ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprs-archives-XLVI-M-1-2021-87-2021 GNNS CONTROL NETWORK SUPPORTING LARGE HISTORICAL BUILDING ARCHITECTURAL SURVEY Bonora V. 1 Maseroli R. 1 Mugnai F. 1 Tucci G. 1 Department of Civil and Environmental Engineering, University of Florence, via di S.Marta, 3 - 50139 Firenze, Italy 28 08 2021 XLVI-M-1-2021 87 91 Copyright: © 2021 V. Bonora et al. 2021 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-archives.copernicus.org/articles/isprs-archives-XLVI-M-1-2021-87-2021.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/isprs-archives-XLVI-M-1-2021-87-2021.pdf

The paper points the attention to some hidden parts of metric surveys, that usually are not enough documented in scientific papers but in technical reposts. Reporting encountered challenges and discussing identified technical solutions and methodologies to overcome bottlenecks and operative issues, highlights the novelty of the presented experience from a technical viewpoint. The overall approach has been reported taking care of describing technical details and present case study’s implementation of the applied techniques. Integrating GNSS control Networks and topographic tools to design, implement and perform a rigorous topographic survey methodology in describing built heritage, which is one of the modern geomatics’ advancements, has been depicted. An ad hoc datum has been designed to guarantee a clear compliance both to cartographic standards and architectural representations in 1:50 to 1:100 graphical output scale.