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Master Thesis

Mise à jour d’une chaîne globale d’intégration de données topographiques dans un Système d’Information Géographique : amélioration des prestations topographiques au regard de la réforme DT-DICT

Abstract : Knowledge of the underground has become paramount as a consequence of various recent mishaps. Consequently, with the new DT-DICT act, the state has set stringent limits on the error affecting the location of underground assets. This act has burdened local governments with further duties and responsibilities. In order to meet the requirements of the DT-DICT act, a city must not only maintain a very precise topographic grid relative to which the measurements can be made, but also ensure that all the surveyed items have been properly registered into its database. This dissertation deals with these two different issues. In the first place, we assess the precision of Bourg-en-Bresse’s topographical grid, and discuss the additional bias caused by the translation of the reference points’ coordinates from the old national reference system (Lambert II) into the new one (Lambert 93). Next, we introduce a new charter with redesigned graphic rules for easing the feeding of data collected by subcontractors, such as land surveyors, into the city’s GIS, which has increasingly been used as a reference data provider by the various services. Both actions should lead to an increase in quality of the GIS data, and therefore bolster the use of the city’s GIS still further.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01339118
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Submitted on : Wednesday, June 29, 2016 - 3:39:07 PM
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Michaël Prévieu. Mise à jour d’une chaîne globale d’intégration de données topographiques dans un Système d’Information Géographique : amélioration des prestations topographiques au regard de la réforme DT-DICT. Sciences de l'ingénieur [physics]. 2015. ⟨dumas-01339118⟩

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