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Robust acquisition at GPS receivers in unsafe locations using complex wavelet transform / M. Moazedi in Survey review, vol 51 n° 369 (November 2019)  

Public [article]  inSurvey review > vol 51 n° 369 (November 2019) . - pp 514 - 524 Titre : Robust acquisition at GPS receivers in unsafe locations using complex wavelet transform Type de document : Article/Communication Auteurs : M. Moazedi, Auteur ; Mohammad-Reza Mosavi, Auteur ; A. Sadr, Auteur Année de publication : 2019 Article en page(s) : pp 514 - 524 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes descripteurs IGN] anti-leurrage [Termes descripteurs IGN] interférence [Termes descripteurs IGN] méthode robuste [Termes descripteurs IGN] récepteur GPS [Termes descripteurs IGN] signal GPS [Termes descripteurs IGN] transformation en ondelettes Résumé : (auteur) Growing importance of Global Positioning System (GPS) applications in various fields, leads many researches to the security of GPS systems and investigation of eventual perturbations in them. One of the most important intentional interferences is spoofing. This work presents an anti-spoofing method based on complex wavelet transform (CWT). Fake satellites are omitted and then understrength satellites due to spoofing are identified. The results of investigation suggest that the proposed CWT based estimation and extraction method is better than relatively simple wavelet transform. The suggested filter is applied in the Intermediate Frequency signal. Cross-validation technique is used for automatically identifying wavelet signal layers. The proposed method has been implemented on different collected datasets. Software GPS Receiver has been used to implement and validate the developed anti-spoofing technique because it is more flexible and economical compared with usual hardware receivers. Numéro de notice : A2019-573 Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2018.1483597 date de publication en ligne : 18/06/2018 En ligne : https://doi.org/10.1080/00396265.2018.1483597 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94449 [article]

Consumer mass market accelerometers for GNSS anti-spoofing / Sherman Lo in Inside GNSS, vol 12 n° 5 (September - October 2017)  

Public [article]  inInside GNSS > vol 12 n° 5 (September - October 2017) . - pp 62 - 71 Titre : Consumer mass market accelerometers for GNSS anti-spoofing Type de document : Article/Communication Auteurs : Sherman Lo, Auteur ; Yu-Hsuan Chen, Auteur ; Tyler Reid, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 62 - 71 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes descripteurs IGN] accéléromètre [Termes descripteurs IGN] anti-leurrage [Termes descripteurs IGN] centrale inertielle [Termes descripteurs IGN] détection de leurrage [Termes descripteurs IGN] GNSS-INS Résumé : (auteur) This article presents a novel GNSS spoofing detection method via direct comparison of acceleration using commercial inertial sensors. The developed concept allows for comparison of the two sensors without coupling GNSS with an inertial measurement unit (IMU). The design provides a robust, steady state spoof detection capability that can be developed as an add-on to existing receivers. Collected flight test data is used to show that executive monitors (EMs) successfully yielded spoof detection capabilities as well as the ability to limit false alerts. While many more flights will be needed to validate performance results, fast detection ( Numéro de notice : A2017-587 Thématique : POSITIONNEMENT Nature : Article En ligne : http://www.insidegnss.com/node/5619 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86719 [article]

A fresh look at GNSS anti-jamming / Daniele Borio in Inside GNSS, vol 12 n° 5 (September - October 2017)  

Public [article]  inInside GNSS > vol 12 n° 5 (September - October 2017) . - pp 54 - 61 Titre : A fresh look at GNSS anti-jamming Type de document : Article/Communication Auteurs : Daniele Borio, Auteur ; Pau Closas, Auteur Année de publication : 2017 Article en page(s) : pp 54 - 61 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal [Termes descripteurs IGN] anti-leurrage [Termes descripteurs IGN] brouillage [Termes descripteurs IGN] estimation de position [Termes descripteurs IGN] interférence [Termes descripteurs IGN] méthode robuste [Termes descripteurs IGN] mitigation [Termes descripteurs IGN] signal GNSS Résumé : (auteur) Although strong jamming can overwhelm much weaker GNSS signals, receiver performance can be significantly improved by implementing interference mitigation techniques. With this article we briefly discuss the most common approaches for interference mitigation and frame them with respect to the principles of Interference Cancellation (IC) and robust estimation. Additionally, we present initial results obtained using Robust Transform Domain (RTD) mitigation techniques. These techniques provide effective alternatives to Transform Domain excision, enabling receiver operations in the close proximity of a jammer. Numéro de notice : A2017-583 Thématique : POSITIONNEMENT Nature : Article En ligne : http://www.insidegnss.com/node/5618 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86718 [article]

Codeless code tracking of the Galileo E1 PRS / Cillian O'Driscoll in Inside GNSS, vol 12 n° 2 (March - April 2017)  

Public [article]  inInside GNSS > vol 12 n° 2 (March - April 2017) . - pp 60 - 68 Titre : Codeless code tracking of the Galileo E1 PRS Type de document : Article/Communication Auteurs : Cillian O'Driscoll, Auteur ; James T. Curran, Auteur Année de publication : 2017 Article en page(s) : pp 60 - 68 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal [Termes descripteurs IGN] anti-leurrage [Termes descripteurs IGN] qualité du signal [Termes descripteurs IGN] signal Galileo Résumé : (auteur) Code/subcarrier divergence in high order BOC signals is investigated on the Galileo E1 PRS signal. The authors introduce “codeless code tracking” as a potential means for future quality monitoring or as the basis for a high-accuracy PRS-based anti-spoofing mechanism. Numéro de notice : A2017-257 Thématique : POSITIONNEMENT Nature : Article En ligne : http://www.insidegnss.com/node/5401 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85273 [article]

Double take : mitigating interference with a dual-polarized antenna array in a real environment / Matteo Sgammini in GPS world, vol 28 n° 2 (February 2017)

Public [article]  inGPS world > vol 28 n° 2 (February 2017) . - pp 66 - 72 Titre : Double take : mitigating interference with a dual-polarized antenna array in a real environment Type de document : Article/Communication Auteurs : Matteo Sgammini, Auteur ; Stefano Caizzone, Auteur ; Achim Hornbostel, Auteur ; Michael Meurer, Auteur Année de publication : 2017 Article en page(s) : pp 66 - 72 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes descripteurs IGN] antenne [Termes descripteurs IGN] anti-leurrage [Termes descripteurs IGN] interférence [Termes descripteurs IGN] méthode robuste [Termes descripteurs IGN] polarisation [Termes descripteurs IGN] récepteur GPS Résumé : (Auteur) [Introduction] The rapid growth of the wireless telecommunication sector and, consequently, the high demand of spectrum assigned to the new services make the frequency spectrum very crowded and quite saturated. With the weak received signal power of GNSS signals, spurious harmonics from other systems can cause unintentional interference and, therefore, a serious problem to the reliable estimation of user position, velocity and time (PVT). Besides unintentional interference, more virulent intentionally radiated signals, called jammers, may knock out the GNSS receiver; this is especially the case when a jammer with high time-frequency dynamics (such as a chirp-like jammer) affects the GNSS signal spectrum. Whether unintentional or intentional, interference represents a serious threat to GNSS in applications ranging from safety-of-life to critical sectors like law enforcement, transportation, communication and finance. In such critical applications, it is important that the GNSS receiver provides a minimum level of reliability and robustness, even at the cost of increased price and complexity. To meet this need, some manufacturers and research institutions have been developing GNSS receivers equipped with anti-jamming capabilities. In this article, we propose a novel approach to interference mitigation. [...] Numéro de notice : A2017-289 Thématique : POSITIONNEMENT Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85324 [article]

Straight talk on anti-spoofing: securing the future of PNT / K. Wesson in GPS world, vol 23 n° 1 (January 2012)

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Keeping the spoofs out: signal authentication services for future GNSS / Oscar Pozzobon in Inside GNSS, vol 6 n° 3 (May - June 2011) 

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The civilian battlefield protecting GNSS receivers from interference and jamming / M. Jones in Inside GNSS, vol 6 n° 2 (March - April 2011)    

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Spoofing detection and mitigation with a moving handheld receiver / J. Nielsen in GPS world, vol 21 n° 9 (September 2010)

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The GPS assimilator: Upgrading receivers via benign spoofing / T. Humphreys in Inside GNSS, vol 5 n° 4 (June 2010) 

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Signal authentication: a secure civil GNSS for today / S. Lo in Inside GNSS, vol 4 n° 5 (September - October 2009) 

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GPS : Theory, algorithms and applications / Guochang Xu (2003)

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Genauigkeitssteigerung bei kurzzeit-statischen und kinematischen Satellitenmessungen bis hin zur Echtzeitanwendung / M. Gianniou (1996)

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Les récepteurs GPS pour la topographie / Françoise Duquenne in Géomètre, vol 1995 n° 8-9 (août - septembre 1995)

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Ambiguity resolution techniques in geodetic and geodynamic applications of the Global Positioning System / L. Mervart (1995)  

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