Servizi per la didattica
PORTALE DELLA DIDATTICA

Geomatics

01RVUMX

A.A. 2022/23

Course Language

Inglese

Course degree

Master of science-level of the Bologna process in Ingegneria Civile - Torino

Course structure
Teaching Hours
Lezioni 44
Esercitazioni in aula 16
Tutoraggio 20
Teachers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Piras Marco   Professore Ordinario ICAR/06 28 0 0 0 6
Teaching assistant
Espandi

Context
SSD CFU Activities Area context
ICAR/06 6 C - Affini o integrative A12
2022/23
Geomatics is the science of modeling and analyzing geographic data " geo-referenced " to produce and manage spatial information. If you think that most of the political decisions are taken on the basis of considerations of spatial data spatial, the social impact of this matter is clear: Geomatics support technical operations, scientific programs, political, administrative and legal issues. The knowledge of the territory through the measurement and representation is essential for its operation , for protectionist purposes, to realize and control a greater part of engineering works . The aim of this course is to offer to the students the knowledge about modern methods of satellite positioning GPS / GNSS positioning inertial measurements, laser scanning , digital photogrammetry and integrated techniques, aimed at surveying applications in support of civil engineering. Moreover, the theory of the instruments and principles of measurement , the definition of the reference systems and their realization is the basis of every geo-referencing wil be provided. The statistical data analysis will be aimed at the elaboration of the acquired measurements, the integration of various sensors. The data processing using specific software, which are used in scientific and professional field, will give a modern point of view on methods of survey.
Geomatics is the science of modelling and analyzing geographic data " geo-referenced " to produce and manage spatial information. If you think that most of the political decisions are taken on the basis of considerations of spatial data spatial, the social impact of this matter is clear: Geomatics skills support technical operations, scientific programs, political, administrative and legal issues. The knowledge of the territory through the measurement and representation is essential for its operation, for many different actions: monitoring, realization and control a greater part of engineering works. A civil engineer has to know the innovative tools and methods to realize a measurement, to create a 3D model or a map, to realize a monitoring of a landslide or of a bridge, to track an infrastructure in the field or to work with digital information. The aim of this course is to offer to the students the knowledge about modern methods of satellite positioning GPS / GNSS positioning, inertial measurements, laser scanning, digital photogrammetry, UAV system and integrated techniques, aimed at surveying applications in support of civil engineering. Moreover, the theory of the instruments and principles of measurement, the definition of the reference systems and their realization, which is the basis of georeferencing, will be provided. The statistical data analysis will be aimed at the elaboration of survey (data acquisition) and sensors integration (data fusion). The digital data and information will be managed and visualized using GIS platform. The data processing using specific software and tools, which are used in the scientific and professional field, will give a modern point of view on methods of survey. The motto of this course is "LEARNING BY DOING", where the student can learn knowledges but also how to apply them on the operative point of view!
Knowledge of the theoretical principles underlying the different measurement techniques, planing and execution of surveys, knowledge of the techniques of data processing, analysis of results and their evaluation by statistical techniques. Application of Geomatics techniques for surveying of the territory, buildings and engineering works, for mapping, movements and deformations monitoring , tracking and implementation of civil engineering and protection of the territory. Ability to perform measurements with GPS / GNSS, total stations, laser scanner, inertial sensors and digital photogrammetry techniques. Ability to choose the optimal survey methods and ability to integrate data from different measurement techniques. Processing capabilities of current measurements on the ground, or examples given. Capacity for self-development of computational procedures for computing problems for applications Geomatics.
At the end of the course, the student will have: - Knowledge of the theoretical principles underlying the different measurement techniques - competence for planning and execution of surveys in the field - knowledge of the techniques of data processing - competences of analysis of results and their evaluation by adopting statistical tools. - knowledge of the application of Geomatics techniques for surveying of the territory, buildings and engineering works, for mapping, movements and deformations monitoring , tracking and implementation of civil engineering and protection of the territory. - ability to perform measurements with GPS / GNSS, total stations, laser scanner, inertial sensors and digital photogrammetry techniques, even including the UAV system. Ability to choose the optimal survey methods and ability to integrate data from different measurement techniques. - processing capabilities of current measurements on the ground, or examples given. - to realize and to use digital data and maps management using a GIS platform, knowing some basic approaches. - capacity to self-development of computational procedures for computing and solving problems in some Geomatics application fields - capability for writing a technical report
In addition to the basic mathematical knowledge, we require the basics of topography, such as geodesy (surfaces and reference systems), cartography, treatment of measures theoretical part and instrumental part on the classic topographic measurements.
In addition to the basic mathematical knowledge, we require the basics of topography, such as geodesy (surfaces and reference systems), cartography, treatment of measures, theoretical part and instrumental part on the classic topographic measurements. Basic of Statistics (concept of mean, median, standard deviation, propagation law ) is required.
Presentation of the course. Elements of statistics, statistical variable and random nD, linear correlation, least squares. Estimation of the variance covariance matrix of the parameters, reliability and theoretical errors of the 1st and 2nd type, data-snooping. Test adequacy of the model and condition number. Redundancy matrix and the relationship between observations and residuals. Problems sqm: equations of geodetic networks, their linearization and conduct of the calculations. Ellipses of error, simulation of networks and configurable variables. Principles of sequential least squares and Kalman filter. Review about the system and on the signal. Concepts for calculating satellite orbits. Stand-alone GPS positioning with code and phase measurements. Errors in GNSS. Relative positioning: phase differences. Cycle slips. Positioning DGPS and RTK differential, transmission of differential corrections. Techniques of acquisition: methods and accuracy of the positioning. Features of GPS / GNSS. Permanent stations. GNSS Positioning: characteristics of GLONASS constellations. Work on new constellations Galileo, COMPASS, QZSS. GNSS RTK networks and traditional networks. Architectures VRS MRS MAC. DATUM: Concept and definition. Inertial Systems and ECEF. Change of reference system and coordinate systems. National geodetic networks: IGM95, networks of GNSS permanent stations, Dynamic National Network (RDN). DATUM Height: height differences with GPS and classical measurements, elevations and geopotential dynamic, orthometric corrections. GNSS networks and 3D integration with classical measures, from field to real field normal and parallel to gravity. Physical principles of inertial positioning, gyroscopes, accelerometers and magnetometers. Inertial sensors and their types IMU strapdown and gimbaled. Principles on calculating of the position with IMU. Bias and errors in the positioning Inertial reference systems, ECEF, navigation and body and navigation equations. Inertial navigation and integrated with GNSS, loosely coupled and tightly coupled. Applications GNSS / IMU in geomatics: high-performance surveys with Mobile Mapping System (MMS) applications in land, air or drone, IMU integration between GNSS, digital cameras, relations between reference systems and time scales. Principles of operation of the laser scanner. Pulse and phase measurements. Echoes and pulse return signal. Instrument and precision. LIDAR Techniques of acquisition for terrestrial and aerial applications. Positioning of the sensor for aerial and terrestrial LIDAR. Integrating aerial LIDAR , GNSS and IMU. The planning of terrestrial and aerial scans . Alignment and registration of LIDAR scans and notes on filtering, classification and segmentation. Products and applications that make use of LIDAR. Principles of photogrammetry. Process Steps: from the image shooting to the map production. Image reference system, internal and external orientation. Analytical foundations: collinearity equations. Prospective Equations and external orientation. Central projection of a plane object. Flight Planning. Internal orientation, distortion lens, analytical symmetric and asymmetric relative orientation, absolute orientation analysis. Work on the aerial triangulation for independent models and stars projective. Stereoscopic vision. Analytical stereo-plotters and digital stereo-plotters. Analog and digital photogrammetric cameras, aerial and land cameras. Digital photogrammetry and ortho rectification. Applications of photogrammetry for surveying of the territory and buildings. The construction and tracking of engineering works: from design to construction work, geodetic network classification for tracking operations. Tracking point in planimentric and altimetric component, using total stations, GPS / GNSS, with gyroscopic theodolites: operational schemes and precisions. Geodetic and cartographic problems in the reduction of measures in the plan mapping the terrain. us Some fundamentals on GIS (geographic informatic system) model: data format, data modeling, selection by attritube and location, DTM and DSM analysis. Vector data analysis.
The course is composed by the following modules: 1) GNSS satellite positioning, 2) Photogrammetry 3) LiDAR 4) Data processing and statistical data analysis 5) tracking and 3D network 6) Inertial platform 7) GIS and digital data Each module is supported by several Labs and some external activities (survey in the field), where professional equipments will be used (LiDAR, UAV, GNSS...) In detail, the programme is the following: Presentation of the course. Elements of statistics, statistical variable and random nD, linear correlation, least squares. Estimation of the variance-covariance matrix of the parameters, reliability and theoretical errors of the 1st and 2nd type, data-snooping. Test adequacy of the model and condition number. Redundancy matrix and the relationship between observations and residuals. Problems sqm: equations of geodetic networks, their linearization and conduct of the calculations. Ellipses of error, simulation of networks and configurable variables. Principles of sequential least squares and Kalman filter. Review about the system and on the signal. Concepts for calculating satellite orbits. Stand-alone GPS positioning with code and phase measurements. Errors in GNSS. Relative positioning: phase differences. Cycle slips. Positioning DGPS and RTK differential, transmission of differential corrections. Techniques of acquisition: methods and accuracy of the positioning. Features of GPS / GNSS. Permanent stations. GNSS Positioning: characteristics of GLONASS constellations. Work on new constellations Galileo, COMPASS, QZSS. GNSS RTK networks and traditional networks. Architectures VRS MRS MAC. DATUM: Concept and definition. Inertial Systems and ECEF. Change of reference system and coordinate systems. National geodetic networks: IGM95, networks of GNSS permanent stations, Dynamic National Network (RDN). DATUM Height: height differences with GPS and classical measurements, elevations and geopotential dynamic, orthometric corrections. GNSS networks and 3D integration with classical measures, from field to real field normal and parallel to gravity. Physical principles of inertial positioning, gyroscopes, accelerometers and magnetometers. Inertial sensors and their types IMU strapdown and gimbaled. Principles on calculating of the position with IMU. Bias and errors in the positioning Inertial reference systems, ECEF, navigation and body and navigation equations. Inertial navigation and integrated with GNSS, loosely coupled and tightly coupled. Applications GNSS / IMU in geomatics: high-performance surveys with Mobile Mapping System (MMS) applications in land, air or drone, IMU integration between GNSS, digital cameras, relations between reference systems and time scales. Principles of operation of the laser scanner. Pulse and phase measurements. Echoes and pulse return signal. Instrument and precision. LIDAR Techniques of acquisition for terrestrial and aerial applications. Positioning of the sensor for aerial and terrestrial LIDAR. Integrating aerial LIDAR , GNSS and IMU. The planning of terrestrial and aerial scans . Alignment and registration of LIDAR scans and notes on filtering, classification and segmentation. Products and applications that make use of LIDAR. Principles of photogrammetry. Process Steps: from the image shooting to the map production. Image reference system, internal and external orientation. Analytical foundations: collinearity equations. Prospective Equations and external orientation. Central projection of a plane object. Flight Planning. Internal orientation, distortion lens, analytical symmetric and asymmetric relative orientation, absolute orientation analysis. Work on the aerial triangulation for independent models and stars projective. Stereoscopic vision. Analytical stereo-plotters and digital stereo-plotters. Analog and digital photogrammetric cameras, aerial and land cameras. Digital photogrammetry and ortho rectification. Applications of photogrammetry for surveying of the territory and buildings. Use of UAV in Geomatics. The construction and tracking of engineering works: from design to construction work, geodetic network classification for tracking operations. Tracking point in horizontal and vertical component, using total stations, GPS / GNSS, with gyroscopic theodolites: operational schemes and precision. Geodetic and cartographic problems in the reduction of measures in the plan mapping the terrain. Some fundamentals on GIS (Geographic Information System) model: data format, data modeling, selection by attribute and location, DTM and DSM analysis. Vector data analysis. Labs: - GNSS data planning - GNSS data acquisition (in the field) - Lidar data acquisition (in the field) and data processing - Photogrammetric data acquisition using UAV and camera (in the field) and data processing - Statistical data processing - 3D networks - GIS data processing and data analysis
Exercises will be held partially in the LAB and someones directly in the field, where operative survey will be realized. In the LAB, data processing and photogrammetric plotting will be carried out. Depending on the number of students, the class will be divided in two groups and for each activity, each group could be divided into different small groups, according to the organization that will be communicated during the class. Surveys will be carried out for photogrammetric purposes. LIDAR measurements will be performed as well as surveys of such GNSS RTK GPS receivers. Exercises will be conducted on least squares, change the reference system, 3D topographic compensation networks. Moreover, design of GNSS measurements (planning), GPS data processing and analysis of the surveys quality, processing and visualization of LIDAR data, photogrammetric image rectification, stereoscopic vision and to realize cartographic products. Specific LABs will be dedicated for GIS applications.
The course is composed by 45 hours of lessons and 15 hours of LABS. Exercises will be held partially in the LAB and someones directly in the field, where operative survey will be realized. In the LAB, data processing and photogrammetric plotting will be carried out. Depending on the number of students, the class will be divided in two/three groups and for each activity, each group could be divided into different small groups, according to the organization that will be communicated during the class. Surveys will be carried out for photogrammetric purposes. LIDAR measurements will be performed as well as surveys of such GNSS RTK GPS receivers. Exercises will be conducted on least squares, change the reference system, 3D topographic compensation networks. Moreover, design of GNSS measurements (planning), GPS data processing and analysis of the surveys quality, processing and visualization of LIDAR data, photogrammetric image rectification, stereoscopic vision and to realize cartographic products. Specific LABs will be dedicated for GIS applications. LABs will be fundamental to develop the final project, focused on the generation of the "as build" of a building.
Educational material will be distributed during the course All material that is necessary for the course will be presented and discussed in class. Further references books - Teunissen, Peter J.G., Handbook of Global Navigation Satellite Systems, Montenbruck, Oliver (Eds.) Springer 2017 - Hofmann-Wellenhof et al (2008) ? GNSS Global Navigation Satellite system. Springer ? New York. - Leick (2003) - Gps Satellite Surveying - J. Wiley ? Canada. III Edizione. - Kraus, K., 1994. photogrammetry . Vol.1 and vol.2 - Manual of photogrammetry ASPRS - Basics of geomatics - M. A . Gomarasca, Ed. Springer, 2009 - Lidar Remote Sensing Paperback ? Matthew J. McGill (Author), NASA Technical Reports Server (NTRS) (2013) - GIS fundamentals 2017 Stephen Wise, CRS press, 2? edition - GIS Fundamentals: A First Text on Geographic Information Systems
Educational material will be distributed during the course All material that is necessary for the course will be presented and discussed in class. Further references books - Teunissen, Peter J.G., Handbook of Global Navigation Satellite Systems, Montenbruck, Oliver (Eds.) Springer 2017 - Hofmann-Wellenhof et al (2008) ? GNSS Global Navigation Satellite system. Springer ? New York. - Leick (2003) - Gps Satellite Surveying - J. Wiley ? Canada. III Edizione. - Kraus, K., 1994. photogrammetry . Vol.1 and vol.2 - Manual of photogrammetry ASPRS - Basics of geomatics - M. A . Gomarasca, Ed. Springer, 2009 - Lidar Remote Sensing Paperback ? Matthew J. McGill (Author), NASA Technical Reports Server (NTRS) (2013) - GIS fundamentals 2017 Stephen Wise, CRS press, 2? edition - GIS Fundamentals: A First Text on Geographic Information Systems
Modalità di esame: Prova orale obbligatoria; Elaborato progettuale in gruppo;
Exam: Compulsory oral exam; Group project;
The exam aims to test the individual achievement of the basic objective of the teaching, the ability to develop a process in which knowledge of design and project proposal are connected in each phase. The oral exam starts from the activities carried out during the laboratories and external survey, that occurred individually processed by the comment of the results. The report is not considered to define the final mark. The autonomy and maturity of each stuudent are verified by finding a correct solutions to some problems explained during lectures or tutorials. Usually the oral exam requires about 30 minutes and it is generally based on 3 questions.
Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.
Exam: Compulsory oral exam; Group project;
The exam aims to test the individual achievement of the basic objective of the teaching, the ability to develop a process in which knowledge of design and project proposal are connected in each phase. The oral exam will be held "on site" and will start from the activities carried out during the laboratories and external survey, that occurred individually processed by the comment of the results. Each student has to upload the single report in the "portale della didattica". The deadline is one week before the oral exam session where the student has made the reservation. The submission of the single report is mandatory and will be evaluated in the range from -1(poor quality) to 2 (high quality). This score will contribute to the final score, as additional score. The autonomy and maturity of each student are verified by finding a correct solutions to some problems explained during lectures or tutorials. Usually the oral exam requires about 30 minutes and it is generally based on 3 questions, concerning all parts of the course.
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.
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