Temat: GNSS - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: GNSS frequencies, signals, receiver capabilities and applications
Autorzy:: Januszewski, J.
Tematy:: GNSS
GNSS receiver
GNSS frequency
GNSS signals
GNSS receiver capabilities and applications; Pokaż więcej
Data publikacji:: 2018
Powiązania:: https://bibliotekanauki.pl/articles/135034.pdf Link otwiera się w nowym oknie
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 57-62
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Opis:: Nowadays (August 2017) position data can be obtained generally from satellite navigation systems (SNS), such as GPS and GLONASS, and satellite based augmentation systems (SBAS) which can be either global, such as EGNOS, GAGAN, MSAS and WAAS, or regional, such as NAVIC (IRNSS) in India. Two new global SNSs, Galileo and BeiDou, three new global SBASs, SDCM, KASS and SNAS, and one new regional SBA, QZSS in Japan, are under construction. The generic name given to all these abovementioned systems is GNSS (Global Navigation Satellite Systems). This paper presents details of the following: changes that have occurred in the cumulative core revenue in different GNSS market segments (road, Location Based Service LBS, surveying, agriculture, timing & synchronization, aviation, maritime, drones and rail in 2017) in the last 8 years; an overview of the GNSS industry and location-based services in the world; details of current and future GNSS market evolution; GNSS unit shipments in 13 different categories of maritime application; the frequency and constellation capabilities of GNSS receivers; GNSS frequencies that will be common in the future; the adoption of multi-constellation, multi-frequency and dual-frequency as key enablers of improved accuracy and integrity; GNSS services available for civil and authorized users, and multiple signals in the case of all four global SNSs.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: GNSS receivers, theirs features, user environment and applications
Autorzy:: Januszewski, J.
Tematy:: GNSS receivers
GNSS applications
GNSS comparison; Pokaż więcej
Data publikacji:: 2014
Powiązania:: https://bibliotekanauki.pl/articles/320554.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2014, 21; 49-58
1640-8632
Pojawia się w:: Annual of Navigation
Opis:: Since many years the coordinates of the position can be obtained with the use of satellite navigation and augmentation systems, SNS and SBAS, respectively. All these systems are called GNSS (Global Navigation Satellite Systems). The main task of the user segment is to transform the products delivered by the GNSS infrastructure into services that users are mainly interested in. That’s why GNSS receiver selection depends on user application. Nowadays several hundred different receivers provided by more than one hundred manufacturers are available on the world market. The review of the performance parameters of GNSS receivers accessible in 2014 and last three years is presented in this paper. Additionally the paper gives the reply to some important questions as: for how many applications the given model is destined, which is the percentage of the receivers designed for marine and navigation users, which equipment features of the receiver are the most important for given application, which satellite signals apart from GPS signals can be tracked in the receiver?
Współrzędne pozycji można otrzymać z użyciem nawigacji satelitarnej i systemów wspomagających, odpowiednio GNSS i SBAS. Wszystkie są nazywane mianem GNSS (globalne, nawigacyjne systemy satelitarne). Zadaniem głównym segmentu użytkownika tych systemów jest przekształcenie sygnałów dostarczanych przez infrastrukturę GNSS w usługi, którymi jest on najbardziej zainteresowany, dlatego wybór rodzaju odbiornika GNSS zależy od indywidualnych potrzeb. Obecnie na światowym rynku dostępnych jest kilkaset różnych odbiorników oferowanych przez ponad stu producentów. W artykule przedstawiono przegląd parametrów odbiorników GNSS dostępnych w 2014 roku i w trzech poprzednich latach. Dodatkowo artykuł daje odpowiedź na pytania, dla ilu zastosowań dany model jest przeznaczony, jaki procent odbiorników jest przydatny dla zastosowań morskich, które z cech odbiornika są najważniejsze dla użytkownika, które systemy, oprócz GPS, mogą być śledzone w odbiorniku.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Experimental analysis of navigational precision for dedicated GNSS receivers
Autorzy:: Słowik, M.
Mrozek, T.
Tematy:: GNSS receivers
DGPS measurements
GPS
GLONASS
GNSS
nawigacja
odbiornik GNSS; Pokaż więcej
Data publikacji:: 2016
Powiązania:: https://bibliotekanauki.pl/articles/387492.pdf Link otwiera się w nowym oknie
Źródło:: Acta Mechanica et Automatica; 2016, 10, 4; 253-257
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Opis:: In the paper experimental investigations related with analysis of navigational precision of three chosen GNSS receivers are shown. Used receivers allow for measurement of navigational signals in following modes of operations: receiving signals from singlefrequency GPS system, dual-frequency GPS/GLONASS system, and receiving signals from GPS constellation with use of differential measurements. In the last mode the base station and mobile receiver were configured for transmitting/receiving differential corrections by pair of industry-grade radio modems. The most important features and configuration of navigational receivers for conducted experiment are presented. Afterward the features of computer program designed especially for simultaneous acquisition, analysis of quality parameters and archiving of navigational signals are shown. The results of conducted investigations are also shown. For each of the receivers quantity and quality parameters such as maximum and minimum numbers of visible satellites and DOP (dilution of precision) parameters achieved during the experiment are given.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: GNSS positioning error change-point detection in GNSS Positioning Performance Modelling
Autorzy:: Filić, M.
Filjar, R.
Tematy:: Global Navigation Satellite System (GNSS)
positioning
Navigation and Timing (PNT)
GNSS Positioning Performance Modelling
GNSS Positioning Error Change-point Detection
GNSS Positioning Performance
GNSS Resilience
GNSS Utilisation Risk Mitigation
GNSS Positioning Performance Degradation; Pokaż więcej
Data publikacji:: 2019
Powiązania:: https://bibliotekanauki.pl/articles/117469.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 575-579
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: Provision of uninterrupted and robust Positioning, Navigation, and Timing (PNT) services is essential task of Global Navigation Satellite Systems (GNSS) as an enabling technology for numerous technology and socio-economic applications, a cornerstone of the modern civilisation, a public goods, and an essential component of a national infrastructure. GNSS resilience may be accomplished only with complete understanding of the causes of GNSS positioning performance disruptions and degradations, presented in a form of applications- and scenarios-related models. Here the application of change-point detection methods is proposed and demonstrated in a selected scenario of a fast-developing ionospheric storm’s impact on GNSS positioning performance, as a novel contribution to forecasting GNSS positioning performance model development and GNSS utilisation risk mitigation.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Threats for GNSS – present status & counteractions
Autorzy:: Felski, Andrzej
Tematy:: GNSS
jamming
spoofing
countermeasures to GNSS threats; Pokaż więcej
Data publikacji:: 2024
Powiązania:: https://bibliotekanauki.pl/articles/58443771.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2024, 29; 16-24
1640-8632
2300-6633
Pojawia się w:: Annual of Navigation
Opis:: Nowadays, most of the society, especially young people, treat GPS as an obvious source of information, just like television, radio or the Internet. In fact, we are dealing not only with the American system, but also several others that make up Global Navigation Satellite Systems. This is the primary source of situational awareness for many activities: professional, military and business as for everyday use. From crisis actions, by timing and synchronization in critical infrastructures such as financial, communications, power grid and industrial systems, and more. In fact, we can talk about the critically reliant of human life upon GNSS. Like any radio system, GNSS is also susceptible to interference and changes in the ionosphere, however on the turn of the centuries appeared the new, not expected threat in the form of more and more frequent cases of interferences, especially intendent one. If so, appears the question how to recognize this threat and how to proceed in such case? In the paper, some current information about the question, as well as some suggestions how to act on board in such cases will be presented.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Applications of global navigation satellite systems in maritime navigation
Autorzy:: Januszewski, J.
Tematy:: GNSS
GPS system
GNSS receiver
shipborne GPS and GNSS receiver
type of GPS and GNSS receivers
maritime navigation; Pokaż więcej
Data publikacji:: 2016
Powiązania:: https://bibliotekanauki.pl/articles/135402.pdf Link otwiera się w nowym oknie
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 47 (119); 74-79
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Opis:: Currently (April 2016) uninterrupted information about a ship’s position can be obtained from specialized electronic position-fixing systems, in particular, Satellite Navigation Systems (SNSs) such as GPS and GLONASS and Satellite Based Augmentation Systems (SBASs) such as EGNOS or WAAS. The generic name given to all the above mentioned systems is Global Navigation Satellite Systems (GNSS). Many models, designed for the ship’s bridge and provided by about a dozen manufacturers, are available on the world market. In Europe, one of the most comprehensive sources of knowledge on the global GNSS market is a report published, on average, every 15 months by the European GNSS Agency GSA. Another receiver survey is published each year in the January number of the magazine “GPS World”. The detailed analysis of market report and receiver survey, possible use of EGNOS and Galileo in the maritime market, and different maritime applications of GNSS equipment are described in this paper.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: BeiDou and Galileo, Two Global Satellite Navigation Systems in Final Phase of the Construction, Visibility and Geometry
Autorzy:: Januszewski, J.
Tematy:: Global Navigation Satellite System (GNSS)
BeiDou
Galileo
GNSS construction
GNSS geometry
GNSS visibility
Global Positioning System (GPS)
Dilution of Precision (DOP); Pokaż więcej
Data publikacji:: 2016
Powiązania:: https://bibliotekanauki.pl/articles/117164.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 381-387
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: Spatial segment is one of three segments of each satellite navigation systems (SNS). Nowadays two SNSs, GPS and GLONASS, are fully operational, two next SNSs, BeiDou in China and Galileo in Europe, are in final phase of the construction. In the case of China system this segment will consist of 35 satellites with three types of orbits ? medium (MEO), geostationary (GEO) and inclined geosynchronous (IGSO). As GEO and IGSO satellites can be used in China and Asia-Pacific region only, BeiDou MEO constellation with 27 fully operational satellites will be taken into account in this paper. The orbital planes of the Galileo constellation will be divided in “slots” that contains at least one operational satellite. The Galileo reference constellation has 24 nominal orbital positions or operational slots in MEO homogeneously distributed in 3 orbital planes; i.e. 8 slots equally spaced per plane. As the error of user’s position obtained from both systems depends on geometry factor DOP (Dilution Of Precision) among other things the knowledge of the number of satellites visible by the user above given masking elevation angle Hmin and the distributions of DOP coefficient values, GDOP in particular, is very important. The lowest and the greatest number of satellites visible in open area by the observer at different latitudes for different Hmin, the percentage of satellites visible above angle H, distributions (in per cent) of satellites azimuths and GDOP coefficient values for different Hmin for BeiDou and Galileo systems at different latitudes are presented in the paper.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Jamming as a threat to navigation
Autorzy:: Świerczyński, S.
Zwolan, P.
Rutkowska, I.
Tematy:: GNSS
jamming; Pokaż więcej
Data publikacji:: 2016
Powiązania:: https://bibliotekanauki.pl/articles/320587.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2016, 23; 219-233
1640-8632
Pojawia się w:: Annual of Navigation
Opis:: The whole world is dependent on satellite systems as they are used in almost all fields of economic and social life, in transport, banking, industry, agriculture, etc. Thanks to the development of technology, most smartphones used everyday have been equipped with a built-in GNSS receiver, many cars with navigation systems and all vessels with GNSS receiver or a satellite compass for navigation. Systems working on similar frequencies can be used for jamming or spoofing satellite systems. Such purposeful system jamming can be damaging to users and society as a whole. This article includes a description of jamming and a presentation of one of possible receiver designs allowing for jamming signal detection. This receiver has been designed and built by the authors of the article.
Systemy satelitarne uzależniły cały świat i są wykorzystywane niemal we wszystkich dziedzinach życia gospodarczego i społecznego, w transporcie, bankowości, przemyśle, rolnictwie itp. Rozwój technologii spowodował, że większość smartfonów, które używamy, ma wbudowany odbiornik GNSS, w wielu samochodach montowana jest nawigacja, a wszystkie jednostki pływające korzystają z odbiornika GNSS lub kompasu satelitarnego. Uzależnienie od systemów, które pracują na podobnych częstotliwościach, może być wykorzystane w celu zakłócenia (jamming) lub przejęcia kontroli (spoofing) nad systemami satelitarnymi. Takie celowe zakłócenia mogą być bardzo szkodliwe dla użytkowników (społeczeństwa). W artykule opisano zjawisko jammingu oraz przedstawiono jedno z rozwiązań konstrukcyjnych odbiornika umożliwiającego detekcję sygnału zakłócającego. Odbiornik ten został zaprojektowany oraz zbudowany przez autorów artykułu.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Visibility and geometry of galileo satellites constellation during initial operation capability
Autorzy:: Januszewski, J.
Tematy:: GNSS
Galileo; Pokaż więcej
Data publikacji:: 2012
Powiązania:: https://bibliotekanauki.pl/articles/320717.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2012, No. 19, part 1; 79-90
1640-8632
Pojawia się w:: Annual of Navigation
Opis:: The European Space Agency (ESA) confirmed that it plans to declare an Initial Operational Capability (IOC) once a constellation of 18 satellites is achieved in 2014 and after few Soyuz and Ariane launches Full Operational Capability (FOC) once a constellation of 26 satellites next year or later. In the paper are presented the distribution of the number of satellites visible by the observer and the distribution of GDOP coefficient values both for different masking elevation angles (Hmin) at different observer’s latitudes for three constellations, with 18, 22 and 26 satellites, the distribution of satellite azimuths in open area and the percentage of satellites visible above given angle. Additionally for latitude of Poland (zone 50-60°) No Fix (in per cent) and the detailed distribution of GDOP values for six angles Hmin for all these constellations and the results of other calculations are showed. Finally the results concern the possibility of the positioning and its accuracy for different numbers of Galileo satellites at different observer’s latitudes.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The Monitoring System for Aircraft and Veficles of Public Order Services Based on GNSS
Autorzy:: Ćwiklak, J.
Jafernik, H.
Tematy:: monitoring
GNSS; Pokaż więcej
Data publikacji:: 2010
Powiązania:: https://bibliotekanauki.pl/articles/320815.pdf Link otwiera się w nowym oknie
Źródło:: Annual of Navigation; 2010, 16; 15-24
1640-8632
Pojawia się w:: Annual of Navigation
Opis:: Presently a lot of countries carry out aviation tests of Automatic Dependent Surveillance - Broadcast (ADB-S). The on-board GPS receiver is used as a basic source of information on position and time for that system. According to the CNS/ATM plan, traditional radars using by ATC will be replaced for ADB-S in the near future. One the vital element of the system is Global Navigational Satellite System (GNSS). According to the project a research team is going to work out an aviation tracking system for control an air traffic and ground movement in the border area. Moreover, the team will examine the system in the areas of accuracy, range of tracking and reliability as well. The proposed system consists of three basic components: the positioning, airborne GNSS receivers, the transmission of data and the ground station. The research plan is carried out taking into account a variety of air operations, such as a takeoff, a route on a low height, approaching and landing. The idea of monitoring system for aircraft using satellite navigation systems is in line with the concept of the use of GNSS in aviation, both in Europe and worldwide.
Dostawca treści:: Biblioteka Nauki

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