B000331 - SURVEYING AND GEOGRAPHICAL INFORMATION SYSTEMS

Italian

The course covers the following topics:
Introduction to Geomatics;
Geodesy;
Cartography
GIS
Modern topography
Global Navigation Satellite Systems
Digital aerial and drone photogrammetry;
GNSS;
Remote Sensing.
Theoretical lessons are alternated with practical and numerical exercises on the topics covered.

A, Riggio, R. Carlucci, Topografia di Base, EPC Editore, 2015
F. Migliaccio, D. Carrion, Sistemi informativi territoriali, UTET 2016
More references on Moodle

At the end of the course, after passing the final test, the student has the basic knowledge of geodesic elements, reference systems and coordinates. He has acquired the theoretical and practical bases for the use of topographic instruments and satellite positioning techniques. It knows how to statistically process observations made according to polygonal survey schemes and simple networks. He knows the introductory concepts of the theory of cartographic representations, in order to create and use cartographic works at different scales and can set up a drone photogrammetric survey of a portion of land.

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The didactic approaches for the year 2020-2021 will be defined in accordance with the legislation and internal regulations relating to the health emergency. The theoretical contents will be proposed through video lessons, recorded and made available to students. It is strongly recommended to participate (in presence when possible, otherwise remotely) in lessons in real-time: this allows the most effective interaction with the teacher and the possibility to clarify any doubts immediately.
The theoretical lessons are alternated with practical and computational exercises, the results of which will be discussed by the students in the class, in person or at a distance.
The proposed approach to the topics discussed is inductive. Techniques and tools are shown to students, as well as their application to real case studies. If possible instrumental exercises are carried out, otherwise the same activities are simulated or presented thanks to the support of specific multimedia didactic material. Theoretical and methodological aspects will be discussed in depth during the lessons of the course.

All information and material related to lessons and exercises are available on the Moodle platform

Written test and oral interview – in person, if possible; an online exam can be planned for students who specifically require it. During the interview, students report about the intermediate exercises.

Modern topographic instruments: principles of operation and use of autolevels, digital levels, total stations.
Elementary survey schemes: measurement of differences in height, azimuthal and zenithal angles and distances. Processing of data acquired on the field.
Measurements and compensation of networks and traverses: materialisation, survey and planimetric and altimetric compensation.

Terrestrial scanning systems. Data alignment and georeferencing. DEM and DSM.

Digital aerial and terrestrial photogrammetry. Camera network project and flight plan for the drone. Orientation of the images. Scaling and georeferencing of the model. Graphic outputs.

Geodesy: the equipotential surfaces and the geoid; the geometry of the ellipsoid. Coordinate systems and transformation between local ellipsoidical, geocentric and cartesian coordinates. Geodetic reference systems (global and local), elevation systems and differences in height.

Satellite positioning techniques. The GNSS system: system architecture, signal structure, observable differentiation techniques. Design and execution of a survey, use of software for data processing and analysis of the accuracies achievable with different methodologies.

Cartographic representations and maps. Cartographic projections. Official Italian cartography. Numerical cartography and its evolution. INSPIRE.

Geographic information systems. Databases: geographical and alphanumeric components. GIS tools: topological operators and queries. Interoperability and representation: INSPIRE directive and OGC services. Future prospects: from GIS to BIM.

This course contributes to the realisation of the UN goals of the 2030 Agenda for Sustainable Development