Publication Date:
2017-04-04
Description:
The OptecTM ILRIS-3D Terrestrial Laser Scanner (TLS) has been recently acquired by the Istituto Nazionale
di Geofisica e Vulcanologia (INGV) Sezione di Bolgna in the context of a TTC program for volcanoes
monitoring (TTC 1.3 Controllo Geodetico delle Aree Vulcaniche Attive) supported by the Dipartimento di
Protezione Civile.
Several experiments were performed by INGV since 2004 to study the level of precision for surface
modelling by means of laser scanner long range instruments, in order to detect the best suitable standard for
rapid and simple acquisition in volcanic area (Pesci et al., 2007). In particular, during the MESIMEX
experiment (October 2006), a national exercitation organized by the Dipartimento di Protezione Civile
(DPC) exploited to simulate a volcanic eruption in Naples, the second TLS survey of the whole Vesuvius
crater was executed and a large mass variations were estimated revealing the collapse of a portion of the
crater. The alignment and comparison of point clouds (2006–2005) show high variations over a large portion
of the NE slope and a volume variation of about 6850 m3 was computed. The analysis was performed in
almost real time by means of direct comparisons between scans, indicating the laser scanning as one of the
most reliable technique for fast monitoring in crisis time (Pesci et al. 2008a).
The main characteristics recommended for surveying in volcanic areas were the laser device eyes safety, the
achievable very long range (〉 1 km), the precision of measurements and final accuracy in data modelling, the
acquisition velocity, the instrument portability in terms of weight and size and the ability to manage scanner
by means of PC pocket. The ILRIS-3D scanner was chosen based on the previously described recommended
points. The simple operation needed for scan execution and the possibility to plan and realize a complete
survey by means of only two operators confirmed ILRIS-3D as the best choice for volcanic applications.
This technical report is a simple and effective user guide for laser scanner management providing all the
necessary instruction from instrument settings, remote connection, data storage, downloading and preprocessing.
Authors proposal is to make operators independent enough to scan and carry out survey in interested areas
also without a specific experiences in LIDAR (Light Detection And Ranging) monitoring.
Description:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Description:
Published
Description:
1.10. TTC - Telerilevamento
Description:
open
Keywords:
Terrestrial Laser Scanner
;
User Guide
;
04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
report
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