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Longo, D.
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- PublicationRestrictedHardware in the Loop Tuning for a volcanic Gas Sampling UAV(2007)
; ; ; ; ; ; ;Caltabiano, D.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), Università degli Studi di Catania, Viale A. Doria 6, Catania, Italy ;Longo, D.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), Università degli Studi di Catania, Viale A. Doria 6, Catania, Italy ;Melita, D.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), Università degli Studi di Catania, Viale A. Doria 6, Catania, Italy ;Muscato, G.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), Università degli Studi di Catania, Viale A. Doria 6, Catania, Italy ;Orlando, A.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), Università degli Studi di Catania, Viale A. Doria 6, Catania, Italy ;Giudice, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia; ; ; ; ; ; ; Valavanis, Kimon P.Significant advances have been made in recent years in volcanic eruption forecasting and in understanding the behaviour of volcanoes. A major requirement is improvement in the collection of field data using innovative methodologies and sensors. Collected data are typically used as input for computer simulations of volcanic activity, to improve forecasts for longlived volcanic phenomena, such as lava flow eruptions and sand-rain. This research was conducted in cooperation with OTe Systems Catania, Italy [16].205 30 - PublicationRestrictedLarge area SiC-UV phothodiode for spectroscopy portable system(2019-01)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; In this work, we present the extensive characterization of large area Silicon Carbide based UV sensors candidate for outdoors spectroscopic applications of gas or liquid. The proposed SiC Schottky devices exhibit dark current density of 0.12 nA/cm2 @ 15 V, a 0.12 A/W responsivity @ 300 nm, optimal visible blindness and switching time of ~ 190 ns. Effects of temperature on the sensor performance, of crucial interest for outdoors applications, are also examined in the range from -20 °C to 90 °C.77 2 - PublicationRestrictedROBOVOLC: a robot for volcano exploration result of rst test campaign(2003)
; ; ; ; ; ; ; ; ; ; ; ; ; ;Muscato, G.; DIEES università di Catania ;Caltabiano, D.; DIEES università di Catania ;Guccione, S.; DIEES università di Catania ;Longo, D.; DIEES università di Catania ;Coltelli, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Cristaldi, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Pecora, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Sacco, V.; University of Leeds, UK ;Sim, P.; University of Leeds, UK ;VirkS S, G. S.; University of Leeds, UK ;Briole, P.; IPGP, France ;Semerano, A.; Robosoft, France ;White, T.; BAE Systems, UK; ; ; ; ; ; ; ; ; ; ; ; ROBOVOLC is a new robotic system that has been designed to help scientists in the exploration of volcanoes. It is composed of three subsystems: a rover platform with six articulated and independently actuated wheels; a manipulator arm to collect rock samples, drop and pick up sensors and sample gas; and a pan‐tilt turret with a high resolution camera, video‐camera, infrared camera and a doppler radar for gas speed measurement. This paper contains a short description of the system, following an introduction to the problem and review of the state‐of‐the‐art. Finally, results from the first test campaign on Mount Etna during September 2002 are briefly described.313 77 - PublicationRestrictedSO2 Monitoring With Solid State-Based UV Spectroscopy Compact ApparatusWe propose a solid state-based spectroscopy compact apparatus for monitoring environmental SO2, particularly suitable, for example, for volcanic applications. A prototype system, with a 170-mm long optical path, was assembled and tested using a commercial LED operating at 285 nm and a large area silicon carbide. The laboratory tests were carried out using calibrated quartz cuvettes containing SO2 at fixed concentrations and standard SO2 gas with 20% of O2 and complemented with N2 dry gas to fill the optical system chamber. Optical signal attenuations in the chemically interactive chamber follow the Beer-Lambert-Bouguer law in all the performed tests and a 0.16 ppm/pA nominal chemical resolution and ± 0.8 ppm concentration error were obtained from the experimental data for the current prototype.
82 2 - PublicationUnknownAn Overview of the “Volcan Project”: An UAS for Exploration of Volcanic Environments(2008-07-21)
; ; ; ; ; ; ;Astuti, G.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), ;Giudice, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia ;Longo, D.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), ;Melita, C. D.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), ;Muscato, G.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES), ;Orlando, A.; Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi (DIEES),; ; ; ; ; This paper presents an overview of the Volcan Project, whose goal is the realization of an autonomous aerial system able to perform aerial surveillance of volcanic areas and to analyze the composition of gases inside volcanic plumes. There are increasing experimental evidences that measuring the chemical composition of volcanic gases can contribute to forecast volcanic eruptions. However, in situ gas sampling is a difficult operation and often exposes scientists to significant risks. At this aim, an Unmanned Aircraft System equipped with remote sensing technologies, able to sense the plume in the proximity of the crater, has been developed. In this paper, the aerial platform will be presented, together with the problems related to the flight in a hard scenario like the volcanic one and the tests performed with the aim of finding the right configuration for the vehicle. The developed autonomous navigation system and the sensors unit for gas analysis will be introduced; at the end, several experimental results will be described.885 24