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UID:pretalx-foss4g-it-2023-XTQYVV@talks.staging.osgeo.org
DTSTART;TZID=GMT:20230612T143000
DTEND;TZID=GMT:20230612T144500
DESCRIPTION:The paper describes the integrated survey operations carried ou
 t on the Redisole dam (S.Giovanni in Fiore\, southern Italy)\, on the surr
 ounding area and on the internal and external parts of the artifact. The d
 am reservoir is not yet filled\, so that some elements usually not visible
  (spillway\, bottom outlet) could be surveyied and mapped.\nThis survey ha
 s involved the integration of different geomatic techniques\, which can be
  summarized as follows:\n-	Georeferencing of the dam\, by means of the sur
 vey of fixed landmarks with triple frequency differential GPS\, in the RDN
 -ETRF2000 network\;\n-	Quadcopter drone flight for the acquisition of ster
 eoscopic images for photogrammetric use for a surveyed area of about 25 he
 ctares\; the same drone has been used for obtaining close-up images for th
 e inspection of the bituminous surface of the dam. To this aim\, GCP have 
 been positioned and their coordinates have been acquired acquisition with 
 differential GPS and Total Station\;\n-	Survey by long range Terrestrial L
 aser Scanner of the artifact\, of its components and of the surrounding ar
 ea (up to 500 m from the dam)\; the fixed landmarks and some Ground Contro
 l Points have been used\, also surveyied by drone photogrammetry. \n-	Scan
 ning of the tunnels\, of the surface and bottom outlets as well as of the 
 shaft\, with a series of static scans conducted with a high precision\, me
 dium range Terrestrial Laser Scanner.\n-	Registration of the point clouds 
 obtained and of DTM and DSM (provided by the Italian Ministry for the Envi
 ronment) with 1m spacing\n-	Registration by the Persistent Scatterers (PS)
  provided by the Italian Ministry for the Environment.\nThe products obtai
 ned are:\n-	External planimetry of the dam\, plano-altimetric rendering (e
 levated points and contour lines) in vector format\, manageable in CAD env
 ironment.\n-	Map\, profiles and quoted sections of the tunnels\, of the bo
 ttom and surface outlets\, as well as of the shaft.\n-	3D textured model o
 f the entire site\;\n-	Orthophoto of the whole site with 5 cm/pixel resolu
 tion\;\n-	High resolution orthophoto projected on the dam wall\, for the v
 isual search of the critical points of the surface.\nThe future activities
  include:\n-	The accurate identification of the PS present in the area and
  the measurement of their movements for the identification of any displace
 ments of the building and/or of the entire area\;\n-	PS monitoring through
  periodic measurement via GNSS and TLS and comparison of relative movement
 s with those obtained via Differential Interferometric Synthetic Aperture 
 Radar.
DTSTAMP:20260427T070047Z
LOCATION:Sala Videoconferenza @ PoliBa
SUMMARY:Integrated use of terrestrial geomatic techniques\, aerial lidar an
 d satellite SAR for the survey of a dam and the surrounding area - Serena 
 Artese\, Michele Perrelli
URL:https://talks.staging.osgeo.org/foss4g-it-2023/talk/XTQYVV/
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