Subject / subject in the whole curriculum

Currently, GNSS, MDT and CAD are the common instrumentation and applications used in agriculture and topography for the representation of the territory. The GPS (Global Positioning System) satellite constellation was the first and for a long time, the reference, but there are other global systems with the same functions such as the GLONASS system (Russia), the Galileo system ( Europe) and Beidou (China) that can be used together. In short, they can position us at any point on Earth with a certain precision. From the most elementary to the most accurate receiver used in agriculture and topography, there is a wide range of devices, as well as different methodologies to be able to georeference farm elements, samples or sensor measurements. Digital Terrain Models (DTM) are the final result of topographic surveys. Its construction based on different types of coordinates and referential systems can give rise to 3D views and a better description of the terrain. This 3D view of the terrain has been generated with the help of CAD programs giving very localized and at the same time accurate perspectives from data taken in the field or from digital cartography.

 

Recommendations

A basic knowledge of the use of computers and computer programs is required, as well as of the English language at the level of reading and comprehension.

 

Important note

According to the regulations of the University of Lleida, the recording of class sessions and practices without permission and their improper use can lead to serious sanctions for the students, which can lead to expulsion from the university.

Knowledge objectives. The student who passes the subject must understand and demonstrate knowledge in:

•     In the use of GPS instrumentation in the field, as its subsequent development in the cabinet.
•     Creation and construction of digital terrain models based on field data or from digital and analog maps.
•     Understand and demonstrate knowledge of drawing and computer-aided design for handling and making plans in two dimensions.
•     Understand and demonstrate basic knowledge of computers and computer methods of drawing and design in three dimensions.
•     The main sources of complementary information and other resources related to these geographic information technologies and their application in all fields.

Capacity objectives (competences). The student who passes the subject must be able to:

•     Know how to apply knowledge about field data in the representation of territory information.
•     Define and apply calculation techniques for the further development of the MDT construction.
•     Demonstrate theoretical and practical knowledge of the methods and computer equipment necessary for the management and preparation of plans (handling, drawing and design) in 2D and 3D.
•     Solve problems raised from real field data.
•     Prepare and present the digital cartography from which the modifications and measurements will be executed in the digital models of the terrain at different scales.

General competences

At least the following basic competencies must be guaranteed:

CB1. That students have demonstrated to possess and understand knowledge in a study area that is based on the subjects that precede it in previous courses, and also includes some aspects that involve knowledge derived from the avant-garde of their field of study. study

CB2. That students know how to apply their knowledge to their work or vocation in a professional way and possess the competencies that are usually demonstrated through the elaboration and defense of arguments and the resolution of problems within their area of ​​study

CB3. That students have the ability to gather and interpret relevant data (usually within their area of ​​study) to issue judgments that reflect on relevant issues of a social, scientific or ethical nature

CB4. That students can transmit information, ideas, problems and solutions to a specialized and non-specialized audience.

CB5. That the students have developed those learning abilities necessary to undertake further studies with a high degree of autonomy.

 

In addition, the graduate must be able to:

CG4. Ability to write and sign measurements, segregations, subdivisions, evaluations and appraisals within the rural environment, the technique of the agri-food industry and spaces related to gardening and landscaping, whether or not they have the character of expert reports for judicial bodies or administrative, and regardless of the use to which the movable or immovable property object of the same is destined.

CG7. Knowledge of basic, scientific and technological subjects that allow continuous learning, as well as an ability to adapt to new situations or changing environments.

CG13. Correction in the oral and written expression

CG14. Domain of a foreign language

CG15. Domain of information and communication technologies

CG16. Regarding the fundamental rights of equality between men and women, the promotion of Human Rights and the values ​​of a culture of peace and democratic values

Specific competencies

The graduate in AGRICULTURE AND FOOD ENGINEERING. ESPECIALITY IN RURAL AND ENVIRONMENTAL ENGINEERING after completing their studies will have acquired the following knowledge and skills:

Basic training module

CEFB2. Capacity for spatial vision and knowledge of graphic representation techniques, both by traditional methods of metric geometry and descriptive geometry, as well as by computer-aided design applications.

CEFB3. Basic knowledge about the use and programming of computers, operating systems, databases and software with application in engineering.

CEFB6. Basic knowledge of geology and field morphology and its application in problems related to engineering.

CEMC6. Surveys and topographic stakeouts. Cartography, Photogrammetry, geographic information systems and remote sensing in agronomy.

 

Transversal competencies

CT1. Apply the gender perspective to the functions of the professional field

 

Topic 0. Presentation of the subject.

Module 1: CAD

    Topic 1. DRAWING AND DESIGN ASSISTED BY COMPUTER FOR THE MANAGEMENT AND CONFECTION OF 2D PLANS.
    Hardware and Specific Software. Drawing management. Creation and advanced editing of complex objects. Layer management Restraint Printing and Scale. Settings and customization.

    Topic 2. INTRODUCTION TO 3D DRAWING AND DESIGN COMPUTER EQUIPMENT AND METHODS.
    Differences between 2D and 3D. 3D coordinate systems. Point of view switch. Multiple graphic windows. Models with wires. Surface models. Solid Models: Solids Primitives 3D, Solids for extrusion, Solids for revolution, Boolean editing operations, Basic Edition, Advanced Edition, Properties. 3D model printing.

Module 2: GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS)

    Topic 1. SPACIAL AND CONTROL SEGMENTS.
    Introduction and description of the spatial segments and control of the different SSNGs.

    Topic 2. SEGMENT OF USERS. DETERMINATION OF POSITION
    Positioning. Measure distances Errors Coordinates

    Topic 3. CORRECCIÓN SYSTEMS.
    Differential satellite and terrestrial systems.

Module 3: MDT

    Topic 1. INTRODUCTION TO DIGITAL LAND MODELS (TDM).
    Antecedents Concept Representation systems. Digital lift models (MDE).

    Topic 2. DATA TICKET (MDT).
    Direct methods for the construction of MDT. Classical Topography: Total Station Handling. LiDAR systems. Indirect methods: Analog and digital cartography.

    Topic 3. CONSTRUCTION OF DIGITAL MODELS.
    Graphic formats Analog and digital vectorization. Description software to use. Construction of 2D models.

    Topic 4. PRACTICAL APPLICATIONS OF DIGITAL MODELS.
    Triangulation Elevation of entities. Meshes Heights maps Pending maps Maps of Direction of water flows. Visibility of the models. Profiles.

 

PRACTICAL ACTIVITIES

Module 1: CAD

All theoretical and practical classes will be held in the computer room. Theoretical and practical explanations will be alternated in periods not exceeding 1 h.

•     Practices Unit 1. Completion of a set of sheets proposed by the teacher.
•     Practice Topic 2. Perform a set of 3D exercises.

Module 2: GNSS.

•     Field practice 1. Evaluation of the accuracy and the precision of two GNSS receivers with two correction systems.
•     Field practice 2. Acquisition of field data through a mobile phone receiver and through a portable RTK receiver with correction via GPRS.
•     Practice in the computer room 1. Management and representation of the data obtained.
•     Practice in the computer room 2. Use of GIS to manage and represent information obtained with GNSS.
•  

Module 3: MDT.

•     Practice sessions in Computer room: Representation of 2D points. Layer management
•     Computer classroom practice sessions: Triangulation. Construction curves of level. Meshes 3D view

The teaching will be given in a computer room, combining theoretical concepts with computer practice. There will also be practical field sessions to learn the use of data collection devices.

 

Tipus d'activitat	Descripció	Activitat presencial alumnat		Activitat no presencial alumnat		Avaluació	Temps total
		Objectius	Hores	Trebrall alumnat	Hores	Hores	h/ECTS
Lliçó magistral	Classe magistral	Explicació dels principales conceptos teòrics	22	Estudi: Conèixer, comprender i sintetitzar els conceptes explicats a classe	36	2	60h/2.4 ECTS
Aula d'informàtica	Pràctica d'aula d'informàtica	Executar casos pràctics per a comprendre els conceptes i adquirir habilitats en el procés i l'anàlisi de dades mitjançant programes informàtics.	18	Aprendre a resoldre  problemes i casos	27		45h/1.8 ECTS
Pràctiques de camp	Pràctica de laboratori i camp	Executar casos pràctics per a comprendre els conceptes i adquirir habilitats en l'adquisició de dades en el camp mitjançant instruments de mesura.	18	Estudiar i realitzar memòria	27		45h/1.8 ECTS
Totals			58		90	2	150h/6ECTS

 

 

A detailed planning of the subject will be loaded in the Resources section of the Virtual Campus at the beginning of the course. The planning will contain the distribution of the credits in the different activities and the dates, places and professors of each one.

The evaluation of the subject will be done through continuous evaluation and will consist of various activities within each of the 3 modules.

Module 1 - CAD will be assessed through a 2-hour exam. Module 1 represents 16.67 % of the final mark of the subject.

Module 2 - GNSS will be evaluated through 3 grades: 1 test-type exam to evaluate the theoretical content that will be worth 50 % of the grade of Module 2 and 2 exercises derived from the practices carried out that will be worth 25 % of Module 2 each . If the score in the exam is lower than 4 points out of 10, students will have to take the remedial exam. Only those students who have scored more than a 4 and less than a 5 out of 10 will be able to present themselves to raise the grade of the exam. The grade for Module 2 will be obtained from the weighted average of the grades obtained and will represent the 33.33 % of the final grade. Failed practice exercices (less than 5 points out of 10) can be remediated if the student requests it.

Module 3 - MDT represents 50 % of the final mark of the subject. The MDT module will be assessed through a GIS platform procedures exam, a paper and through various practical exercises (appropriate instructions will be given at the beginning of the module). On the grade of this module, the exam will consist of a two-hour test in which you will have to create a project in a GIS platform from scratch, importing layers, data and extracting results on MDT layers. The work will consist of 2 geographical studies with analysis of the MDT of each area: one of an agricultural area with few plots and another of a larger area. The exam will have a weight of 20 % on the grade of the module, the work will have a weight of 60 % on the grade of the module and the remaining 20 % will correspond to the delivery of exercises that will be done throughout the course . The work requires a minimum score of 5 out of 10 to pass the module, in case of failure, the assignment must be retaken for the final assessment. Therefore, the suspended work will be mandatory to retake if you want to pass the module and, therefore, the subject. At the request of the student, there will be the possibility of improving the exam grade by repeating it in the final evaluation of the subject.

The subject is approved by obtaining 5 points or more out of 10 in the sum of the weighted scores of each module. However, it is necessary to obtain a minimum of 4 points out of 10 in each module in order to pass the subject. Otherwise, the final mark of the subject can never be higher than 4.9 points out of 10.

Observations:

• If any student cannot follow the continuous assessment for any justifiable reason, he/she must inform the ETSEAFIV Directorate of Studies and the subject coordinator at the start of classes and request the assessment procedure official alternative within the established deadline.
• In order to pass the subject, it is essential to attend and complete all field practices.
• In order to be able to make a fair assessment for all students, plagiarism in the activities carried out will be meticulously pursued.

Module 1: CAD

• The help of the Autocad software

 

Module 2-3: GNSS/MDT

• Ruiz-Morales, M., 2003. Nociones de Topografía y Fotogrametría Aérea. Universidad de Granada, Granada. 529 pp.
• Domínguez García, F. - 1991 - Topografía general y aplicada. 10ª edición, Editorial DOSSAT,Madrid, 823 pp.
• Chueca, M.- 1982 – Topografia (tomos I,II), Editorial DOSSAT,Madrid
• Hofmann-Wellenhof, B., Collins, J., Lichtenegger, H. 2000. GPS Theory and Practice. 5th ed. SpringerWienNewYork, New York, 382 pp.
• Xu, G. 2007. GPS: theory, algorithms, and Applications. Berlin: Springer