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The possibility of measuring the dynamic response of structures using non-contact geodetic method / Bostjan Kovacic in Geodetski vestnik, vol 63 n° 1 (March - May 2019)  

Public [article]  inGeodetski vestnik > vol 63 n° 1 (March - May 2019) . - pp 57 - 72 Titre : The possibility of measuring the dynamic response of structures using non-contact geodetic method Type de document : Article/Communication Auteurs : Bostjan Kovacic, Auteur ; Tomaž Motoh, Auteur Année de publication : 2019 Article en page(s) : pp 57 - 72 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Topographie [Termes IGN] analyse spectrale [Termes IGN] auscultation d'ouvrage [Termes IGN] génie civil [Termes IGN] oscillation [Termes IGN] pont [Termes IGN] Python (langage de programmation) [Termes IGN] tachéomètre électronique [Termes IGN] topométrie de précision [Termes IGN] transformation rapide de Fourier Résumé : (Auteur) Building construction is the subject of various factors and their consequences must be regularly monitored; this can be carried out in the form of control measurements or monitoring. This article aims to show the usability of geodetic non-contact methods in defining the dynamic response of structures. The lamella on which various methods for monitoring the dynamic response was used for simulation; the emphasis is on a modern geodetic method using a Robotic Total Station (RTS). To determine the dynamic response, the algorithm for the determination of the harmonic oscillation´s average amplitude and the methods of the spectral analysis of the sampled data is further described. The results obtained with the RTS method have shown a high level of reliability for the determination of dynamic response. Numéro de notice : A2019-166 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.15292/geodetski-vestnik.2019.01.57-72 Date de publication en ligne : 06/01/2019 En ligne : http://dx.doi.org/10.15292/geodetski-vestnik.2019.01.57-72 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92575 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
139-2019011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

GNSS ionospheric TEC and positioning accuracy during intense space and terrestrial weather events in B&H / Randa Natraš in Geodetski vestnik, vol 63 n° 1 (March - May 2019)  

Public [article]  inGeodetski vestnik > vol 63 n° 1 (March - May 2019) . - pp 73 - 91 Titre : GNSS ionospheric TEC and positioning accuracy during intense space and terrestrial weather events in B&H Type de document : Article/Communication Auteurs : Randa Natraš, Auteur ; Dževad Krdžalić, Auteur ; Džana Horozović, Auteur ; et al., Auteur Année de publication : 2019 Article en page(s) : pp 73 - 91 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes IGN] Bosnie-Herzégovine [Termes IGN] ionosphère [Termes IGN] neige [Termes IGN] positionnement par GNSS [Termes IGN] positionnement ponctuel précis [Termes IGN] positionnement statique [Termes IGN] précision du positionnement [Termes IGN] tempête magnétique [Termes IGN] teneur totale en électrons [Termes IGN] troposphère Résumé : (Auteur) To achieve the high accuracy in GNSS positioning, the various atmospheric effects on GNSS signals need to be mitigated, where the major part present the ionised atmosphere (ionosphere) and the neutral atmosphere (troposphere). Additional signal scattering can occur from heavy precipitation and from snow accumulation on the antenna and on its surroundings. In this study, irregularities in the ionosphere induced by space weather were analysed, as well as sudden snowfall with its impact on meteorological conditions in the troposphere. State in the ionosphere was characterised by total electron content (TEC) derived from GNSS observation of EUREF Permanent Network (EPN) station SRJV in Bosnia and Herzegovina (B&H). Their impacts on the accuracy of GNSS positioning of the EPN station SRJV were examined by applying post-processing static PPP and network solutions using several software (the open-source and commercial). The study period was March 2015, when the strongest geomagnetic storm of solar cycle 24 (St. Patrick’s Day, March 17) and sudden intense snowfall (beginning of the month) occurred. Ionospheric TEC deviated for more than 20 TECU from the regular values during St. Patrick´s Day. Ionosphere-free combination in applied positioning techniques successfully eliminated most of the ionospheric terms. The highest deviations in Up component (to 7 cm) were observed during sudden snowfall characterised by changes in temperature, atmospheric pressure and humidity in the troposphere. Numéro de notice : A2019-167 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.15292/geodetski-vestnik.2019.01.73-91 Date de publication en ligne : 17/01/2019 En ligne : http://dx.doi.org/10.15292/geodetski-vestnik.2019.01.73-91 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92576 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
139-2019011	RAB	Revue	Centre de documentation	En réserve L003	Disponible