A5041628949- GNSS positioning and interference
- Inertial Sensor and Navigation
- Geophysics and Gravity Measurements
- Indoor and Outdoor Localization Technologies
- 3D Surveying and Cultural Heritage
- 3D Modeling in Geospatial Applications
- Landslides and related hazards
- Cryospheric studies and observations
- Remote Sensing and LiDAR Applications
- Soil Geostatistics and Mapping
- Geographic Information Systems Studies
- Historical Geography and Cartography
- Astronomical Observations and Instrumentation
- Urban Planning and Valuation
- Diverse academic and cultural studies
- Target Tracking and Data Fusion in Sensor Networks
- Geological Modeling and Analysis
- earthquake and tectonic studies
- Power Systems and Technologies
- Satellite Image Processing and Photogrammetry
- Education Systems and Policy
- Geography Education and Pedagogy
- Historical and Environmental Studies
- Geodetic Measurements and Engineering Structures
- Soil erosion and sediment transport
Politecnico di Milano
2013-2024
Geomatics (Norway)
2014
The geodetic monitoring of local displacements and deformations is often needed for civil engineering structures natural phenomena like, example, landslides. A permanent GNSS (Global Navigation Satellite Systems) network can be installed: receiver positions in the interest area are estimated monitored with respect to reference stations. Usually, receivers adopted provide results accuracies at millimeter level: however, they very expensive initial cost risk damage loss discourage this...
Online Material: Tables of statistical indexes; figures comparing displacement solutions. The Global Positioning System (GPS) has been repeatedly proven to be a powerful tool estimate coseismic displacements and waveforms, with accuracies ranging from few millimeters centimeters. These promising results were achieved following two main strategies: differential positioning (DP) precise point (PPP; Bock et al. [1993], Kouba [2003], Larson [2007], [2009], Ohta [2012], Xu Hung Rau [2013]). In...
The main objective of this work is to investigate on precise positioning with a GPS and Galileo enabled chipset embedded in smartphone. analysis carried out code carrier-based algorithms different scenarios: simulated, stationary, pedestrian vehicular. areas investigated are single frequency, the benefits multi-constellation GNSS raw data quality provided by Currently smartphones use only one frequency (L1): an important constraint design algorithm mainly due ionospheric effect. Hence, based...
GNSS positioning in urban scenarios suffers for the scarce visibility of satellites. Integration with 5G services could improve this situation. In paper, digital surface models (DSMs) relevant to different scenarios, namely residential streets and canyons, are simulated around one observer northern Italy (Milano) day year chosen as an example. The time series number in-view satellites, their geometry derived quality indexes (position dilution precision (PDOP)) computed analyzed. As expected,...
In Least Squares (LS), the linearized functional model betweenM observables and N unknown parameters is given. LS provides estimates of parameters, observables, residuals a posteriori variance. To identify outliers to estimate accuracies reliabilities, tests on individual can be performed at different levels significance power. However, not robust: one outlier could spread into all its identification difficult.
Abstract. Natural hazards such as landslides, whether they are driven by meteorologic or seismic processes, constantly shaping Earth’s surface. In large percentage of the slope failures, also causing huge human and economic losses. As problem is complex in its nature, proper mitigation prevention strategies not straightforward to implement. One important step correct direction integration different fields; such, this work, we providing a general overview approaches techniques which adopted...
Positioning services based on GNSS Permanent Networks (PNs) disseminate the reference frame to users; hence networks must be adjusted by constraining ITRF coordinates of some permanent stations (PS), with satellite orbits and clocks constrained values published International Service (IGS). Furthermore, positioning service provider use analysis methods, conventions practices fully consistent IGS standards. In this framework problems arise. A first one is that long term solutions for PS are...
<p>In this paper, the collocation approach to Moho estimate is presented. This method applied inversion of gravity data that can be complemented by depth information coming from e.g. seismic information. In context, a two layers model considered and discussed in order give general theoretical framework for method. A body with inner constant density an separation surface between uniqueness theorem proved estimability given outside itself. Based on result, discussion estimation depths...
Abstract. Architectural barriers are physical elements that limit the freedom of movement and use services a person. The lack accessibility is one most people with motor disabilities, as recognised by World Health Organization. work aims to identify optimal methodology map accessible ways critical barriers, in order produce cartographic support for disabilities. It should also be tool allows citizens report public authority. part ViaLibera?! project, which apply Municipality 9 city Milan....
Abstract. The work is part of "HELI-DEM" (HELvetia-Italy Digital Elevation Model) project, funded by the European Regional Development Fund within Italy-Switzerland cooperation program. aim project creation a unique DTM for alpine and subalpine area between Italy (Piedmont, Lombardy) Switzerland (Ticino Grisons Cantons); at present, different DTMs, that are in reference frames have been obtained with technologies, accuracies, resolutions, acquired. final should be correctly georeferenced...
Abstract. Almost all official national cartographic bases in Europe include Digital Terrain Models (DTMs). To perform analyses at the borders between countries, transnational geographic information is needed: a DTM can be obtained by merging regional DTMs (usually low resolution) and other typically local high resolution DTMs. used different must same three dimensional reference frame, they not present biases consistent nominal scale. The following preliminary actions are required: • 3D...
Abstract. Collaborative projects imply a wide variety of skills, ranging from technical abilities to teamwork and problem-solving attitudes. Innovative teaching programmes focused on the use promotion open-source geospatial tools represent key element in developing such transversal abilities. OpenStreetMap (OSM) brings into play open collaborative dynamics that build critical ecosystem where single contributions are part collective intelligence. This initiative led foundation structured...
Abstract. Global DEMs are fundamental for global applications and necessary also at the local scale, in regions where models not available. Local preferred when they available if characterized by better accuracies resolutions. In general, two problems arise. Firstly, an interest region could be patched several partly overlapping that present similar spatial resolutions: should merged a unified model. Moreover, even is covered one DEM, with accuracy used to locally improve it. All these have...
This work is part of the European Organization for Nuclear Research (CERN) Neutrinos to Gran Sasso (CNGS) Project, aimed at estimating velocity neutrino beams directed from CERN in Geneva toward National Laboratory (LNGS) Assergi, Italy. In particular, distance has be estimated between Large Volume Detector, Icarus, and Borexino reference points, located inside LNGS, laboratory target. All points LNGS are placed underground laboratories. Traditional surveying methods must then applied...
Two problems can arise in analyzing Digital Elevation Models (DEMs). Firstly, one interest region could be patched by several partly overlapping models that present similar accuracies and spatial resolutions; they should merged unified model. Moreover, even when the is completely covered model, local data with better accuracy cover partial areas properly merged. All these have been addressed within Helvetia-Italy Model, a project funded European Regional Development Fund (ERDF). One specific...