Temat: radio navigation - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Survey of Radio Navigation Systems
Autorzy:: Gilski, P.
Stefański, J.
Tematy:: radio navigation
radio communication
satellite navigation systems
radiofrequency identification; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/227025.pdf Link otwiera się w nowym oknie
Opis:: At present, there is a growing demand for radio navigation systems, ranging from pedestrian navigation to consumer behavior analysis. These systems have been successfully used in many applications and have become very popular in recent years. In this paper we present a review of selected wireless positioning solutions operating in both indoor and outdoor environments. We describe different positioning techniques, methods, systems, as well as information processing mechanisms.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Velocity measurement using the FDOA Method in ground-based radio navigation system
Autorzy:: Sadowski, J.
Tematy:: radio navigation
spread spectrum
velocity estimation
FDOA; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/221491.pdf Link otwiera się w nowym oknie
Opis:: Velocity is one of the main navigation parameters of 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 the DS-CDMA radio navigation system is proposed, which does not require full synchronization of reference stations carrier frequencies. The article presents basics of FDOA (frequency difference of arrival) velocity measurements together with application of this method to an experimental radio navigation system called AEGIR and with some suggestions about the possibility to implement such FDOA measurements in other kinds of asynchronous DS-CDMA radio networks. The main part of this paper present results of performance evaluation of the proposed method, based on laboratory measurements.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Implementation of Doppler-Based Location Sensor on Unmanned Aerial Vehicle
Autorzy:: Szczepanik, Rafał
Tematy:: radio emitter
localization
Signal Doppler Frequency method
radio navigation
UAV; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:: https://bibliotekanauki.pl/articles/61681918.pdf Link otwiera się w nowym oknie
Opis:: The article presents the first implementation of the Signal Doppler Frequency (SDF) location method on an Unmanned Aerial Vehicle (UAV) named Autonomous System of Location radio EmmiteRs (ASLER), employing a DJI Matrice UAV as its mobile platform for the radio sensor. The system is used for position estimation, i.e., determining the location coordinates of localized radio emitters. Such functionality is the basis of radio reconnaissance, electronic warfare, or combat systems, and many radio navigation systems. The ASLER localization procedure is based on the Doppler localization method, also known as the SDF. Its distinctive feature is the use of a single moving platform for localization. In addition, the SDF allows simultaneous localization of multiple emission sources, which is an innovative distinction compared to other solutions of this class. ASLER is the first autonomous implementation of the SDF method on a flying platform. This paper illustrates the hardware and software implementation of location sensor, and results of the first empirical studies.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Mobile Radio Beacons in Coastal Reserved Navigation System for Ships
Autorzy:: Kelner, J. M.
Ziółkowski, C.
Tematy:: radio beacons
coastal reserved navigation system
navigation system
signal Doppler frequency
Global Navigation Satellite System
Terrestrial Navigation System
Radio Navigation System; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/1841623.pdf Link otwiera się w nowym oknie
Opis:: At the turn of the 20th and 21st centuries, Global Navigation Satellite Systems (GNSSs) dominated navigation in air, sea, and land. Then, medium-range and long-range terrestrial navigation systems (TNSs) ceased to be developed. However, with the development of GNSS jamming and spoofing techniques, the TNSs are being re-developed, such as the Enhanced Loran. The Polish Ministry of Defense plans to develop and implement a medium-range backup navigation system for the Polish Navy which will operate in the Baltic coastal zone. This plan is a part of the global trend. This paper presents the concept of a reserve TNS (RNS) that is based on the signal Doppler frequency (SDF) location method. In 2016, the concept of the RNS, which is based on stationary radio beacons located on coastal lighthouses, has been presented. From the military viewpoint, the use of the mobile radio beacons, which may change their location, is more justified. Therefore, the paper presents an idea of using the mobile beacons for this purpose. In this paper, effectiveness of the mobile RNS is shown based on simulation studies.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Availability of maritime radio beacon signals for R-Mode in the Southern Baltic Sea
Autorzy:: Gewies, S.
Grundhöfer, L.
Hehenkamp, N.
Tematy:: radio navigation
radio beacon
R-Mode
Southern Baltic Sea
radio beacon Signals
maritime radio beacon
ranging mode
positioning
Navigation and Timing (PNT); Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116740.pdf Link otwiera się w nowym oknie
Opis:: This paper presents an overview of the development of a terrestrial positioning system called Ranging Mode (R-Mode) in the Southern Baltic Sea region which utilizes already existing maritime radio infrastructure. Here, an R-Mode testbed is planned to be set up until 2020 that meets maritime user needs for resilient PNT. First measurements of radio beacon signals on-board a vessel sailing in the Southern Baltic Sea show the good availability of beacon signals in this region. A comparison of received signals with a coverage prediction based on the nominal range of radio beacons shows the shortcoming of this approach and emphasizes the need for more elaborated coverage predictions which consider all effects of medium frequency wave propagation at day and night. In the measurements results the skywave has a major impact on the beacon signal stability in the night. The time stability of the signal amplitude seems to be a good indicator for disturbed reception conditions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Using elements of integral calculus in the process of optimising the configuration of navigation positioning systems
Autorzy:: Czaplewski, K.
Świerczyński, S.
Zwolan, P.
Tematy:: marine navigation
integral calculus
aids to navigation
land radio-navigation system
navigation– hydrographic support
accuracy of navigation
criteria for evaluating navigation systems; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135468.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the authors’ reflections on using integral calculus when preparing the process of locating single ground-based chains of positioning systems in marine navigation. These reflections are purely theoretical and presented research results apply to a hypothetical navigation system that operates based on the ratio of distances, which is regarded as a navigation parameter.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: EGNOS performance in several maritime campaigns
Autorzy:: Lacarra, E.
González, R.
Lopez-Martinez, M.
Tematy:: safety at sea
GNSS
radio navigation
satellite-based augmentation systems
EGNOS performance
European Geostationary Navigation Overlay Service
testing campaigns
shipborne receiver; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/59123386.pdf Link otwiera się w nowym oknie
Opis:: This article presents the EGNOS (European Geostationary Navigation Overlay Service) performance observed along several maritime campaigns carried out in European waters with the objective to demonstrate the availability of corrections and the suitability of the accuracy to support maritime navigation. The regions selected correspond to those located in the border area of EGNOS coverage and include the following campaigns: Norwegian coast in 2018, Southwest of Europe in 2018 & 2019, Finnish coast in 2019, Baltic Sea in 2021 and Irish coast in 2022. These results in real maritime environment aim at demonstrating that EGNOS L1 service is suitable to support maritime navigation in ocean waters, coastal waters and harbour entrances/approaches according to the operational requirements defined in the IMO Res. A.1046 (27), being beneficial for maritime community.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Polski system DGPS — geneza: 1991–1993
Polish DGPS system — origin: 1991–1993
Autorzy:: Kopacz, Z.
Specht, C.
Tematy:: osłona radionawigacyjna akwenów morskich RP
polski system DGPS
nawigacja
geneza
radio-navigation support in Polish maritime areas
Polish DGPS system
navigation
origin; Pokaż więcej
Wydawca:: Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Powiązania:: https://bibliotekanauki.pl/articles/222933.pdf Link otwiera się w nowym oknie
Opis:: W 2014 roku mija dwudziesta rocznica uruchomienia na polskim wybrzeżu systemu różnicowego GPS (Differential Global Positioning System) stanowiącego główny element osłony radiona-wigacyjnej akwenów morskich RP. Cztery lata od uruchomienia pierwszej stacji referencyjnej DGPS na świecie i niepełna trzy lata od pierwszej tego typu instalacji w Europie Polska dysponowała najnowocześniejszym rozwiązaniem pozycyjnym w nawigacji morskiej. W artykule, pierwszym z serii publikacji dotyczących polskiego systemu DGPS, zaprezentowano krajowe jednostki naukowe, które przyczyniły się do realizacji tego projektu, podstawy teore-tyczne metody różnicowej DGPS, model matematyczny wyznaczania współrzęd-nych pozycji wraz z dyskusją błędów i genezę systemów DGPS na świecie. Zamierzeniem autorów jest również próba oceny realizowanych działań badawczych z perspektywy dwudziestu lat, gdy dysponuje się większą wiedzą i doświadczeniem oraz nieporównywalnymi narzędziami.
The year 2014 marks the 25th anniversary of the commencement of the Differential Global Positioning System on the Polish coast, which is the main element of radio-navigation support in the Polish maritime areas. It must be emphasized that it was only four years after the first DGPS station in the world was started and less than three years after the first installations of this kind were started in Europe Poland enjoyed the most modern positioning solution in marine navigation. This paper, the first in a series of publications relating to the Polish DGPS system, presents national research centers which have significantly contributed to implementing this project. It also includes theoretical fundamentals of the differential method used in DGPS, a mathematical model for fixing position data together with a discussion concerning errors as well as the origins of DGPS systems in the world. It is the authors’ intention to evaluate research projects conducted during the last twenty years, drawing on significantly greater knowledge and experience and incomparable tools.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Research on radiation characteristics of plasma Yagi antenna based on AIS base station in ships’ routeing waters
Autorzy:: Sun, Y.
Chen, Y.
Kong, F.
Wei, Y.
Zhan, F.
Zhao, J. S.
Tematy:: radio navigation
radiation characteristics
plasma Yagi antenna
ships routeing
AIS base station
AIS based shipping routes
ships routeing waters
Automatic Identification System (AIS); Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/117021.pdf Link otwiera się w nowym oknie
Opis:: A Yagi plasma antenna model was established by HFSS according to the relationship between plasma dielectric constant and electron density. The patterns were simulated by changing plasma parameters and the number of director dipoles. Results show that when the passive vibrators were switched off, the antenna is omnidirectional antenna. The directionality increases with the increase of the number of passive dipole and the main lobe of which narrows down. Then the plasma Yagi antenna model is established by plasma tube, the gain changed by changing the number of passive dipoles, so the plasma Yagi antenna has a very good reconfigurability. Results prove that the feasibility of the plasma Yagi antenna can be used on AIS base station of Ships’ Routeing waters. It can promote the communication and capability of maritime supervision in Ships’ Routeing waters.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Main aspects of a maritime e-navigation project
Autorzy:: Korcz, Karol
Tematy:: navigation
shipping
maritime e-navigation
maritime radio communication
ship safety; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/242157.pdf Link otwiera się w nowym oknie
Opis:: Many devices and systems, including electronic ones, are used in the operation of sea-going vessels. Fast technological development in the field of electronics, radio communications and computer science inspires the more and more new proposals for the changes of these devices and systems. The rules and scope of sea-going vessels equipment, related to ensuring their safety, are strictly regulated by the International Maritime Organization (IMO). Considering the above, several countries have submitted to the IMO-Maritime Safety Committee (MSC) a proposal to prepare a vision of a broad strategy for incorporating new technologies in a structural manner, ensuring their compatibility with already existing different navigation and communication technologies and services. The overriding goal of this strategy would be to improve the efficiency, safety and reducing the cost of the entire system, providing global coverage and applicable to all types of sea-going vessels. In response to this proposal, the MSC decided to start work on the project "Preparation of e-navigation strategy". The article presents the general concepts and goals of the e-navigation project. Priority needs of e-navigation users were also discussed. The key elements of the project are presented too. The radio communication aspects of the e-navigation project were also considered. Finally, the enavigation Strategy Implementation Plan (SIP) and its progress were presented.
Dostawca treści:: Biblioteka Nauki

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