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EDM calibration and finding errors in the baseline / D. C. Annunciation in SaLIS Surveying and land information science, vol 72 n° 4 (December 2012)

Public [article]  inSaLIS Surveying and land information science > vol 72 n° 4 (December 2012) . - pp 189 - 193 Titre : EDM calibration and finding errors in the baseline Type de document : Article/Communication Auteurs : D. C. Annunciation, Auteur ; C. J. Blitz, Auteur ; T. J. Brown, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 189 - 193 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Nivellement [Termes IGN] altimétrie [Termes IGN] étalonnage d'instrument [Termes IGN] modèle numérique de surface [Termes IGN] station Résumé : (Auteur) This paper describes the methodology used to calibrate a set of six total stations over a typical NGS Calibrated Baseline (CBL), together with the results obtained. The methodology was extended to allow for the correction of some additional systematic errors in the EDM. It is presented to allow others to examine the processes used, and possibly adopt them for their own use when calibrating EDM over an NGS CBL. The measurements indicated that the 0 m point on the CBL had moved from its calibrated location by approximately 0.007 m (7 mm). Examination of the ground mark indicated a significant gouge on the brass plaque, consistent with an impact from a snow-clearing blade. This suggests that while the concrete remained intact, the brass plaque was deformed by the impact, and the zero point moved 0.007 m, lengthening lines connecting to the 0 m mark. Numéro de notice : A2004-394 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73868 [article]

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