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Geodetic Reference Systems

Course developer

Replaced course

BūvZM007 [GBUVM007] Geodetic Reference Systems

Course abstract

The aim of the study course is to gain in-depth knowledge of the importance and place of the geodetic support system in the successful development of the national economy, the principles of their expansion, long-term protection and preservation. Theory of geodetic measurement errors and smoothing methods are considered. The constructive structure of integrated geodetic networks is mastered. Representation of the Earth's ellipsoid surface on the cartographic projections of the plane, connection with geodetic networks, methods of their formation are mastered. Learns the exact geodetic measurements required for the installation of geodetic networks.

Learning outcomes and their assessment

1. Knowledge of the types of geodetic networks, their construction methods, taking into account the intended tasks of the network, accuracy characteristics and the nature of the area. Able to list, describe and evaluate the factors influencing geodetic measurements - tests
2. Is able to apply the acquired theoretical knowledge in practice - to independently perform accurate measurements of angles, distances, elevations and GNSS, to mathematically process the measurement results and evaluate their accuracy. The student shows his / her skills in the development of independent work.
3. Is able to independently and rationally organize the development of an integrated geodetic network of the required accuracy, choosing the most appropriate methods and tools depending on the task of the network. The student understands professional ethics, is able to evaluate the impact of his / her professional activities on the environment and society - practical and independent work

Course Content(Calendar)

1. Introduction to the essence of geodetic reference systems. Geodetic reference systems, its tasks, historical context and significance in the national economy. Interdisciplinary context in the development of geodetic reporting systems (lect. 2h)
2. Earth shape and size, reference ellipsoid, horizontal distances and angles, map plan and profile. Absolute and relative measurement errors. Approximate operations. (lect. 3h)
3. Coordination of coordinate systems and lines. Geographical and orthogonal coordinate systems. Latvian coordinate system LKS 92. Coordinate networks. Determining the orthogonal and geographical coordinates of points on a map. (lect. 2h, pract.w. 1h)
4. Scale, its role in the visualization of geospatial information. (lect. 1h, pract.w. 2h)
5. Development and substantiation of geodetic reference system project work variants. (lect. 1h, pract.w. 2h)
6. Basics of geodetic network design. (lect. 3h)
7. Design and development of horizontal geodetic networks. (lect. 1h, pract.w. 2h)
8. Design of vertical geodetic networks. (lect. 1h, pract.w. 2h)
Test 1 (1h)
9. Design of gravimetric, astronomical and magnetometric geodetic networks. (lect. 1h, pract.w. 1h)
10. Determination of geodetic reference system maintenance mode parameters. (lect. 1h, pract.w. 2h)
11. Surveying technologies of geodetic networks. (lect. 1h, pract.w. 2h)
12. Geodetic instruments and basics of their operation. (lect. 1h, pract.w. 2h)
13. Processing of measurement data of geodetic reference systems. (lect. 1h, pract.w. 2h)
14. Basics of work process organization in installation and measurement of geodetic reference systems. (lect. 1h, pract.w. 2h)
15. Basics of installation of geodetic network points (elements). (lect. 1h, pract.w. 2h)
16. Quality assessment of the developed geodetic reference systems. (lect. 1h, pract.w. 2h)
Test 2 (1h)

Requirements for awarding credit points

Written type of examination - a test that ends with a mark.
The test task consists of:
- test on the theoretical subject acquired in the study course;
- practical task on the topics acquired in the practical work of the study course and homework.
All practical work, tests, homework must be included.

Description of the organization and tasks of students’ independent work

Students are required to complete two homework independently, following the requirements defined in the lectures:
1. homework. Describe the justification for the establishment of the Geodetic Reference System for the assigned territory (volume at least 15 pages, submitted electronically, presented).
2. homework. Description of the geodetic reference system for a specific country (Presentation volume at least 20 slides).

Criteria for Evaluating Learning Outcomes

The evaluation of the study course depends on the evaluation of the solution of the theoretical questions and the task of the examination, and the cumulative evaluation of the tests and homework of the study course. All planned practical work must be completed and credited. Attendance at lectures must be at least 75% of the total.
A student with a successful mark on the test or test with a mark in the test can obtain if at least 50% of the test questions are answered correctly.

Compulsory reading

1. Bikše J. Augstākā ģeodēzija. Mācību līdzeklis., Rīga:, RTU, 2007. Pieejams: https://dom.lndb.lv/data/obj/file/304424.pdf
2. Žagars J., Zvirgzds J., Kaminskis J. Globālās navigāciju navigācijas atelītu satelītu sistēmas (GNSS). Ventspils Augstskola, 2014., 231 lpp.
3. I, II un III klases nivelēšanas instrukcija VZD 2001.

Further reading

LR un EU normatīvie regulējumi saistībā par ģeodēzisko sistēmu uzturēšanu un kalibrāciju.

Periodicals and other sources

Mērnieks.lv. Pieejams: www.mernieks.lv
Latvijas Ģeotelpiskās informācijas aģentūra. Pieejams: www.lgia.gov.lv
GIM International: Mapping the world. Pieejams: www.gim-international.com
International Union of Geodesy and Geophysics (IUGG) www.iugg.com http://www.iugg.org

Notes

Academic higher education master's study programme “Geoinformatics and Remote Sensing” full-time studies