Application of Least Squares with Conditional Equations Method for Railway Track Inventory Using GNSS Observations

K. Czaplewski, Z. Wiśniewski, A. Wilk , W. Koc , K. Karwowski , J. Skibicki , P. Dąbrowski, B. Czaplewski , M. Specht, P. Chrostowski , J. Szmagliński , S. Judek , S. Grulkowski , R. Licow , C. Specht SENSORS – 2020
Satellite geodetic networks are commonly used in surveying tasks, but they can also be used in mobile surveys. Mobile satellite surveys can be used for trackage inventory, diagnostics and design. The combination of modern technological solutions with the adaptation of research methods known in other fields of science offers an opportunity to acquire highly accurate solutions for railway track inventory. This article presents the effects of work carried out using a mobile surveying platform on which Global Navigation Satellite System (GNSS) receivers were mounted. The satellite observations (surveys) obtained were aligned using one of the methods known from classical land surveying. The records obtained during the surveying campaign on a 246th km railway track section were subjected to alignment. This article provides a description of the surveying campaign necessary to obtain measurement data and a theoretical description of the method employed to align observation results as well as their visualisation.

Stanowisko wizualizacji zdarzeń w systemie STRADAR – realizacja i funkcje dla operatora

It is crucial for the Border Guard to be equipped with a communication-teleinformatic infrastructure designed to support them in efficient realization of their operational tasks. STRADAR – a system which results are presented in this paper – is such an infrastructure. It is a distributed solution for the maritime division of the border guard. The system, with the use of a network of sensors located in both stationary and mobile points collects, archives and processes information and multimedia data, which can be made available to the staff on their demand. STRADAR consists of a number of functional elements. The paper includes a detailed description of one of them. This element being Event Visualization Post EVP, which utilizes multidisplay set up in the Centrum, to display multimedia presentation of information and data for both archival and current situations.

An Improved Convolutional Neural Network for Steganalysis in the Scenario of Reuse of the Stego-Key

B. Czaplewski – 2019
The topic of this paper is the use of deep learning techniques, more specifically convolutional neural networks, for steganalysis of digital images. The steganalysis scenario of the repeated use of the stego-key is considered. Firstly, a study of the influence of the depth and width of the convolution layers on the effectiveness of classification was conducted. Next, a study on the influence of depth and width of fully connected layers on the effectiveness of classification was conducted. Based on the conclusions from the studies, an improved convolutional neural network was created, which is characterized by the state-of-art level of classification efficiency but containing 20 times less parameters to learn during the training process. Smaller number of learnable parameters results in faster network learning, easier convergence, and smaller memory and computing power requirements. The paper contains description of the current state of art, description of the experimental environment, structures of the studied networks and the results of classification accuracy.

Multimedialny system nadzoru dla straży granicznej – projekt STRADAR

STRADAR jest systemem nadzoru przeznaczonym do wspierania działań operacyjnych morskiej straży granicznej, umożliwiającym zbieranie, przetwarzanie i udostępnianie informacji i danych pochodzących z takich sensorów, jak radary, kamery wideo, AIS, GPS, aparaty fotograficzne oraz z połączeń audio, wiadomości SMS, plików i notatek. Informacje te mogą być udostępniane na bieżąco oraz archiwalnie z synchronizacją zdarzeń lub bez synchronizacji. Forma i sposób prezentacji jest konfigurowany przez personel w zależności od aktualnych potrzeb. Na wieloekranie stanowiska wizualizacji zadań można prezentować jednocześnie wiele zadań.

Performance measurements and optimization of visualization of routes traveled in the distributed dispatcher and teleinformation system for visualization of multimedia data for the Border Guard

Monitoring of country maritime border is an important task of the Border Guard. This activity can be enhanced with the use of the technology enabling gathering information from distributed sources, processing of that information and its visualization. The system presented in the paper is an advancement of the previously developed distributed map data exchange system. The added functionality allows to supplement the map data with multimedia (telephone and radio calls, video (cameras), photos, files, SMS) and presentation of current and archival situation on a multidisplay screen in the Events Visualization Post. The performance tests, and in particular the measurement of waiting times for responses, show that the biggest influence on the Center server delays is the handling of messages regarding visualization of traveled routes. Therefore, it was decided to optimize the way of visualization of traveled routes on digital maps in order to reduce the amount of overload of the Center. The main focus of this article is a description of the concept of a new method of visualization of traveled routes and a new way of retrieving data on traveled routes. In addition, the paper sets further direction for the development of the STRADAR system, such as visualization of radar data from a new type of radar devices, control of cameras at observation points, monitoring of system components, and more.

ROZPROSZONY SYSTEM KOMUNIKACJI I NADZORU DLA MORSKIEGO ODDZIAŁU STRAŻY GRANICZNEJ – PROJEKT STRADAR

System STRADAR to wynik realizacji projektu, którego gestorem jest MO SG. Był on współfinansowany przez NCBiR. W artykule opisano system, przedstawiając ogólną koncepcję, architekturę, elementy funkcjonalne i realizację oprogramowania zainstalowanego w tych elementach. Krótko scharakteryzowano także testy, jakim poddano system, który na tym etapie – jako całość – osiągnął VII poziom gotowości technologii.

Sterowanie kamerami i wizualizacja danych radarowych w rozproszonym systemie dyspozytorskim STRADAR dla straży granicznej

STRADAR to rozproszony system danych multimedialnych, przeznaczony do monitorowania granic morskich kraju, co jest ważnym zadaniem Morskiego Oddziału Straży Granicznej. System umożliwia przechowywanie, wyszukiwanie i wyświetlanie danych dotyczących zdarzenia będącego obiektem zainteresowania dla Straży Granicznej. Przedstawiono kolejny etap rozwoju projektu STRADAR (Strumieniowa transmisja danych czasu rzeczywistego w rozproszonych systemach dyspozytorskich i teleinformatycznych Straży Granicznej), realizowanego na rzecz bezpieczeństwa i obronności państwa. W ramach rozszerzenia projektu dodano nową funkcjonalność, umożliwiającą sterowanie kamerami i wizualizację danych radarowych. W przypadku sterowania kamerami szczegółowo opisano zgodną ze standardem ONVIF procedurę komunikacji między stanowiskiem wizualizacji zdarzeń a kamerą. Zaprezentowano także oprogramowanie do sterowania kamerą zintegrowane ze stanowiskiem wizualizacji zdarzeń. Następnie opisano przechowywanie, przetwarzanie i wizualizację danych radarowych, które są również jednym z zadań omawianego projektu badawczo-rozwojowego. Przedstawiono ogólną zasadę przepływu danych radarowych w systemie oraz techniczny opis oprogramowania. Zamieszczono również zbiór funkcjonalności sterowania kamerami oraz wizualizacji danych radarowych.

Stradar - Multimedia Dispatcher and Teleinformation System for the Border Guard

Security of national borders requires utilization of multimedia surveillance systems automatically gathering, processing and sharing various data. The paper presents such a system developed for the Maritime Division of the Polish Border Guard within the STRADAR project. The system, apart from providing communication means, gathers data, such as map data from AIS, GPS and radar receivers, videos and photos from camera or audio from phone calls and SMS messages, from multiple mobile units and stationary points located along the coastline. All gathered data can be visualized on a multidisplay by the personnel that can dynamically select presented data and configure form of presentation. The paper describes system functionalities, its hardware and software implementation, and presents results of acceptance tests that the system have recently passed.

VISUALIZATION OF SCANTER AND ARPA RADAR DATA IN THE DISTRIBUTED TELEINFORMATION SYSTEM FOR THE BORDER GUARD

Monitoring of country maritime border is an important task of the Border Guard. This activity can be enhanced with the use of the technology enabling gathering information from distributed sources, processing of that information and its visualization. The paper presents the next stage of development of the STRADAR project (Streaming of real-time data transmission in distributed dispatching and teleinformation systems of the Border Guard), which is realized for the security and defence of the country. In the paper, storing, processing and visualization of the radar data, which is one of the tasks of the discussed scientific and research project, is described. Firstly, the general principle of radar data flow in the system was presented. Secondly, technical software description was described. Finally, radar data visualization functionality was presented.

Streaming Real-time Data in Distributed Dispatcher and Teleinformation Systems for Visualization of Multimedia Data of the Border Guard

Surveillance of the sea borders is a very important task for the Border Guard. Monitoring of country maritime border is an important task of the Border Guard. This task can be facilitated with the use of the technology enabling gathering information from distributed sources and its supervision and visualization. This task can be accomplished using a technology that allows to collect information from distributed sensors of different types, unify the collected information, and present the synchronized data. The system presented in the paper is an extension and enhancement of the previously developed distributed map data exchange system. The added functionality allows to supplement the map data with multimedia (telephone and radio calls, video (cameras), photos, files, SMS/SDS) and presentation of current and archival situation on a multi-display screen in the Events Visualization Post. In the paper, the system architecture, functionality and main system elements are described and supported with preliminary analysis and test results.