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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:
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:
Primenenie sputnikovogo komnasa dlâ obnaruženiâ GNSS-spufinga
The application of satellite compass for GNSS-spoofing detecting
Autorzy:
Dobryakova, L.
Lemieszewski, Ł.
Lusznikov, E.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/359319.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
spoofer
Spoofing
GNSS
compass
Opis:
The article discusses a new approach to the detection of GNSS spoofing, based on the use of satellite compass. Comparing the results of measurements of GNSS receivers of compass in two modes (normal mode of GNSS navigation and spoofing mode). The studies have shown, that in mode of spoofing attacks in both receivers of satellite compass we have the equality of coordinates, which in algorithm coordinate definitions, determine mathematical indeterminate form 0/0. This means getting out of the operating status of the satellite compass that can be used as an alarm “spoofing attack” to take appropriate security measures of GNSS navigation.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 37 (109); 28-33
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the application of GNSS signal repeater as a spoofer
Autorzy:
Dobryakova, L.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/360710.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
spoofer
spoofing
GNSS
repeater
Opis:
Spoofing and antispoofing algorithms have become an important research topic within the GNSS discipline. The power of the GNSS signal on the earth’s surface averages –160 dBw. While many GNSS receivers leave large space for signal dynamics, enough power space is left for the GNSS signals to be spoofed. The goal of spoofing is to provide the receiver with a misleading signal, fooling the receiver to use fake signals in space for positioning calculations. The receiver will produce a misleading position solution. The purpose of this paper is to analyze the vulnerability of the satellite signal in repeater’s output from the viewpoint of GNSS spoofing attacks. The article discusses a new approach to GNSS spoofing, based on the application of GNSS signals repeating by potential terrorists. Practical spoofing that provides misleading navigation results at the receiver is difficult to conduct due to the signal infrastructure, and by applying trivial anti-spoofing algorithms in GPS receivers, spoofing attack can be easily detected. To detect spoofing attacks of this type we have a variety of methods. For example, the authors suggest the use of paired navigators and GNSS compasses as detectors of GNSS spoofing.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 40 (112); 53-57
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic Global Navigation Satellite System antenna position verification using raw pseudorange information
Autorzy:
Dyjak, M.
Gucma, M.
Powiązania:
https://bibliotekanauki.pl/articles/135589.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Veripos System
RTK observations
GNSS verification
twin antenna
GNSS setup
precise measurement
Opis:
This article presents a method of obtaining relative and global coordinates using the Global Navigation Satellite System (GNSS). Four GNSS antennas have been compared in this research. The GNSS antennas have been utilized by the Veripos and Septentrio Systems. Global Positioning System (GPS) pseudorange observations are used to obtain relative position of the GPS antennas. Relative positions are based on calculations made by the RTKLIB software. Lever arm range and bearing are used to assess accuracy of the true antenna location relative to the vessel Navigation Reference Point (NRP). The article deals with the problem of assessing the quality of real-time positioning equipment. Comparing results of the raw position calculation with the physical measurements shows the usefulness of the real – time position monitoring.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 76-81
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cloud-based GNSS navigation spoofing detection
Autorzy:
Dobryakova, Larisa
Lemieszewski, Łukasz
Ochin, Evgeny
Powiązania:
https://bibliotekanauki.pl/articles/135509.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Cloud-based GNSS
GNSS
antiterrorism
antispoofing
transport safety
spoofer
spoofing detection algorithm
Opis:
Satellite navigation systems are commonly used to precisely determine the trajectory of transportation equipment. The widespread deployment of GNSS is pushing the current receiver technology to its limits due to the stringent demands for seamless, ubiquitous and secure/reliable positioning information. This fact is further aggravated by the advent of new applications where the miniaturized size, low power consumption and limited computational capabilities of user terminals pose serious risks to the implementation of even the most basic GNSS signal processing tasks. This paper has presented the advantage of Cloud-based GNSS Navigation, which facilitates the possibility of developing innovative applications where their particularities (e.g. massive processing of data, cooperation among users, security-related applications, etc.) make them suitable for implementation using Cloud-based infrastructure.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 57 (129); 29-37
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Presentation of Satellite Based Augmentation System integrity data in an Electronic Chart System display
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/135348.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
ECS
GNSS
SBAS
Integrity Data
MVPA
HPL
Opis:
We propose a Marine Vessel Protection Area (MVPA) model as the means of satellite-based augmentation system (SBAS) integrity data presentation in an electronic chart system (ECS) display. The model takes into account several factors that influence the shape and dimensions of the MVPA. These factors include GNSS signal aspects, where measurement errors depend on the geometry of visible satellites and the signal propagation, the ship’s size, the ship’s heading and its estimated accuracy, position of the GNSS/SBAS antenna relative to the ship’s hull, and SBAS integrity data. The resultant safety contour or domain can be displayed within the ECS or ECDIS as a graphical representation of the marine ship position and the protection level of the electronic position/course fixing equipment, equivalent to the horizontal protection level (HPL) used in aviation.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 150-156
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and analysis of spoofing detection algorithms for GNSS signals
Autorzy:
Dobryakova, L.
Lemieszewski, Ł.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/359990.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
GPS
NAVSTAR
GLONASS
Spoofing
Dual-Receiver
Opis:
Many civil GNSS (Global Navigation Satellite System) applications need secure, assured information for asset tracking, fleet management and the like. But there is also a growing demand for geosecurity locationbased services. Unfortunately, GNSS is vulnerable to malicious intrusion and spoofing. How can users be sure the information they receive is authentic? Spoofing is the transmission of matched-GNSS-signalstructure interference in an attempt to commandeer the tracking loops of a victim receiver and thereby manipulate the receiver’s timing or navigation solution. A spoofer can transmit its counterfeit signals from a stand-off distance of several hundred meters or it can be co-located with its victim. Spoofing attacks can be classified as simple, intermediate, or sophisticated in terms of their effectiveness and subtlety. In an intermediate spoofing attack, a spoofer synchronizes its counterfeit signals with the authentic GNSS signals so they are code-phase-aligned at the target receiver. In this paper we consider the anti-spoofing algorithms based on spoofing detection via Dual-Receiver.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 40 (112); 47-52
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiz algoritmov detektirovaniâ GNSS-spufinga
The analysis of the detecting algorithms of GNSS-spoofing
Autorzy:
Dobryakova, L.
Lemieszewski, Ł.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/359113.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
spoofer
spoofing
GNSS
NAVSTAR GPS
GLONASS
Galileo
BEJDOU-2
Opis:
The article discusses the new algorithms for detect of GNSS-spoofing based on a comparison of the pseudorange measurements results of navigation satellites and calculate the coordinates of a pair of GNSSreceivers in two modes: the normal GNSS-navigation and mode of the spoofing. The theoretical studies have shown that a single-antenna mode spoofing under certain conditions gives us the same measured pseudoranges. The calculated distance between the two antennas of GNSS-receivers gives us zero. In a mode of the normal GNSS-navigation computed distance between the antennas of the two GNSS-receivers exceeds the true distance to the tens of meters. These differences are used as the basic detection spoofing parameters.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 30-36
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antiterrorism : design and analysis of GNSS antispoofing algorithms
Antyterroryzm : projektowanie i analiza algorytmów antyspoofingu dla globalnych nawigacyjnych systemów satelitarnych
Autorzy:
Ochin, E.
Dobryakova, L.
Lemieszewski, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/359663.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
GPS
GLONASS
Galileo
antyterroryzm
antyspoofing
antiterrorism
anti-spoofing
Opis:
Many civil GNSS (Global Navigation Satellite System) applications need secure, assured information for asset tracking, fleet management and the like. But there is also a growing demand for geosecurity location-based services. Unfortunately, GNSS is vulnerable to malicious intrusion and spoofing. How can users be sure that the information they receive is authentic? Spoofing is the transmission of matched-GNSS-signal-structure interference in an attempt to commandeer the tracking loops of a victim receiver and thereby manipulate the receiver’s timing or navigation solution. A spoofer can transmit its counterfeit signals from a stand-off distance of several hundred meters, or it can be co-located with its victim. Spoofing attacks can be classified as simple, intermediate, or sophisticated in terms of their effectiveness and subtlety. In an intermediate spoofing attack, a spoofer synchronizes its counterfeit signals with the authentic GNSS signals, so they are code-phase-aligned at the target receiver. In this paper, authors consider the antispoofing algorithms based on finding statistical anomalies in the basic parameters of the satellite signals. At the stage of learning, the system of antispoofing explores the statistical properties of signals and at the phase of spoofing detection, the system used thresholds characteristics of statistical anomalies. The excess of the threshold characteristics provides a basis for probabilistic decision on the presence of spoofing.
Wiele cywilnych zastosowań GNSS (Globalnych Nawigacyjnych Systemów Satelitarnych) wymaga pewności, że informacje dotyczące śledzenia zasobów, zarządzania flotą itp. nie są sfałszowane. Na uwagę zasługuje także rosnący popyt na geobezpieczeństwo bazujące na usługach lokalizacji. Niestety GNSS jest podatny na preparowanie i modyfikowanie pakietów danych. Powstaje pytanie: jak użytkownicy mogą być pewni, że informacja, którą otrzymują jest autentyczna? Spoofing (ang. spoof – naciąganie, szachrajstwo) jest ingerencją w strukturę transmisji GNSS w celu modyfikacji pętli trasy odbiornika poszkodowanego, skutkiem czego jest manipulacja czasem na odbiorniku lub urządzeniem nawigacyjnym. Osoba podszywająca się może transmitować podrobiony sygnał z ukrycia w odległości do kilkuset metrów lub być współpołożona z jego ofiarą. Ataki spoofingu można zaklasyfikować jako proste, pośrednie i zaawansowane pod względem ich subtelności i efektywności. W ataku pośrednim osoba podszywająca się synchronizuje swój fałszywy sygnał z autentycznym sygnałem GNNS w taki sposób, iż następuje wyrównanie kodu–fazy dla odbiornika sygnału. W artykule przedstawiono algorytmy antyspoofingu, bazujące na znajdowaniu statystycznych anomalii w podstawowych parametrach sygnału satelitarnego. W trakcie funkcjonowania system antyspoofing bada statystyczne własności sygnałów i na etapie wykrycia spoofingu wykorzystuje charakterystyki progu anomalii. Nadmiar cech progowych stanowi podstawę do wykrycia spoofingu.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 30 (102); 93-101
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of an autonomous Global Navigation Satellite System ground station and its calibration for monitoring of local ionospheric perturbations
Autorzy:
Galas, R.
Čokrlić, M.
Powiązania:
https://bibliotekanauki.pl/articles/135456.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
local ionospheric perturbations
scintillations
single autonomous GNSS monitoring station
continuously monitoring GNSS ground systems
autonomous power management
real-time processing
hardware calibration
Opis:
A state-of-the-art monitoring global navigation satellite system (GNSS) system has been originally designed and developed for various positioning and atmosphere-sensing purposes by the authors and updated to fulfil the challenging requirements for monitoring of ionospheric perturbations. The paper discusses various scientific and technically challenging issues, such as the requirement for an autonomous operating ground GNSS station and how this can be fulfilled. Basic algorithms for monitoring of local ionospheric perturbations with GNSS receivers are described. The algorithms require that inter-frequency hardware biases be known. Although the satellite transmitter biases can be obtain from the IGS services, the user takes responsibility for the estimation of frequency dependent receiver hardware biases and for the control of their variations. The instrumental signal delays are important for timing applications and GNSS monitoring of the ionosphere and are also required for recovering of the integer carrier-phase ambiguities. The paper presents an algorithm for calibration of inter-frequency biases of global positioning system (GPS) receivers and validates the first set of results.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 54-59
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Initial analysis of the tracking performance of the GOOSE GNSS Software-Defined Receiver
Autorzy:
Galas, Roman
Kunzi, Florian
Adolfs, Marjolijn
Overbeck, Matthias
Felber, Wolfgang
Powiązania:
https://bibliotekanauki.pl/articles/1819198.pdf
Data publikacji:
2020
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
local ionospheric perturbations
scintillations
single autonomous GNSS monitoring station
continuously monitoring GNSS ground systems
autonomous power management
real-time processing
software-defined receiver
Opis:
The GOOSE (GNSS Receiver with open software interface) Software-Defined Receiver has been developed at the Fraunhofer Institute for Integrated Circuits (IIS) in Nürnberg, Germany. The main motivation for the development of this platform was to control the receiver at all stages, from digital signal processing to the PVT domain, and to enable controlled feedback to the hardware. Besides having access to all raw data including correlation values, the GOOSE receiver also enables for example tight- or ultra-tight integration with an inertial navigation system or other dead reckoning systems, as these kinds of architectures require access to the acquisition and tracking loops. In this paper, the tracking performance of the GOOSE platform was evaluated and compared to a reference receiver (Septentrio PolaRx5S). Several long data sessions were recorded on a “zero baseline” in which both receivers used the same precise geodetic antenna that was also developed at Fraunhofer IIS. The measurements were performed in a harsh environment (obstructions, multipath, possible interferences), as well as on a site with an unobstructed sky view. Quality and performance analyses were performed using raw measurements (in the domain of primary observables) of three civil GPS signals: L1CA, L2CM, and L5. The data were processed using the “zeroEdit” module of the TUB-NavSolutions academic software for education and research. The quality of the raw observables and tracking performance were described by the following parameters: number of cycle slips detected, number of un-correctable cycle slips, number of loss of locks of the signals, number of single epoch data gaps, and the length of carrier phase arcs. The presentation is illustrated with some numerical examples.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 63 (135); 113-120
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Motion-based consistency audit of onboard Global Navigation Satellite System reference as reported by static Automatic Identification System data
Autorzy:
Banyś, P.
Heymann, F.
Engler, E.
Noack, T.
Powiązania:
https://bibliotekanauki.pl/articles/135100.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
AIS
GNSS reference antenna
motion pattern
turn
velocity
heading
hull
Opis:
The Automatic Identification System (AIS) is widely used for reporting vessel movements and broadcasting additional information related to the current voyage or constant parameters like the IMO number or the overall dimension of the hull. Since dynamic AIS data is shared mostly without human interaction, and is not flawless, the static AIS content edited manually is vulnerable to human error. This work introduces a simple vessel motion pattern approach that determines the probable foredeck/afterdeck location of the GNSS reference used by the AIS transponder, and compares it to the hull parameters obtained from the static AIS data, to find observable errors in the static AIS configuration of the mount point of the GNSS reference antenna.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 49-56
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The vulnerability of unmanned vehicles to terrorist attacks such as Global Navigation Satellite System spoofing
Autorzy:
Dobryakova, L.
Lemieszewski, Ł.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/135170.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
navigation
jammer
jamming
anti-jamming
spoofer
spoofing
anti-spoofing
repeater
Opis:
Spoofing, anti-spoofing, jamming, and anti-jamming algorithms have become an important research topic within the Global Navigation Satellite System (GNSS) discipline. While many GNSS receivers leave large space for signal dynamics, enough power space is left for the GNSS signals to be spoofed. GNSS signal power on the earth’s surface is around 160 dBW. The goal of spoofing is to provide the receiver with a slightly more powerful misleading signal, stronger than the original GNSS signal, fooling the receiver into using fake signals for positioning calculations. The receiver will generate a misleading position of the navigator. Practical spoofing that provides misleading navigation results of the receiver is difficult to conduct due to the signal infrastructure. Using trivial anti-spoofing algorithms in GNSS receivers, spoofing attacks can be easily detected. The article discusses the vulnerability of unmanned vehicles and provides an approach to anti-spoofing based on measuring distance between two antennas.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 181-188
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protecting vehicles vulnerable to terrorist attacks, such as GNSS jamming, by electromagnetic interference shielding of antenna
Autorzy:
Dobryakova, L.
Lemieszewski, Ł.
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/135431.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
GNSS
navigation
jammer
jamming
anti-jamming
spoofer
spoofing
anti-spoofing
repeater
Opis:
Spoofing, anti-spoofing, jamming and anti-jamming technologies have become an important research topic within the GNSS discipline. While many GNSS receivers leave a large space for signal dynamics, enough power space is left for the GNSS signals to be spoofed and/or jammed. The goal of spoofing is to provide the receiver with a misleading signal, fooling the receiver into using fake signals in the extra space for positioning calculations. The receiver will then generate a false position, thus misleading the navigator. The goal of jamming is to add noise to the satellite signal which leads to fooling the receiver into using “signals plus noise” for positioning calculations. This article discusses the approach to anti-jamming based on the shielding of antennas from the signal jammer.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 50 (122); 77-83
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

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