The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XXXVIII-3/W22
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-3/W22, 155–160, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-3-W22-155-2011
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-3/W22, 155–160, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-3-W22-155-2011

  26 Apr 2013

26 Apr 2013

ESTIMATION OF SOLAR RADIATION ON BUILDING ROOFS IN MOUNTAINOUS AREAS

G. Agugiaro1, F. Remondino1, G. Stevanato2, R. De Filippi3, and C. Furlanello3 G. Agugiaro et al.
  • 13D Optical Metrology Unit, Fondazione Bruno Kessler, Trento, Italy
  • 2Dept. of Architecture, Urban Modelling and Surveying, University of Padova, Italy
  • 3Predictive Models for Biomedicine & Environment Unit, Fondazione Bruno Kessler, Trento, Italy

Keywords: Photovoltaic potential, 3D buildings, Data integration, GRASS GIS, Photogrammetry, LiDAR, Terrain modelling

Abstract. The aim of this study is estimating solar radiation on building roofs in complex mountain landscape areas. A multi-scale solar radiation estimation methodology is proposed that combines 3D data ranging from regional scale to the architectural one. Both the terrain and the nearby building shadowing effects are considered. The approach is modular and several alternative roof models, obtained by surveying and modelling techniques at varying level of detail, can be embedded in a DTM, e.g. that of an Alpine valley surrounded by mountains. The solar radiation maps obtained from raster models at different resolutions are compared and evaluated in order to obtain information regarding the benefits and disadvantages tied to each roof modelling approach. The solar radiation estimation is performed within the open-source GRASS GIS environment using r.sun and its ancillary modules.