scholarly journals NLOS Identification Based UWB and PDR Hybrid Positioning System

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 102917-102929
Author(s):  
Dae-Ho Kim ◽  
Jae-Young Pyun
Keyword(s):  
Positioning System ◽  
Hybrid Positioning

scholarly journals An integrated positioning system for the Toronto Transit System

2021 ◽  
Author(s):  
Mahmoud Salem I.S. Abd El-Gelil
Keyword(s):  
System Design ◽  
Dead Reckoning ◽  
Field Tests ◽  
Integrated System ◽  
Positioning System ◽  
Transit System ◽  
Hybrid Positioning ◽  
Bus Service ◽  
And Performance ◽  
Signpost System

In this thesis, a hybrid positioning system is developed, which combines GPS, Dead Reckoning (DR) and Signpost technologies for the purpose of improving the Toronto Transit System bus service. The DR system is used as the main positioning system, while GPS and Signpost systems are used as aiding systems to compensate for the DR errors. The integration is done in the position domain, which simplifies the system design. A centralized Kalman filter with five states is developed to combine all the available measurements. Field tests have been designed and conducted to assess the system design and performance under various environmental conditions. It is shown that the achieved positioning accuracy of the integrated DR/GPS/Signpost system is at the few metres level in unobstructed environments. In addition, despite the signal obstruction in the downtown area, the positioning solution of the integrated system is still sufficiently precise.

scholarly journals The Positioning system for KM3NeT

2019 ◽  
Vol 207 ◽  
pp. 07005 ◽  
Author(s):  
Giorgio Riccobene
Keyword(s):  
Environmental Monitoring ◽  
Positioning System ◽  
Acoustic Detection ◽  
Acoustic System ◽  
Absolute Positioning ◽  
Hybrid Positioning ◽  
Electronic Board ◽  
Optical Module ◽  
Acoustic Positioning

The paper describes the implementation of a hybrid positioning system based on tilt and compass sensors, integrated into an electronic board, and an acoustic positioning system to be installed aboard KM3NeT. The acoustic system will be capable to fulfil detector relative and absolute positioning, to provide data for cross-fertilisation with Earth and Sea science (bio-acoustics and environmental monitoring) and to allow studies for neutrino acoustic detection. Tilt and Compass boards installed in each optical module provide information about the DOM orientation.

scholarly journals Experimental determination of electromagnetic brake parameters of the positioning system

2019 ◽  
Vol 254 ◽  
pp. 03011
Author(s):  
Piotr Perz ◽  
Dominik Wilczyński ◽  
Ireneusz Malujda
Keyword(s):  
Testing Machine ◽  
Effective Control ◽  
Pneumatic Cylinder ◽  
Positioning System ◽  
Electromagnetic Brake ◽  
Hybrid Positioning ◽  
Piston Speed ◽  
Cylinder Piston ◽  
Braking Phase

The paper presents the results of an electromagnetic brake test of a hybrid positioning system consisting of a pneumatic cylinder and an electromagnetic brake. Brake tests were carried out on the MTS Insight testing machine, which determined the attraction forces of the electromagnet depending on the size of the air gap and the current flowing through the winding of the electromagnet. The time constants of the positioning unit and the electromagnet were measured, which allowed to develop an effective control system reaching shorter times and higher positioning accuracy as well as a higher average piston speed. The presented system ensures free programming of displacements of the actuator and maintaining the set position. Obtaining higher average speeds of the pneumatic cylinder piston is possible due to the use of effective control parameters such as shortening the braking phase and the time of reaching the desired position.

scholarly journals Methods of Controlling a Hybrid Positioning System Using LabVIEW

2017 ◽  
Vol 177 ◽  
pp. 339-346 ◽  
Author(s):  
Piotr Perz ◽  
Ireneusz Malujda ◽  
Dominik Wilczyński ◽  
Paweł Tarkowski
Keyword(s):  
Positioning System ◽  
Hybrid Positioning
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