Wyniki wyszukiwania dla: ACOUSTIC POSITIONING SYSTEM

• Phase-difference positioning in asynchronous system

  Publikacja

  • J. Sadowski

  - Rok 2018

  This paper presents concept and implementation of digital positioning system based on phase difference measurements, designed as a navigational aid for marine applications. Main feature of proposed system is the ability to work in both synchronous mode, with one master station and set of slave stations synchronized with master, and in asynchronous mode with independent clocking of all stations.

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• Device for spoofing in global positioning system

  Publikacja

  • R. Katulski
  • J. Magiera
  • A. Czapiewska

  - Zeszyty Naukowe Akademii Marynarki Wojennej - Rok 2012

  This article describes the device which may be used to generate false GPS signals and emit them into radio communication channel. Such attack is called GPS spoofing. Each GPS receiver which remains in the range of a spoofing device (called spoofer) indicates time and position coordinates which are predetermined by the spoofer’s operator. Spoofing may be used e.g. in order to disable the terrorist group from obtaining correct navigation...

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• Dynamic Positioning System with Vectorial Backstepping Controller

  Publikacja

  • A. Witkowska

  - Rok 2013

  The problem of synthesis a dynamic positioning system for low frequency model of surface vessel was considered in this paper. The recursive vectorial backstepping control design was used to keep a fixed position and heading in presence of wave disturbances. The passive observer was introduced to smooth the measurements and to estimate the velocities needed for the control algorithm. Some parameters of observer were optimized off-line...

• An Analysis of Uncertainty and Robustness of Waterjet Machine Positioning Vision System

  Publikacja

  • D. Dziak
  • B. Jachimczyk
  • W. Kulesza

  - Elektronika Ir Elektrotechnika - Rok 2013

  The paper presents a new Automatic Waterjet Positioning Vision System (AWPVS) and investigates components of workpiece positioning accuracy. The main purpose of AWPVS is to precisely identify the position and rotation of a workpiece placed on a waterjet machine table. Two webcams form a basis for the system, and constitute its characteristics. The proposed algorithm comprises various image processing techniques to assure a required...

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• Control System Design for Dynamic Positioning using Vectorial Backstepping

  Publikacja

  • A. Witkowska

  - Zeszyty Naukowe Akademii Morskiej w Szczecinie - Rok 2013

  The problem of synthesis a dynamic positioning system for low frequency model of surface vessel was considered in this paper. The recursive vectorial backstepping control design was used to keep a fixed position and heading in presence of wave disturbances. The passive observer was introduced to smooth the measurements and to estimate the velocities needed for the control algorithm. The computer simulation results were given to...

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• Analysis of data fusion algorithms for the vessel with the dynamic positioning system

  Publikacja

  • K. Jaroś
  • R. Śmierzchalski
  • A. Witkowska

  - Przegląd Elektrotechniczny - Rok 2022

  The dynamic positioning (DP) system on the vessel is operated to control the position and heading of the vessel with the use of propellers and thrusters installed on the board. On DP vessels redundant measurement systems of position, heading and the magnitude and direction of environmental forces are required for safety at sea. In this case, a fusion of data is needed from individual measurement devices. The article proposes a...

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• Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

  Publikacja

  • C. Specht
  • L. Smolarek
  • J. Pawelski
  • M. Specht
  • P. S. Dąbrowski

  - Polish Maritime Research - Rok 2019

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• Polish DGPS System: 1995–2017 – Study of Positioning Accuracy

  Publikacja

  • C. Specht
  • L. Smolarek
  • J. Pawelski
  • M. Specht
  • P. Dąbrowski

  - Polish Maritime Research - Rok 2019

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• Online urban acoustic noise monitoring system

  Publikacja

  • A. Czyżewski
  • J. Kotus
  • M. Szczodrak

  - NOISE CONTROL ENGINEERING JOURNAL - Rok 2012

  Concepts and implementation of the Online Urban Noise Monitoring System are presented. Principles of proposed solution used for dynamic acoustical maps creating are discussed. The architecture of the system and the data acquisition scheme are described. The concept of noise mapping, based on noise source model and propagation simulations, was developed and employed in the system. Dynamic estimation of noise source parameters utilized...

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• Web Based Acoustic Noise Measurement System.

  Publikacja

  • A. Czyżewski
  • J. Kotus

  - Rok 2004

  W referacie przedstawiono projekt multimedialnego systemu przeznaczonego do monitorowania zagrożeń hałasem środowiskowym. Nadrzędnym celem realizowanego projektu jest zwiększenie efektywności profilaktyki chorób słuchu. Opracowywany system umożliwia odbiór, przechowywanie danych, analizę i wizualizację wyników pomiarów hałasu pozyskanych od urządzeń pomiarowych za pośrednictwem Internetu. Przedstawiono również opracowanie miernika...