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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2013 Vol. 7, no. 2 199--204
EN The performance of tightly coupled GNSS/INS integration is known to be better than that of loosely coupled GNSS/INS integration. However, if the time synchronization error occurs between the GNSS receiver and INS(Inertial Navigation System), the situation reverses. The performance of loosely coupled[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
EN In this paper, we describe the software design results of WA‐DGNSS reference station that will be constructed in Korea in the near future. Software design of the WRS (Wide area Reference Station) is carried out by applying object oriented software methodology in order to provide flexibilities: easy [...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2011 Vol. 5, no. 2 213--221
EN This paper intends to provide results from “EGNOS Performance Improvement in Southern Latitudes” (EPISOL) project. EPISOL is performed by the Greek company GEOTOPOS S.A. under a con-tract with the European Space Agency (ESA). EPISOL project aims at analysing, testing and validating the European SBAS[...]
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Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
2014 nr 5 116--123
PL Opisano szczegóły modernizacji dwóch nawigacyjnych systemów satelitarnych (NSS), GPS i GLONASS, zmiany w ich segmencie kosmicznym i naziemnym, dwa NSS, Galileo i BeiDou, znajdujące się w budowie, dwa nowe satelitarne systemy wspomagające (SBAS), SDCM i GAGAN. Omówiono problem kompatybilności i międz[...]
EN The details about two Satellite Navigation Systems (SNS), GPS and GLONASS modernization progressing, the changes in their spatial and terrestrial segments, two new global SNS, Galileo and BeiDou under construction, two new Satellite Based Augmentation Systems (SBAS), SDCM and GAGAN, the problem of c[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2008 Vol. 2, no. 4 345--350
EN In Polish aviation on-board GPS units are used for enroute procedures mainly. The use of GNSS for approach and landing procedures requires overcoming a lot of obstructions, including both organizational and technical ones. The paper presents information connecting with GNSS implementation in aviatio[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
EN The General Lighthouse Authorities (UK & Ireland) DGPS service came into operation in 1998. In common with other maritime DGPS services the equipment will need replacement over the next few years, in fact computing and communications equipment have already been replaced. Replacement of existing hard[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2014 Vol. 8, no. 3 343--350
EN A number of public codes exist for GPS positioning and baseline determination in off-line mode. However, no software code exists for DGPS exploiting correction factors at base stations, without relying on double difference information. In order to accomplish it, a methodology is introduced in MATLAB[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2016 Vol. 10, no. 3 389--393
EN The paper presents the processing of EGNOS integrity data received either directly from the satellite network or the Sisnet internet relay. Relationship between the individual frames in EGNOS messages has been described. Usefulness of these data was indicated by the three examples. In the first exam[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2018 Vol. 12, no. 4 649--656
EN GNSS spoofing is an intentional and malicious action aimed at degrading and suppressing GNSS Positioning, Navigation, and Timing (PNT) services. Since it affects data and information segment of GNSS, it is considered a GNSS information (cyber‐) security attack. Considering a significant and powerful[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2019 Vol. 13, no. 3 581--586
EN The operating zone of a radio navigation system is one of its main operating features. It determines the size of a water body in which the system can be used, while guaranteeing vessels’ navigation safety. The DGPS system in the LF/MF range is now the basic positioning system in coastal waters aroun[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2019 Vol. 13, no. 3 587--590
EN Pseudo-Random Noise (PRN) Gold code was selected for utilisation as the Global Navigation Satellite System (GNSS) pseudo-range measurement code sequence. Recent studies revealed a potential security vulnerability issue due to the Gold PRN code utilisation in a GNSS-related cyber-attack known as GNSS[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2019 Vol. 13, no. 3 575--579
EN 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[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2018 Vol. 12, no. 4 663--670
EN Satellite navigation gains importance in sustainable development of modern civilisation. With the increasing number of GNSS-based technology and socio-economic systems and services, satellite navigation has become an essential component of national infrastructure. This calls for novel requirements o[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2018 Vol. 12, no. 4 657--661
EN Geodetic network GNSS receivers are more commonly associated with positioning systems used in maritime hydrography. In terms of positioning accuracy when no terrain obstacles are present, they meet international hydrographic surveys standards (S‐44) fully. Those standards are defined as 1m (0.95) fo[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2009 Vol. 3, no. 3 283--286
EN This paper presents an experiment involving the processing of observations using the GPS and GPS/GLONASS systems performed at the BOGO, BOGI, and JOZ2 IGS stations. Due to the small number of GLONASS satellites, the authors failed to receive any significant improvement in positioning accuracy using [...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2009 Vol. 3, no. 3 287--291
EN Galileo is the European Global Navigation Satellite System, under civilian control. Galileo will provide their users with highly accurate global positioning services and their associated integrity information. The main objective of this article is to explain the basis of the Galileo integrity concep[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2010 Vol. 4, no. 3 295--299
EN The authors have analyzed the effect of measurement duration on the accuracy of ship’s hori-zontal (2D) position obtained by GPS and GPS/EGNOS receivers. Also, the influence of measurement dura-tion on the mean position determination error in relation to a reference (geodetic) position has been exam[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
EN A lightering operation is a type of Ship-To-Ship (STS) operation where two ships are together in open waters and transfer the cargo e.g. crude oil, LNG. High skills and experience are required by the human operators as no relevant equipment for determining the relative speeds and distances with suff[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
EN Some new techniques and functionality adopted for modernization of national DGPS systems by maritime administrations in Europe are presented. Any solution adopted must meet international requirements: IMO standards and IALA e-NAV Committee recommendations. The results of DGPS Re-capitalization Meeti[...]
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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
2013 Vol. 7, no. 3 389--392
EN The paper deals with use the satellite navigation system for increase safety of navigation in difficult areas. There have been presented an algorithm to ship control procedure during environmental disturbances in narrow passages.
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