Geodesy 3

Course guarantor:

Martin Štroner

Lecturer:

Martin Štroner

Tutor:

Michal Seidl, Zdeněk Skořepa

Supervisor:

Department of Special Geodesy

Synopsis:

Altitude system of the Czech Republic. Methods of stabilization of altitude points. Geometric levelling from the centre, technology of precision and technical levelling including errors and accuracy characteristics. Method of trigonometric determination of height differences. Methods of suppressing the effect of refraction on the measured zenith angle. Centering and mathematical reduction of measured quantities. Detailed altimetry measurements include older and newer technologies of the tachymetric method according to the available instrumentation up to the production of the altimetry plan.

Requirements:

no

Syllabus of lectures:

1. Introduction to height measurements. Basic concepts, types of heights,

Methods of height measurements, height system of the Czech Republic, stabilisation and signalling of height points.

2-4. Levelling. The essence of the method, levelling instruments of the leveling and compensator type,

levelling battens and pads, levelling methods, technology of levelling measurements, types of levelling (technical and precision), preparation for measurements, tests and rectification. Laser levelling instruments.

5. Errors and accuracy of levelling work. Limits of deviation. Equalization of results of levelling measurements. Special levelling work. Leveling of profiles. Surface levelling.

6. Hydrostatic and trigonometric levelling. Hydrostatic levelling, air pressure measurement units, barometric height measurement. Trigonometric measurement of object heights (principle, use, accuracy).

7. Brief theory of refraction.

8. Trigonometric determination of height differences (TUVR) in alpine terrain. TUVR in flat terrain. Measured quantities in TUVR and their reduction. Instruments and target features. Centering and reduction of zenith angles. Determination of centering elements, theodolite horizon heights and target feature.

9. Methods of measuring zenith angles - elimination of systematic errors. Connecting measurements. Mathematical reductions of the measured length. Three basic procedures for the needs of semi-altitude and elevation surveying. Calculation of elevations and heights in TUVR. Economic evaluation of the method.

10. Detailed altimetry measurements. Terrain relief and its representation. Tachymetry - principle, instruments and aids. Thread tachymetry. Derivation of tachymetric equations.

Tachymetry with electro-optical rangefinders - large area and block tachymetry. Office computing and imaging.

11. Simple height alignment tasks. Horizontal and inclined straight and level lines, contour lines, flood lines, etc.

12. Review of material presented. Examination requirements

Syllabus of tutorials:

Task 1 Coordinates and height of a point

Task 2 Height of the object

Task 3 Determination of the horizontal and general plane

Task 4 Tachymetry

Task 5 Technical levelling

Task 6 Precision levelling

Task 7 Digital terrain model, contour lines solution

Study Objective:

Mastery of the subject matter.

Study materials:

! Blažek R. - Skořepa Z.: Geodézie 3 Výškopis, ČVUT Praha, 2009.

! Torge, W.: Geodesy. Walter de Gruyter, Berlin, New York, 2001. ISBN 3-11-017072-8

? Bohm, J. - Svoboda, J.: Geometrická nivelace. SNTL 1960.

? Vykutil, J.: Vyšší geodézie. Kartografie, Praha, 1982.

? Hampacher, M. - Štroner, M.: Zpracování a analýza měření v inženýrské geodézii. 2. vyd. Praha: Česká technika - nakladatelství ČVUT, ČVUT v Praze, 2015. 336 s. ISBN 978-80-01-05843-5.

: Metodický návod pro práce v základním výškovém bodovém poli. Zeměměřický úřad, Praha 2003.

Note:

Further information:

https://k154.fsv.cvut.cz/vyuka/bc-geodezie/ged3/

Time-table for winter semester 2024/2025:

	06:00–08:0008:00–10:0010:00–12:0012:00–14:0014:00–16:0016:00–18:0018:00–20:0020:00–22:0022:00–24:00
Mon	roomTH:B-870 10:00–12:50 (lecture parallel1 parallel nr.101) Thákurova 7 (budova FSv) roomTH:B-870 13:00–15:50 (lecture parallel1 parallel nr.102) Thákurova 7 (budova FSv)
Tue
Wed	roomTH:C-221 08:00–09:50 (lecture parallel1) Thákurova 7 (budova FSv)
Thu
Fri

Time-table for summer semester 2024/2025:

Time-table is not available yet

The course is a part of the following study plans:

• Geodézie a kartografie (compulsory course)
• Geodézie a kartografie (compulsory course)