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Retrieval of significant wave height and mean sea surface level using the GNSS-R interference pattern technique : results from a three-month field campaign / Alberto Alonso-Arroyo in IEEE Transactions on geoscience and remote sensing, vol 53 n° 6 (June 2015)
[article]
Titre : Retrieval of significant wave height and mean sea surface level using the GNSS-R interference pattern technique : results from a three-month field campaign Type de document : Article/Communication Auteurs : Alberto Alonso-Arroyo, Auteur ; Adriano Camps, Auteur ; Hyuk Park, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 3198 - 3209 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Espagne
[Termes IGN] hauteurs de mer
[Termes IGN] interférence
[Termes IGN] niveau moyen des mers
[Termes IGN] océanographie spatiale
[Termes IGN] positionnement par GNSS
[Termes IGN] réflectométrie par GNSS
[Termes IGN] vagueRésumé : (Auteur) Since 1993, when the European Space Agency (ESA) proposed the use of Global Navigation Satellite Systems reflected signals for sea mesoscale altimetry, a wide range of applications have appeared. This paper focuses on the retrieval of significant wave height (SWH) and the mean sea surface level (MSSL) from a ground-based experiment using the interference pattern technique (IPT). Two different observables on the IPT are analyzed: the oscillation frequency and the angle where coherency is lost. The point where coherency in the reflection process is lost can be related to the Rayleigh criterion for smooth surfaces and helps to determine the SWH. Spectral analysis on the interference pattern helps to determine the MSSL. A three-month field campaign was performed on the “Pont del Petroli” pier, Badalona, Spain, to see how the reflected GNSS signals were affected by coastal sea state and check previous assumptions. Results from this field experiment are shown, confirming that the SWH can be retrieved with accuracy of 6 cm and the MSSL with 4 cm. Estimations of both parameters are obtained every 30 min approximately. Numéro de notice : A2015-284 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2014.2374218 Date de publication en ligne : 18/12/2014 En ligne : https://doi.org/10.1109/TGRS.2014.2374218 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76401
in IEEE Transactions on geoscience and remote sensing > vol 53 n° 6 (June 2015) . - pp 3198 - 3209[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2015061 SL Revue Centre de documentation Revues en salle Disponible Local GNSS monitoring / A. Guilloton in Navigation aérienne, maritime, spatiale, terrestre, vol 62 n° 247 (mai 2015)
[article]
Titre : Local GNSS monitoring Type de document : Article/Communication Auteurs : A. Guilloton, Auteur ; B. Montagne, Auteur Année de publication : 2015 Article en page(s) : pp 26 - 35 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] Global Navigation Satellite System
[Termes IGN] interférence
[Termes IGN] qualité du signal
[Termes IGN] signal GNSSRésumé : (Auteur) [Introduction] Nowadays, GPS are used in many applications such as GBAS, SBAS, EGNOS and WAAS aircraft landing systems, unmanned road or aerial vehicles, wireline and wireless telecommunications networks, financial trading, electricity generation and supply, telematics insurance, tracking of assets, fleet vehicles and people, road user charging, geofenced applications... etc. GPS applications are vulnerable to jamming and spoofing, the former being intentional or not. [...] Numéro de notice : A2015-458 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77151
in Navigation aérienne, maritime, spatiale, terrestre > vol 62 n° 247 (mai 2015) . - pp 26 - 35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 094-2015021 RAB Revue Centre de documentation En réserve L003 Disponible From Data Schemes to Supersonic Codes : GNSS Authentication for Modernized Signals / Oscar Pozzobon in Inside GNSS, vol 10 n° 1 (January - February 2015)
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Titre : From Data Schemes to Supersonic Codes : GNSS Authentication for Modernized Signals Type de document : Article/Communication Auteurs : Oscar Pozzobon, Auteur ; Giovanni Gamba, Auteur ; Matteo Canale, Auteur ; et al., Auteur Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] authentification
[Termes IGN] leurrage
[Termes IGN] signal GNSSRésumé : (auteur) The problem of GNSS signal authentication is expected to draw ever more attention in an operational environment that poses a growing risk — and consequences — for “spoofing” attacks. A team of researchers present an overview of the requirements and methods for verifying the authenticity of the signals and introduce a novel scheme for authentication of open GNSS signals using supersonic codes. Numéro de notice : A2015-256 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/4370 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76290
in Inside GNSS > vol 10 n° 1 (January - February 2015)[article]A comparative analysis of low-level radio frequency interference in SMOS and Aquarius microwave radiometer measurements / Mustafa Aksoy in IEEE Transactions on geoscience and remote sensing, vol 51 n° 10 (October 2013)
[article]
Titre : A comparative analysis of low-level radio frequency interference in SMOS and Aquarius microwave radiometer measurements Type de document : Article/Communication Auteurs : Mustafa Aksoy, Auteur ; Joel T. Johnson, Auteur Année de publication : 2013 Article en page(s) : pp 4983 - 4992 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse comparative
[Termes IGN] image SAC-D-Aquarius
[Termes IGN] image SMOS
[Termes IGN] interférence
[Termes IGN] polarimétrie radar
[Termes IGN] télédétection en hyperfréquence
[Termes IGN] température de luminanceRésumé : (Auteur) Measurements of both the Soil Moisture and Ocean Salinity (SMOS) and Aquarius L-band microwave radiometers show a significant presence of radio frequency interference (RFI), although they operate in a protected frequency band where transmission is prohibited. RFI detection and mitigation remain a challenging problem for both missions, especially for low or moderate (i.e., on the order of 10 K or less) amplitude contributions. An algorithm for low-level source detection and mitigation is already included in Aquarius data sets, and both Aquarius and SMOS have distinct attributes that can potentially enable further improvements in detection and mitigation of these sources to some degree. The combination of SMOS and Aquarius data sets may enable further future improvements as well. Initial efforts toward this goal are reported in this paper. Similarities and differences in RFI effects on SMOS and Aquarius are examined, with a particular focus on instrument properties that cause differences in received RFI power in SMOS and Aquarius observations of a specific source. A study is also performed of SMOS observations for regions reported by Aquarius to contain “low-level” RFI. It is shown that the detection of these sources in the SMOS data set is challenging and that the dependence of the SMOS third and fourth Stokes parameters on incidence angle makes the polarimetric features of SMOS difficult to utilize for low-level source detection. However, an angular fitting procedure suggested previously in the literature can, in some cases, detect such sources in horizontal and vertical polarizations. Numéro de notice : A2013-602 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2013.2266278 En ligne : https://doi.org/10.1109/TGRS.2013.2266278 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32738
in IEEE Transactions on geoscience and remote sensing > vol 51 n° 10 (October 2013) . - pp 4983 - 4992[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2013101 RAB Revue Centre de documentation En réserve L003 Disponible Correction and characterization of radio frequency interference signatures in L-band synthetic aperture radar data / Franz J. Meyer in IEEE Transactions on geoscience and remote sensing, vol 51 n° 10 (October 2013)
[article]
Titre : Correction and characterization of radio frequency interference signatures in L-band synthetic aperture radar data Type de document : Article/Communication Auteurs : Franz J. Meyer, Auteur ; Jeremy B. Nicoll, Auteur ; Anthony P. Doulgeris, Auteur Année de publication : 2013 Article en page(s) : pp 4961 - 4972 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] bande L
[Termes IGN] étalonnage spectral
[Termes IGN] image radar moirée
[Termes IGN] interférenceRésumé : (Auteur) Radio frequency interference (RFI) is a known issue in low-frequency radar remote sensing. In synthetic aperture radar (SAR) image processing, RFI can cause severe degradation of image quality, distortion of polarimetric signatures, and an increase of the SAR phase noise level. To address this issue, a processing system was developed that is capable of reliably detecting, characterizing, and mitigating RFI signatures in SAR observations. In addition to being the basis for image correction, the robust RFI-detection algorithms developed in this paper are used to retrieve a wealth of RFI-related information that allows for mapping, characterizing, and classifying RFI signatures across large spatial scales. The extracted RFI information is expected to be valuable input for SAR-system design, sensor operations, and the development of effective RFI-mitigation strategies. The concepts of RFI detection, analysis, and mapping are outlined. Large-scale RFI mapping results are shown. In case studies, the benefit of detailed RFI information for customized RFI filtering and sensor operations is exemplified. Numéro de notice : A2013-601 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2013.2252469 En ligne : https://doi.org/10.1109/TGRS.2013.2252469 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32737
in IEEE Transactions on geoscience and remote sensing > vol 51 n° 10 (October 2013) . - pp 4961 - 4972[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2013101 RAB Revue Centre de documentation En réserve L003 Disponible Narrow-band interference suppresion for SAR based on independent component analysis / Feng Zhou in IEEE Transactions on geoscience and remote sensing, vol 51 n° 10 (October 2013)PermalinkSuperresolution multitarget parameter estimation in MIMO radar / Kai Luo in IEEE Transactions on geoscience and remote sensing, vol 51 n° 6 Tome 2 (June 2013)PermalinkSpoofs, proofs & jamming: Towards a sound national policy for civil location and time assurance / L. Scott in Inside GNSS, vol 7 n° 5 (September - October 2012)PermalinkESA's Soil Moisture and Ocean Salinity mission : mission performance and operations / S. Mecklenburg in IEEE Transactions on geoscience and remote sensing, vol 50 n° 5 Tome 1 (May 2012)PermalinkA first set of techniques to detect radio frequency interferences and mitigate their impact on SMOS data / R. Castro in IEEE Transactions on geoscience and remote sensing, vol 50 n° 5 Tome 1 (May 2012)PermalinkInterference & Einstein: GNSS update / Huibert-Jan Lekkerkerk in Geoinformatics, vol 15 n° 1 (01/01/2012)PermalinkHigh-precision GNSS receivers / N. Blanco-Delgado in GIM international, vol 25 n° 11 (November 2011)PermalinkInterference suppression algorithm for SAR based on time-frequency transform / S. Zhang in IEEE Transactions on geoscience and remote sensing, vol 49 n° 10 Tome 1 (October 2011)PermalinkBroadband versus GPS / Huibert-Jan Lekkerkerk in Geoinformatics, vol 14 n° 5 (01/07/2011)PermalinkThe civilian battlefield protecting GNSS receivers from interference and jamming / M. Jones in Inside GNSS, vol 6 n° 2 (March - April 2011)Permalink