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Tytuł:
GNSS frequencies, signals, receiver capabilities and applications
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/135034.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
GNSS receiver
GNSS frequency
GNSS signals
GNSS receiver capabilities and applications
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.
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
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental analysis of navigational precision for dedicated GNSS receivers
Autorzy:
Słowik, M.
Mrozek, T.
Powiązania:
https://bibliotekanauki.pl/articles/387492.pdf
Data publikacji:
2016
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
GNSS receivers
DGPS measurements
GPS
GLONASS
GNSS
nawigacja
odbiornik GNSS
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.
Źródło:
Acta Mechanica et Automatica; 2016, 10, 4; 253-257
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applications of global navigation satellite systems in maritime navigation
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/135402.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
GPS system
GNSS receiver
shipborne GPS and GNSS receiver
type of GPS and GNSS receivers
maritime navigation
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.
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
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visibility and geometry of galileo satellites constellation during initial operation capability
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/320717.pdf
Data publikacji:
2012
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GNSS
Galileo
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.
Źródło:
Annual of Navigation; 2012, No. 19, part 1; 79-90
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Monitoring System for Aircraft and Veficles of Public Order Services Based on GNSS
Autorzy:
Ćwiklak, J.
Jafernik, H.
Powiązania:
https://bibliotekanauki.pl/articles/320815.pdf
Data publikacji:
2010
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
monitoring
GNSS
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.
Źródło:
Annual of Navigation; 2010, 16; 15-24
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurements of signal delays in software defined radio with use of GNSS modules
Autorzy:
Mężyk, Oskar
Doligalski, Michał
Rybski, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/320946.pdf
Data publikacji:
2019
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GNSS
SDR
Opis:
In the work a method of latency measurement in software defined radio (SDR) is proposed and validated. The test setup uses customer grade GNSS modules as reference time sources and enables relative delay calculation between signals received directly and those bypassed through SDR platform. The method is hardware agnostic in a sense, that it does not involve any custom software or hardware modifications. Tests that compare reported carrier-to-noise ratio and positioning errors were performed to prove functionality of such system. Additionally, authors measured several gnuradio blocks with respect to their impact on total latency introduced into signal path. All tests were performed on a bladeRF low-cost RF front-end. Minimum observed latency for the signal was below 10 ms.
Źródło:
Annual of Navigation; 2019, 26; 98-105
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Europejskie programy GNSS na rynku globalnych systemów nawigacyjnych
European GNSS programmes on the market of global navigation systems
Autorzy:
Warcholik, Witold
Powiązania:
https://bibliotekanauki.pl/articles/438187.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
GNSS
nawigacja
Opis:
The study includes the description of development conditions for the satellite navigation programme Galileo. Its also includes some aspects of the Galileo programme accomplishment, especially its influence on the integration process in Europe and tightening the international connections. The programme has been implemented since the 1990s and its aim is to ensure the independence of the EU countries in such sectors of their economy which are based on the precise information related to location and time. Galileo has also its overregional dimension, which is the result of satellite constellation and its global reach. It is the biggest industrial project conducted within the integrated European structures. What is more, the distinction of Galileo among other European satellite programmes has its roots in its crucial strategic significance rather than in technology or investment costs. So far, the cosmologic institutions have not been formally connected with the integrated European structures, and less importance has been attached to political aspects of their projects. The transformation of the Galileo programme is proceeding in the condition of potential incomes risk from the system work. The fiasco of public and private partnership establishments was the result of differences in estimating the risk of trade incomes and market development. In 2013 Galileo will be in its full operation process and first GPS III satellites will work, what is more, the high precision of this American system and other integrated GNSS systems will establish competition in terms of commercial and amateur aplications. Widening the cooperation between the EU countries and the USA implies many positive effects, such as creating the idea of a multi-system satellite scheme, the compatibility of Galileo and GPS receivers and, what follows, the increase of navigation precision and reduction of overall costs borne by the system owners.
Źródło:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego; 2009, 12; 123-132
2080-1653
Pojawia się w:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jamming as a threat to navigation
Autorzy:
Świerczyński, S.
Zwolan, P.
Rutkowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/320587.pdf
Data publikacji:
2016
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GNSS
jamming
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.
Źródło:
Annual of Navigation; 2016, 23; 219-233
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of usefulness of the mems-based integrated navigation unit in car navigation
Autorzy:
Uradziński, M.
Rapiński, J.
Tomaszewski, D.
Śmieja, M.
Guo, H.
Yu, S.
Jian, X.
Powiązania:
https://bibliotekanauki.pl/articles/298138.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
MEMS
inertial navigation
GNSS
GNSS/IMU integration
car navigation
Opis:
Due to the development of MEMS, there is an opportunity to build a low-cost integrated navigation systems, operating independently of horizon visibility. This paper presents the proposal of an integrated GPS/IMU platform using MEMS technology. In order to verify the performance of a system built at the University of Warmia and Mazury, an experiment was conducted. In this experiment a precise Javad GNSS receiver, commercial grade GPS/IMU XW – ADU5660 and own-built system were used. The experiment was conducted to compare the results obtained from self built device with the working military integrated navigation unit. During the study all three devices were mounted inside moving vehicle. The car drove route inside the Kortowo campus, during which, all equipment performed measurements. Then, the results from both integrated systems were compared with RTK (Real Time Kinematic) results from Javad receiver. Experiments prove that the performance of own device is comparable to the commercial device.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(4); 321-331
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Validation of the EGNOS system in flight tests
Autorzy:
Fellner, A.
Fellner, R.
Jafernik, H.
Powiązania:
https://bibliotekanauki.pl/articles/393735.pdf
Data publikacji:
2014
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
NPA
GNSS
EGNOS
Opis:
Paper present results of the HEDGE project, which was conducted in 2010-2012 to verify EGNOS parameters during air operations in general aviation. Stakeholders participated in that project were: scientific research centers, government agencies, aircraft operator and local small airfield. Aircraft operator involved in a project performed the EGNOS system installation on the aircraft and on the airfield, using plan for technical solution developed in the second phase of the project, and as result of that in next phases of project performed test and certification flights. Additionally aircraft operator is allowed to train new and current pilots, which will fully realize plan for preparing all the pilots to be familiarized with EGNOS System, and if so, this system will be widely and commonly used in aviation/air force. All demonstration, testing and certification flights will be in participation of scientific research center and government agency, which will guarantee the test procedure correctness in accordance to flight safety regulations and rules for new equipment on board aircrafts.
Źródło:
Archives of Transport System Telematics; 2014, 7, 1; 9-13
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Installed base of GNSS devices and total revenue of GNSS device sales in different modes of transport
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/393834.pdf
Data publikacji:
2018
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
satellite navigation system
GNSS
GNSS devices
mode of transport
system nawigacji satelitarnej
urządzenia GNSS
rodzaj transportu
Opis:
Since many years the most frequently method used for position fix in transport are global satellite navigation systems (SNS) as GPS and GLONASS and Satellite Based Augmentation System as EGNOS, GAGAN, MSAS and WAAS. Next global SNS (Galileo and BeiDou) and SBAS (SDCM) and KAAS) are under construction. The generic name given to all these mentioned above systems is Global Navigation Satellite System (GNSS). Since 2010 GNSS Market Report, edited by the European GNSS Agency (GSA), takes a comprehensive look at the global GNSS market providing detailed analysis per market segment (currently 9 segments) and application type (currently depending on segment 4, 8, 11 or 13). In order to show the different distributions of these two parameters in different continents the world was divided into six regions (European Union, Russia and Europe without European Union, North America, Asia‒Pacific, Middle East and Africa, South America and Caribbean). The distributions of installed base of GNSS device and total revenue of GNSS devices sales by region and application in selected years for all four modes of transport (area, maritime, rail and road) are presented. In these analysis new and emerging GNSS trends by all these modes and the population numbers in each region was taken into account also.
Źródło:
Archives of Transport System Telematics; 2018, 11, 3; 19-23
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer simulator of GNSS measurements
Autorzy:
Nowak, A.
Specht, C.
Powiązania:
https://bibliotekanauki.pl/articles/320456.pdf
Data publikacji:
2007
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GNSS
symulator
simulator
Opis:
This paper presents computer application which enables to simulate GNSS measurements. Some theoretical assumptions concerned presented simulator and its abilities and limitations were described, too. The paper includes also some simulation examples of satellite measurements, positioning and influences of terrain obstructions on RAIM Availability and Approximate Radial-Error Protected (ARP).
Źródło:
Annual of Navigation; 2007, 12; 65-74
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Model of Calculating Metric Tensor and GNSS-observations Errors Taking into Account Relativistic Effects
Autorzy:
Bialyk, I.
Stepanchenko, O.
Wójcik, W.
Powiązania:
https://bibliotekanauki.pl/articles/226014.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
GNSS
relativistic effects
Opis:
Study of the trajectories of the motion of satellites remains an urgent task for modern science. This is especially true for GNSS systems and for satellites intended for Earth remote sensing. The basis of their operation is to accurately determine the position of the satellite, and the parameters of signal propagation. Considering the great distances and speeds of both satellites and the Earth in calculating these parameters, it is necessary to take into account the special and general theory of relativity. In the article formulas have been derived for calculating additional corrections for relativistic effects. A mathematical model for calculating the metric tensor was created. A sequence of correction was also proposed.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 3; 379-384
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research and Development of Real-time High-precision GNSS Receivers: A Feasible Application for Surveying and Mapping in Vietnam
Autorzy:
Pham, Cong Khai
Nguyen, Gia Trong
Nguyen, Van Hai
Tran, Trong Xuan
Powiązania:
https://bibliotekanauki.pl/articles/2020209.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
GNSS/CORS
low-cost high-precision
GNSS receivers
real-time high-precision GNSS receivers
NTRIP
BD970 Trimble
ZED-F9P
GNSS
geodezja
Wietnam
Opis:
In recent years, the Global Navigation Satellite System (GNSS) has been widely applied in surveying and mapping. Currently, in Vietnam, dual-frequency GNSS receivers are quite extensively applied with the real-time kinematic (RTK) measurement technique using a continuously operating reference station network. However, high-accuracy GNSS receivers are often expensive, sometimes not meeting the needs of users for specific applications. This research develops two types of low-cost highprecision GNSS receivers for RTK positioning for different purposes. First, the millimeter precision GNSS receiver used in real-time displacement monitoring is based on Trimble's BD970 mainboard technology and some other modules. These components are interconnected according to a standard design scheme and assembled in an enclosure to form a GNSS receiver. In addition, a GNSS data transmission in the National Marine Electronics Association standard format by Networked Transport of Radio Technical Commission for Maritime Services via Internet Protocol (NTRIP) has been designed and developed. The GNSS receiver after development is loaded with program code written in the C# programming language, using the Arduino programming tool. Second, the GNSS receivers have the centimeter accuracy for RTK positioning used in surveying and mapping based on U-blox's mainboard technology and some other modules. These modules are also connected together according to a standard design scheme and assembled in an enclosure to form a complete GNSS receiver. The evaluation results show that the designed and developed GNSS receivers completely meet the requirements of surveying and mapping in coal mines in Vietnam, such as real-time monitoring of landslides, surveying and topographical mapping and other surveying works to serve the mining process.
Źródło:
Inżynieria Mineralna; 2021, 2; 391--404
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EGNOS-Based GNSS receiver for precise positioning in restricted areas
Autorzy:
Demkowicz, J.
Bikonis, K.
Powiązania:
https://bibliotekanauki.pl/articles/331610.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
EGNOS
GNSS
positioning accuracy
Opis:
Positioning accuracy is very important in many areas, whereas the typical GPS receiver accuracy is often not sufficient. The European Geostationary Navigation Overlay Service (EGNOS), Europe’s first venture into satellite navigation, improves the open public service offered by the Global Positioning System (GPS). As a satellite navigation augmentation system, EGNOS improves the accuracy of GPS by providing a positioning accuracy to within 3 meters. In this paper we present GNSS receivers based on EGNOS, dedicated for precise positioning in restricted areas of continental shelf performance. The article presents some results regarding position accuracy, obtained for a few receivers in that context.
Źródło:
Hydroacoustics; 2016, 19; 65-73
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
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