examine the range of various radio stations and their capabilities of establishing communication between each other. We also present methods of modeling and displaying the deployment of individual stations, of presenting radiocommunication events as a function of time using time diagrams, as well as the manner of the chronological presentation of radiocommunication events and related decisions. It has been shown that there is a relationship between the effectiveness of communication and propagation conditions that is strongly dependent on the time-of-day. We present the need to develop a decision support system for the radio operator on the bridge.

Tytuł: The radio operator decision support system model

Autor/Autorzy: Marcin Mąka, Piotr Majzner

Miejsce publikacji: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol. 52, no. 124, pp. 120-127

Rok: 2017

Słowa kluczowe: decision model, GMDSS, radiocommunication, signals, graph theory

Abstrakt: The article proposes a model of the system supporting the decision-making process relating to the radio operator on board a ship after a distress alert is received by a Digital Selective Calling (DSC) controller working on VHF channel 70. The model is aimed at the implementation into the system of radiocommunication event management. The system takes into account the existing Radio Regulations. The model makes use of Petri nets, which are elements of graph theory. The time domain is comprised in the developed graph, and the states (places) and transitions capable of autonomous functioning are separated, as are those places and transitions requiring direct operator action based on empirical knowledge.