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1
Content available Multidimensional GIS for satellite imagery analysis
Drypczewski K., Markiewicz Ł., Stepnowski A.
Hydroacoustics
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2017
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Vol. 20
41--50
EN
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 of the coastline over a long period of time. The system uses a Raster Data Manager array database management system to simplify the process of data querying, trimming, storing and analysing. Authors present how the recent trends in GIS development, like RASDAMAN, can be applied to satellite imagery processing.
2
Content available remote Design, measurement and analysis of gyro-azimuths influence on the results of aligning the underground control network
Szafarczyk A., Młynarczyk J., Markiewicz Ł., Gawałkiewicz R.
Geoinformatica Polonica
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2017
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T. 16
77--86
EN
The article discusses the impact of additionally measured gyroazimuths on the accuracy of the underground network. It discusses such issues as: the way of gyroazimuth measurement, corrections introduced into the measured gyroazimuth, effects of centering the instrument and signal and effects of side lengths for accuracy of gyroazimuth measurement, the legal basis for such measurement in mining excavations and design quantities and location of gyroazimuth measurement in the underground network to obtain its better accuracy. These theoretical arguments have been illustrated on the example of gyroazimuths measurement on the fi ve sides of the existing underground network mainly focused on increasing its accuracy parameters by this additional measurement.
PL
W artykule poruszono problematykę wpływu dodatkowo pomierzonych giroazymutów na dokładność osnowy podziemnej. Omówiono w nim takie zagadnienia jak: sposób pomiaru giroazimutu, poprawki wprowadzane do pomierzonych giroazymutów, wpływ ekscentrów stanowiska instrumentu i sygnału oraz długości boku na dokładność pomiaru giroazymutu, podstawy prawne takiego pomiaru w wyrobiskach górniczych oraz sposób projektowania ilości i miejsca pomiaru giroazymutu w sieci dołowej pozwalający uzyskać podwyższenie dokładności sieci dołowej. Podstawy teoretyczne zilustrowane zostały przykładem z pomiaru giroazymutów na pięciu bokach istniejącej sieci dołowej głównie pod kątem uzyskanego podwyższenia tym dodatkowym pomiarem jej parametrów dokładnościowych.
3
Content available Coastline change-detection method using remote sensing satellite observation data
Markiewicz Ł., Mazurek P., Chybicki A.
Hydroacoustics
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2016
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Vol. 19
277—284
EN
Coastal zones are not only the fundaments for local economics based on trade, shipping and transport services, but also a source of food, energy, and resources. Apart from offering diverse opportunities for recreation and tourism, coastal zones provide protection against storms and other meteorological disturbances. Environmental information is also essential because of the direct influence on a country’s maritime zones, which are territorial sea and exclusive economic zones. Keeping local communities and ecosystems healthy requires monitoring and assessing of all the vital changes of territorial sea and its baseline. The paper presents a method and a concept of a system that provides an efficient means of automatic analysis of spatial data provided by satellite observation systems (optical Landsat 8 and SAR Sentinel 1) in order to monitor, and detect, changes in the coastline. The proposed methodology is based on a set of algorithms that enable one to trace and detect changes in coastline shape, and eventual damage to marine infrastructure, such as breakwaters and harbours, relying on high resolution satellite observational products.
4
Content available Coastal zone monitoring using SENTINEL-1 SAR polarimetry data
Chybicki A., Markiewicz Ł.
Hydroacoustics
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2015
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Vol. 18
25--32
EN
In recent years the role of the surveillance and security of Polish boundaries has significantly increased. Polish coastal zone monitoring requires various approaches using various technological means in order to ensure the protection of Polish boundaries. In this paper, the authors discuss and present alternatives to underwater surveillance methods of coastal area analysis and monitoring using data retrieved from the newly developed and operational Synthetic Aperture Radar (SAR) Sentinel-1 (ESA S-1) satellite. The authors discuss whether the proposed data source is a valid and reliable source of data that can be utilized in the current Polish coastline monitoring strategy and increase the safety of the country. A description of the various parameters concerning the data for the sea surface, sea objects and technical infrastructure are also discussed and presented.
5
Content available Client-server Approach in the Navigation System for the Blind
Markiewicz Ł., Drypczewski K., Wiśniewski B., Kamiński Ł.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2013
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Vol. 7, no. 3
395--400
EN
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 analyzed (for pathfinding process) in the mobile device’s memory without any difficulties. The resulting increase of spatial data scale and complexity required a modification of the data storage and operation. Consequently, the decision was made to maintain a central spatial database, which is accessed remotely. After that modification, the mobile application fetches the required batch of spatial data (with the pathfinding and search results) from the central server through the mobile internet connection, which has also become necessary for other purposes (e.g. voice recognition). The authors present the advantages and disadvantages of this new approach along with the results of the server operational tests.
6
Content available Methods of navigation in the mobile application supporting movement of the blind
Wiśniewski B., Drypczewski K., Markiewicz Ł., Kamiński Ł.
Hydroacoustics
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2013
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Vol. 16
243--252
EN
This paper presents conclusions from the last development phase of the “Voice Maps” project. Authors specify newly found available options for navigation in affordable system for the blind with all their related aspects. System uses dedicated geographical data, built-in smartphone GPS receivers and DGPS external device in order to assist blind users in their everyday travelling. Authors also discuss new methods to improve positioning accuracy and navigation reliability (map matching and remote pathfinding) along with interface modules for the blind.
7
Content available Voice maps - system supporting navigation of the blind
Kamiński Ł., Stepnowski A., Markiewicz Ł.
Hydroacoustics
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2012
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Vol. 15
83-90
EN
Improving comfort of life of blind people is a problem of great importance. Neither a white cane nor a guide dog, although both very useful, can be considered as a navigation tool, as they provide only a slight increase of independence in everyday movement around the city. On the market there are some navigation tools inspired by car navigation systems, but they have many flaws, ranging from positioning inaccuracies to high prices. A novel solution is presented in the article - a prototype application for casual smartphones. It utilizes electrocompass, built-in GPS receiver and optional DGPS receiver, which ensures acceptable accuracy. Main spatial data source is the popular OpenStreetMap system. Extra batch of spatial data can be added by users or community. Software part of the system guides users to desired target, using speech synthesis.
8
Content available Rozwój technologii i urządzeń do oczyszczania wody na bazie osiągnięć naukowo- technicznych Wojskowego Instytutu Techniki Inżynieryjnej
Mazurczuk R., Kwak A., Szyszka K., Maliszewski W., Markiewicz Ł.
Problemy Techniki Uzbrojenia
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2011
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R. 40, z. 117
29--36
PL
W artykule przedstawiono osiągnięcia WITI w zakresie wdrażania technologii uzdatniania wód powierzchniowych i rozwiązań technicznych stosowanych w wojskowych filtrach i stacjach oczyszczania wody. Pokazano typoszeregi filtrów małych, średnich i dużych oraz ich kolejnych modernizacji. W rozdziale „Opracowanie metody usuwania z wody radionuklidów i zastosowanie jej w wojskowych filtrach oczyszczania wody” przedstawiono w skrócie źródła możliwych skażeń promieniotwórczych wody, przydatność typowych procesów oczyszczania wody stosowanych w warunkach polowych do usuwania z niej radionuklidów, wady dotychczas stosowanych technologii oraz zasadę opracowanej metody oczyszczania wody z substancji promieniotwórczych i zastosowanie jej w nowych filtrach wojskowych. W referacie przedstawiono również możliwości wdrożenia technik membranowych do budowy wojskowych filtrów uzdatniania wody z wyszczególnieniem ich wad i zalet oraz zasygnalizowano rozpoczęcie prac o tej tematyce w Wojskowym Instytucie Techniki Inżynieryjnej.
EN
The paper presents projects accomplished by Military Institute of Engineer Technology (WITI) in the area of surface water treatment and technological solutions applied in military water treatment equipment and military water treatment stations. The division of the equipment into those of low-, medium- and high output is given, as is the course of their subsequent upgrades. In the chapter entitled “Development and implementation of the method of removing radionuclides out of water in military water treatment stations” what can be found is a concise description of the possible radioactive contamination sources in water and the applicability of conventionally used field water treatment processes in case of radionuclide removal. The drawbacks of the contemporary technologies are included as well. Described in detail is the newly-developed method of removing radioactive contaminations from water and the application of this method in new military water purifiers is given. The paper also addresses the issue of introducing membrane technologies into the structure of military water treatment equipment and water treatment stations, presenting the advantages and drawbacks of this solution. Additionally, initiation of work on the subject in WITI is indicated.
9
Content available remote Z GPS-em w Tatry
Ciejka A, Markiewicz Ł.
Geodeta : magazyn geoinformacyjny
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2003
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nr 4
26--28
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