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Search results for: SATELLITE NAVIGATION SYSTEMS

  • Degradation of Kinematic PPP of GNSS Stations in Central Europe Caused by Medium-Scale Traveling Ionospheric Disturbances During the St. Patrick’s Day 2015 Geomagnetic Storm

    Publication

    - Remote Sensing - Year 2020

    In solar cycle 24, the strongest geomagnetic storm took place on March 17, 2015, when the geomagnetic activity index was as high as -223 nT. To verify the impact that the storm had on the Global Navigation Satellite System (GNSS)’s positioning accuracy and precision, we used 30-s observations from 15 reference stations located in Central Europe. For each of them, we applied kinematic precise point positioning (PPP) using gLAB software...

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  • Paweł Szymon Dąbrowski dr inż.

    People

    Department of Geodesy

    Dr. Eng. Paweł Szymon Dąbrowski studied geodesy and cartography at the University of Warmia and Mazury in Olsztyn from 2004-2009, where he obtained the title of Master of Science in Engineering. In the years 2009-2016, he worked as a land surveyor in Iława and Gdańsk. He gained professional experience during the construction of the Pomeranian Metropolitan Railway, which helped him obtain a national surveying license in 2015. In...

  • Leszek Ziemczonek dr

    People

    University education 1973-1978 – Nicolaus Copernicus University in Toruń, University of Gdańsk in Gdańsk, Mathematical Physics, M. Sc. 1979 – Diploma of Postgraduate Studies, Pedagogics 1989 – Institute of Physics, Polish Academy of Sciences in Warsaw, Theoretical Physics, Ph. D. 2010-2012 – Diploma of Postgraduate Studies, Mathematics Training: ·         09.1983 – Trieste (Italy) – International Centre for Theoretical Physics...

  • Geodezja i nawigacja satelitarna w transporcie 2023/2024

    e-Learning Courses
    • D. Wróblewska

    Podstawowe pojęcia geodezji i nawigacji. Ziemia jako powierzchnia odniesienia dla pomiarów. Systemy odniesienia i współrzędnych stosowane w nawigacji i geodezji. Instrumenty geodezyjne przeznaczenie, funkcje i budowa. Geneza systemów geodezji i nawigacji satelitarnej. Ruch sztucznych satelitów Ziemi. Globalne Systemy Pozycyjne: GPS (Global Positioning System), GLONASS (GLObal NAvigation Satellite System), Galileo. Odbiorniki kodowe...

  • Concept of an Innovative System for Dimensioning and Predicting Changes in the Coastal Zone Topography Using UAVs and USVs (4DBatMap System)

    Publication

    - Electronics - Year 2023

    This publication is aimed at developing a concept of an innovative system for dimensioning and predicting changes in the coastal zone topography using Unmanned Aerial Vehicles (UAVs) and Unmanned Surface Vehicles (USVs). The 4DBatMap system will consist of four components: 1. Measurement data acquisition module. Bathymetric and photogrammetric measurements will be carried out with a specific frequency in the coastal zone using...

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  • System pozycjonowania dynamicznego morskich jednostek pływających jako system mechatroniczny

    Publication

    - Przegląd Mechaniczny - Year 2019

    W artykule przedstawiano system pozycjonowania dynamicznego półzanurzeniowej platformy wiertniczej, który jest rozpatrywany jako system mechatroniczny. W szczególności zaś zaprezentowano systemy referencyjne utrzymania stanowiska pozycyjnego na morzu, urządzenia nawigacyjne, czujniki ruchów własnych jednostki pływającej i anemometry rozważane jako czujniki systemu mechatronicznego oraz pędniki azymutalne rozważane jako nastawniki...

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  • Testing of Software for the Planning of a Linear Object GNSS Measurement Campaign under Simulated Conditions

    Publication

    - ENERGIES - Year 2021

    The precision of a linear object measurement using satellite techniques is determined by the number and the relative position of the visible satellites by the receiver. The status of the visible constellation is described by DOP. The obtained geometric coefficient values are dependent on many variables. When determining these values, field obstacles at the receiver location and satellite positions changing with time must be taken...

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  • A Method for Determination and Compensation of a Cant Influence in a Track Centerline Identification Using GNSS Methods and Inertial Measurement

    Publication

    - Applied Sciences-Basel - Year 2019

    At present, the problem of rail routes reconstruction in a global reference system is increasingly important. This issue is called Absolute Track Geometry, and its essence is the determination of the axis of railway tracks in the form of Cartesian coordinates of a global or local coordinate system. To obtain such a representation of the track centerline, the measurement methods are developed in many countries mostly by the using...

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  • Marek Przyborski dr hab. inż.

    People

    Marek Przyborski (b. March 20, 1964. Chełmża) - His fields of interest are remote sensing and close range photogrammetry. He conducts research on the use of so-called "high-speed cameras" to analyze the rapidly-changing phenomena. Co-author and author of publications dealing with the wide meaning of remote sensing applications related to the construction, transport, engineering, environment and homeland security. He is the author...

  • Efficient Usage of Dense GNSS Networks in Central Europe for the Visualization and Investigation of Ionospheric TEC Variations

    Publication

    - SENSORS - Year 2017

    The technique of the orthogonal projection of ionosphere electronic content variations for mapping total electron content (TEC) allows us to visualize ionospheric irregularities. For the reconstruction of global ionospheric characteristics, numerous global navigation satellite system (GNSS) receivers located in different regions of the Earth are used as sensors. We used dense GNSS networks in central Europe to detect and investigate...

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  • Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

    Publication

    - SENSORS - Year 2020

    The article discusses an important issue in connection with the technique of mobile Global Navigation Satellite System (GNSS) measurements of railway track coordinates, which is digital filtering performed to precisely determine railway track axes. For this purpose, a measuring technique is proposed which bases on the use of a measuring platform with a number of appropriately distributed GNSS receivers, where two of them determine...

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  • Assessment of Adjustment of GNSS Railway Measurements with Parameter-Binding Conditions in a Stationary Scenario

    Publication

    - Applied Sciences-Basel - Year 2022

    The study aims to assess the applicability of the ordinary least squares method, robust estimation, and conditions-binded adjustment in processing the six synchronous coordinate pairs of global navigation satellite system (GNSS) receivers. The research is part of the research project InnoSatTrack, focused on the enhancement of the determination of geometrical parameters of railway tracks using GNSS, inertial, and other sensors....

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  • Ochrona odbiorników GNSS przed zakłóceniami celowymi

    Publication

    - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2017

    Artykuł dotyczy zastosowania algorytmów przestrzennego cyfrowego przetwarzania sygnałów dla potrzeb selektywnej eliminacji sygnałów zakłócających pracę odbiorników nawigacji satelitarnej GNSS. Omówiono podatność tych odbiorników na ataki elektroniczne typu zagłuszanie oraz spoofing. Polegają one na celowej emisji sygnałów niepożądanych w paśmie pracy systemu. Następnie przedstawiono koncepcję przeciwdziałania tego rodzaju zakłóceniom...

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  • High precision and accuracy using low cost GNSS receivers and supporting technologies

    Publication

    - Year 2017

    This chapter focuses on methods and techniques of positioning, based on the highly accurate and precise Global Navigation Satellite System (GNSS), which are available at a relatively low price. In this context, a comparison of different positioning methods provided by the free and open source software (FOSS) package called RTKLIB is given. Other aspects related to price reduction are also considered, including availability and...

  • Evaluation of Street Lighting Efficiency Using a Mobile Measurement System

    Publication

    - ENERGIES - Year 2021

    The issue concerns the initial stage of work on a method for performing a rapid assessment of the energy efficiency and illuminance of a street lighting installation. The proposed method is based on simultaneous measurement of illuminance from three lux meters placed on the roof of the vehicle. The data are acquired in road traffic, while the vehicle is driving. The proposed solution will allow in the future to quickly and reproducibly...

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  • JOURNAL OF NAVIGATION

    Journals

    ISSN: 0373-4633 , eISSN: 1469-7785

  • Assessment of performance of unmanned maritime vehicles (USV, UUV, AUV) by CFD and MES investigation, PG_00053662

    e-Learning Courses
    • M. K. Gerigk

    The course entitled "Assessment of Performance of Unmanned Maritime Vehicles" consists of the following problems to be discussed during the lectures (W): - major areas of application of UMV unmanned maritime vehicles, - sea environment, - types of UMV vehicles, - parameters, characteristics and features of UMV vehicles, - research, design, construction, implementation and operation of  UMV vehicles, - systems of UMV vehicles...

  • Integration Data Model of the Bathymetric Monitoring System for Shallow Waterbodies Using UAV and USV Platforms

    Publication
    • O. Lewicka
    • M. Specht
    • A. Stateczny
    • C. Specht
    • G. Dardanelli
    • D. Brčić
    • B. Szostak
    • A. Halicki
    • M. Stateczny
    • S. Widźgowski

    - Remote Sensing - Year 2022

    Changes in the seafloor relief are particularly noticeable in shallow waterbodies (at depths up to several metres), where they are of significance for human safety and environmental protection, as well as for which the highest measurement accuracy is required. The aim of this publication is to present the integration data model of the bathymetric monitoring system for shallow waterbodies using Unmanned Aerial Vehicles (UAV) and...

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  • Architektura latarni morskich wczoraj i dziś

    Publication

    - Logistyka - Year 2015

    Latarnie morskie jako znaki nawigacyjne są niezwykle interesującymi obiektami architektonicznymi. Smukłe formy wynikające z ich funkcji oraz specyficzna lokalizacja sprawiają, że są one charakterystycznymi punktami w krajobrazie nadmorskim. Identyfikują go wizualnie i stają się magnesem przyciągającym turystów. Latarnie morskie, jak wszystkie obiekty korzystające z rozwoju budownictwa i techniki zmieniały swoją formę, nie zmieniając...

  • Improved Empirical Coefficients for Estimating Water Vapor Weighted Mean Temperature over Europe for GNSS Applications

    Publication

    - Remote Sensing - Year 2019

    Development of the so-called global navigation satellite system (GNSS) meteorology is based on the possibility of determining a precipitable water vapor (PWV) from a GNSS zenith wet delay (ZWD). Conversion of ZWD to the PWV requires application of water vapor weighted mean temperature (Tm) measurements, which can be done using a surface temperature (Ts) and its linear dependency to the Tm. In this study we analyzed up to 24 years...

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  • Interannual Variability of the GNSS Precipitable Water Vapor in the Global Tropics

    Publication

    - Atmosphere - Year 2021

    This paper addresses the subject of inter-annual variability of the tropical precipitable water vapor (PWV) derived from 18 years of global navigation satellite system (GNSS) observations. Non-linear trends of retrieved GNSS PWV were investigated using the singular spectrum analysis (SSA) along with various climate indices. For most of the analyzed stations (~49%) the GNSS PWV anomaly was related to the El Niño Southern Oscillation...

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  • Badanie i analiza efektywności pracy naziemnego, samoorganizującego się systemu radiolokalizacyjnego

    Publication

    - Year 2017

    Jak wiadomo, klasyczne systemy hiperboliczne posiadają strukturę łańcuchową, i pracują w trybie synchronicznym. Taka hierarchiczna struktura tradycyjnych systemów hiperbolicznych, zwłaszcza zaś wymóg zapewnienia synchronicznej pracy łańcucha stacji stanowi istotne utrudnienie jego pracy. Poza tym uszkodzenie stacji głównej skutkuje wyłączeniem z eksploatacji całości łańcucha i tym samym pozbawia dostępu do usługi radiolokalizacyjnej...

  • Determining the Seasonal Variability of the Territorial Sea Baseline in Poland (2018–2020) Using Integrated USV/GNSS/SBES Measurements

    Publication
    • M. Specht
    • C. Specht
    • A. Stateczny
    • Ł. Marchel
    • O. Lewicka
    • M. Paliszewska-Mojsiuk
    • M. Wiśniewska

    - ENERGIES - Year 2021

    The Territorial Sea Baseline (TSB) allows coastal states to define the maritime boundaries, such as: contiguous zone, continental shelf, exclusive economic zone and territorial sea. Their delimitations determine what rights (jurisdiction and sovereignty) a given coastal state is entitled to. For many years, the problem of delimiting baseline was considered in two aspects: legal (lack of clear-cut regulations and different interpretations)...

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  • Sensors and System for Vehicle Navigation

    Publication

    - SENSORS - Year 2022

    In recent years, vehicle navigation, in particular autonomous navigation, has been at the center of several major developments, both in civilian and defense applications. New technologies, such as multisensory data fusion, big data processing, or deep learning, are changing the quality of areas of applications, improving the sensors and systems used. Recently, the influence of artificial intelligence on sensor data processing and...

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  • 2022-2023 - Assessment of performance of unmanned maritime vehicles (USV, UUV, AUV) by CFD and MES investigation, PG_00053662

    e-Learning Courses
    • M. K. Gerigk

    The course entitled "APofUMV Assessment of Performance of Unmanned Maritime Vehicles (W-lecture) is mainly conducted  for the DAPE Course Students. The lectures (W) are closely connected with the project exercises (P) where some examples for the data designs are conducted. All the AP of UMV lectures are connected with presentation following problems: - major areas of application of UMV unmanned maritime vehicles, - sea environment...

  • Zdzisław Kowalczuk prof. dr hab. inż.

    People

    Department of Decision Systems and Robotics

    Zdzislaw Kowalczuk received his M.Sc. degree in 1978 and Ph.D. degree in 1986, both in Automatic Control from Technical University of Gdańsk (TUG), Gdańsk, Poland. In 1993 he received his D.Sc. degree (Dr Habilitus) in Automatic Control from Silesian Technical University, Gliwice, Poland, and the title of Professor from the President of Poland in 2003. Since 1978 he has been with Faculty of Electronics, Telecommunications and Informatics...

  • Shoreline Extraction Based on LiDAR Data Obtained Using an USV

    Publication

    - TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation - Year 2023

    This article explores the use of Light Detection And Ranging (LiDAR) derived point clouds to extract the shoreline of the Lake Kłodno (Poland), based on their geometry properties. The data collection was performed using the Velodyne VLP‐16 laser scanner, which was mounted on the HydroDron Unmanned Surface Vehicle (USV). A modified version of the shoreline extraction method proposed by Xu et al. was employed, comprising of the following...

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  • Detecting Apples in the Wild: Potential for Harvest Quantity Estimation

    Publication
    • A. Janowski
    • R. Kaźmierczak
    • C. Kowalczyk
    • J. Szulwic

    - Sustainability - Year 2021

    Knowing the exact number of fruits and trees helps farmers to make better decisions in their orchard production management. The current practice of crop estimation practice often involves manual counting of fruits (before harvesting), which is an extremely time-consuming and costly process. Additionally, this is not practicable for large orchards. Thanks to the changes that have taken place in recent years in the field of image...

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  • CYBERNETICS AND SYSTEMS

    Journals

    ISSN: 0196-9722 , eISSN: 1087-6553

  • AI in the creation of the satellite maps

    Publication

    - Year 2015

    Satellite and aerial imagery acquisition is a very useful source of information for remote monitoring of the Earth’s surface. Modern satellite and aerial systems provide data about the details of the site topography, its characteristics due to different criteria (type of terrain, vegetation cover, soil type and moisture content), or even information about emergency situations or disasters. The paper proposes and discusses the process...

  • Velocity measurement using the fdoa method in ground-based radio navigation system

    Publication

    - Metrology and Measurement Systems - Year 2014

    Velocity is one of the main navigation parameters of the moving objects. However some systems of position estimation using radio wave measurements cannot provide velocity data due to limitation of their performance. In this paper a velocity measurement method for DS-CDMA radio navigation system is proposed, which doesn’t require full synchronization of reference stations carrier frequencies. The article presents basics of FDOA...

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  • Zastosowanie mobilnych pomiarów satelitarnych w projektowaniu i eksploatacji dróg szynowych

    Publication

    - Problemy Kolejnictwa - Year 2015

    W artykule przedstawiono podsumowanie kilkuletnich badań nad zastosowaniem mobilnych pomiarów satelitarnych w projektowaniu i eksploatacji dróg szynowych. Mobilne pomiary satelitarne polegają na objeździe trasy pojazdem szynowym z doczepionymi wagonami-platformami lub wózkami dwuosiowymi, na których zostały zainstalowane odbiorniki GNSS (ang. Global Navigation Satellite System). Opisano przyjętą metodykę badawczą oraz przebieg...

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  • GNSS reference solution for permanent sition stability monitoring and geodynamical investigations - the ASG-EUPOS case study

    Publication

    - Acta Geodynamica et Geomaterialia - Year 2013

    The aim of this paper is to present the strategy of determination of the reference solution for the ASG-EUPOS (ActiveGeodetic Network – European Position Determination System) coordinate monitoring system. ASG-EUPOS is a network of permanent GNSS (Global Navigation Satellite System) stations controlled by the Polish Head Office of Geodesy and Cartography (HOGC), which main role is to realize the ETRS89 (European Terrestrial Reference...

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  • The Journal of Polish Navigational Forum

    Journals

    ISSN: 1640-8632 , eISSN: 2300-6633

  • Hourly GNSS-derived integrated moisture in the global tropics for the years 2001-2018

    Open Research Data
    open access

    Global tropics are essential in formulating weather patterns and climate across various latitudes through atmospheric teleconnections. Since water vapour is an essential parameter in atmospheric convection and, thus, latent heat release, its tropical variability on different time scales is crucial in understanding weather and climate changes. The provided...

  • Satellite pump and motor

    Publication

    - Mechines Technologies Materials - Year 2014

    The article describe the design and operation of a prototype of satellite pump and a prototype of satellite motor. In both machines, the operating mechanism consists of a non-circular gear with external teeth (rotor), non-circular gear with internal teeth (curvature), and ten gear wheels which cooperate with the rotor and the curvature. The differences between the commutation unit in the pump and the commutation unit in the motor...

  • ASSESSMENT of PERFORMANCE of UMV (2024)

    e-Learning Courses
    • M. K. Gerigk

    (W) Assessment of Performance of Unmanned Maritime Vehicles (W-Lecture) - DAPE - WIMiO AP-of-UMV (W) -DAPE - WIMiO   The course entitled "Assessment of Performance of Unmanned Maritime Vehicles (W-Lecture)" is conducted for the DAPE WIMiO Students.   The AP-of-UMV (W) course is to discuss the following problems: - major areas of application of UMV unmanned maritime vehicles, - sea environment, - types of UMV vehicles, -...

  • A method of selecting light sources from night satellite scenes

    Publication

    - Year 2015

    Satellite images carries a lot of data. Very sophisticated methods of analyses may reveal very complicated nature of the observed objects. In case of night images, lights play the role of information sources. In this paper we would like to present results of the research aimed to describe light sources from satellite night images by providing description of their luminosity. The authors point source imaging data from the satellite...

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  • Remote Spatial Database Access in the Navigation System for the Blind

    Publication

    - Year 2013

    The article presents the problem of a database access in the navigation systems. The authors were among the main creators of the prototype navigation system for the blind - “Voice Maps”. In the implemented prototype only exemplary, limited spatial data were used, therefore they could be stored in the mobile device’s memory without any difficulties. Currently the aforementioned system is being prepared for commercialization - the...

  • Underwater Navigation System Based on Doppler Shifts of a Continuous Wave

    Publication

    - Year 2018

    The paper describes a concept of an underwater navigation system designed to determine the location and speed of its ROVs or divers. Conducted by the Department of Marine Electronic Systems at the Gdansk University of Technology for several years, research has focused on navigation systems which determine positions on the basis of Doppler shifts of echo signals reflected from a moving object. This article presents a different version...

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  • Distributed Evolutionary Algorithm for Path Planning in Navigation Situation

    Publication

    - TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation - Year 2013

    This article presents the use of a multi-population distributed evolutionary algorithm for path planning in navigation situation. The algorithm used is with partially exchanged population and migration between independently evolving populations. In this paper a comparison between a multi-population and a classic single-population algorithm takes place. The impact on the ultimate solution has been researched. It was shown that using...

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  • Client-server Approach in the Navigation System for the Blind

    Publication

    - TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation - Year 2013

    The article presents the client‐server approach in the navigation system for the blind ‐ “Voice Maps”. The authors were among the main creators of the prototype and currently the commercialization phase is being finished. In the implemented prototype only exemplary, limited spatial data were used, therefore they could be stored and analysed (for path-finding process) in the mobile device’s memory without any difficulties. The...

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  • Has EGNOS its own place in maritime navigation?

    Publication

    - Year 2015

    GNSS (in fact it usually means GPS) is at the moment the fundamental means of positioning for any variants of navigation. However some attributes of it can be not sufficient for every users or in some tasks, so there are any cases when this system needs support. From the mariner point of view pure GPS properties perfectly fulfils expectations of sailors at the open sea, however there are lot of cases, when accuracy of the system...

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  • Multidimensional GIS for satellite imagery analysis

    Publication

    - HYDROACOUSTICS - Year 2017

    Multidimensional Geographical Information System allows storing, querying and processing of multidimensional query data. It is able to process satellite imagery and provide tools for its analysis. In the article authors present the developed system that analyzes a time series of SENTINEL - 1 mission satellite imagery acquired over the coast of Poland. The algorithm used finds and detects changes in the shape...

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  • Remote Sensing in Vessel Detection and Navigation

    Publication

    - SENSORS - Year 2020

    The Special Issue (SI) “Remote Sensing in Vessel Detection and Navigation” highlighted a variety of topics related to remote sensing with navigational sensors. The sequence of articles included in this Special Issue is in line with the latest scientific trends. The latest developments in science, including artificial intelligence, were used. The 15 papers (from 23 submitted) were published.

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  • Integration of inertial sensors and GPS system data for the personal navigation in urban area

    Publication

    - Year 2013

    GPS and Inertial Navigation Systems (INS) have complementary properties and they are therefore well suited for integration. The integrated solution offers better long-term accuracy than a stand-alone INS and better integrity, availability and continuity or a stand-alone GPS receiver, making it suitable for demanding applications. The complementary features of INS and GPS are the main reasons why integrated GPS/INS systems are becoming...

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  • TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation

    Journals

    ISSN: 2083-6473 , eISSN: 2083-6481

  • New satellite pumps

    Publication

    - Year 2012

    Stosowanie Maszyn company from Katowice was initiator and originator of newest original high pressure satellite pumps series of types PSM. Construction solution, research and development of these pumps have been conducted by Team of Hydraulics and Pneumatics of Gdansk University of Technology in cooperation with this company within the confines of research project nr R0300103 (source of funds: Ministry of Science and Higher Education)....

  • Compact satellite hydraulic unit

    Publication

    - Mechines Technologies Materials - Year 2014

    The article describes the design and operation of a prototype hydraulic unit. It is based on an inversed kinematics, satellite pump in which the body rotates around the shaft. The pump is placed inside the electric motor. Thanks to that the compact and low mass construction was achieved. Thanks to new commutation unit with enlarged channels, lower pressure losses were obtained. The article presents the construction and results...

  • Autonomous Vehicle Navigation in Dense Urban Area in Global Positioning Context

    Publication

    - HUMAN SYSTEMS MANAGEMENT - Year 2018

    Autonoumous vehicle services are likely to be adopted in dense urban area. Some research prove that autonomous transport might be capable of improving the transport needs of few times and as a consequence sustainability, congestion and safety may be improved. The world, hopefully is close to a transport revolution age. These studies are perhaps exaggerated, over-optimistic and far fro fully operational. The paper takes into account...

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