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Global Positioning Methods

Course developer

Prior knowledge

BūvZ6045, Geodetic Support System I

Replaced course

BūvZ5017 [GBUV5017] Global Positioning Methods

Course abstract

The study course aims to gain knowledge about applying global positioning methods in solving practical tasks and scientific issues. Students get acquainted with global positioning systems and their composition, application, reference position in space and time for solving various geospatial problems. Students learn the principles of the structure and operation of global positioning. Applied instruments and combined systems, measurement methods, chamber processing of the obtained data, interpretation of results, accuracy assessment. Knowledge about the application of global positioning in various sectors of the economy is gained.

Learning outcomes and their assessment

Knows the structure of global positioning systems, instrumentation systems and auxiliaries used in the implementation of measurements. - test
Is able to apply knowledge of different measurement methods, interpretation of the obtained results and accuracy assessment methodology. - practical work
Able to apply the acquired knowledge to organize global positioning measurements in accordance with the requirements, depending on the requirements and the situation in the area. To process and evaluate the obtained results, to be able to detect and eliminate possible measurement errors, to analyze and evaluate the relationship of measurement results in determining and refining the geoid model - practical works

Course Content(Calendar)

1. Introduction to the essence of global positioning. Geodetic reference systems, tasks, historical development and significance in the national economy. Interdisciplinary context in the development of geodetic reporting systems. (2h)
2. Basic principles of the structure and operation of the Global Positioning System. Global Positioning Systems in the World. (2h)
3. Satellite orbits, visibility and signals. (2h)
4. Satellites used, their prototypes and development history. (2h)
5. Land Control Command Centers. (2h)
6. Coordinate and time systems. (2h)
7. Factors influencing global positioning measurement error. (2h)
8. Global positioning tools and systems. (1h)
9. Surveying methods (coordinate determination method) with global positioning systems. (1h)
10. Coordinate calculations. (1h)
11. Measurement processing, accuracy evaluation, analysis of results. (1h)
12. Development and reconstruction of geodetic networks using Global Positioning. (1h)
13. Use of global positioning in altitude measurements. (1h)
14. Application of global positioning in geoid refinement. (1h)
15. Application of global positioning measurements in GIS, cartography, construction, economy in general. (1h)
16. The role of global positioning systems in LATP; In the development of EUPOS and other subsystems. (2h)

Practical work (24h)
1. To develop a geodetic support system for a given territory, observing the given global positioning measurement parameters and measurement methods; (12h)
2. Description of the application of the Global Positioning System for a given sector of the economy. (12h)

Requirements for awarding credit points

Exame.
The final assesment includes:
• oral test on the theoretical part;
• practical work;
• independent works.

Description of the organization and tasks of students’ independent work

Students must select Literature and regulations and prepare for practical work.
Preparation of descriptions of practical works after the development of their practical part.
Preparing for the final oral test.

Criteria for Evaluating Learning Outcomes

The assessment of student performance depends on the cumulative assessment of the semester, the percentage distribution of which is as follows:
• oral exam - 40%
• Practical work - 40%
• Independent work - 20%.

Compulsory reading

1. Bikše J. Augstākā ģeodēzija. Mācību līdzeklis, Rīga, RTU, 2007. Nav LBTU FB. Ir RTU, LNB
Tiešsaistē https://dom.lndb.lv/data/obj/69010.html
2. Žagars J., Zvirgzds J., Kaminskis J. Globālās navigācijuas satelītu sistēmas (GNSS). Ventspils Augstskola, 2014, 231 lpp. Ir LBTU FB 1 eks.
3. I, II un III klases nivelēšanas instrukcija. Rīga: VZD, 2001. NAV lielākajās b-kās.
4. "Mikro-g LaCoste absolūtie gravimetri" [tiešsaiste] [skatīts 30.03.2022.] Pieejams: http://microglacoste.com/absolutemeters.php).
5. Zhiping Lu, Yunying Qu, Shubo Qiao. Geodesy: Introduction to Geodetic Datum and Geodetic Systems, Springer, Berlin, Heidelberg. 2014, 328. p. Nav liel. L-jas b-kās

Further reading

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

Periodicals and other sources

www.mernieks.lv; www.lgia.gov.lv; www.gim-internationa.com; www.iugg.com

Notes

The course is included in limited choice (B section) in the master's study program Environmental, Water and Land Engineering (VUZI) specialization Geodesy; As part of the elective (C) section, the course is available in: 1) VUZI specialization Land Management; 2) VUZI specialization Hydrotechnics and Water Management; 3) VUZI specialization Environmental Engineering; master's study program Forestry Science; 4) master's study program Landscape Architecture and Planning.