124.016 Astrogeodetic methods of economic Surveying
This course is in all assigned curricula part of the STEOP.
This course is in at least 1 assigned curriculum part of the STEOP.

2019S, VO, 2.0h, 2.5EC


  • Semester hours: 2.0
  • Credits: 2.5
  • Type: VO Lecture

Aim of course

Higher Economy & Accuracy of Surveying by Sun (stars) and a rough Geoid:
1) Speeding up and higher accuracy (30-40%) of polygons or free stations by Sun Azimuths (10% time efford)
2) Similar effect in small networks. Polaris Azimuths (1-3") for precise networks
3) Quick "Astro direction transfer": simultaneous aiming by 2 theodolites and handy when no sightings
4) Simple Vertical Deflection (VD) estimation in hilly & alpine areas: Network errors caused by VD (5-50cm/km) are 90% eliminated in a few minutes, using just a good compass and maps 1:50-200.000
5) How to get a local geoid solution from EGG or IGeS and 2-3 own measurements.
6) Exercises ("UE") for at least 3 topics: 2 topics of (1-3), 1 topic of (4-5), including evaluation of your own observations -- as prefered by you or your group.

Subject of course

A) rapid & economic Astro Orientation methods: Azimuth by Sun (polygon improvement ~40%), direction transfer at bad sightings ...

B) Vertical Deflection & alpine Geoid effects (up to 20cm/km): Estimation by "slope method" (horizontal prisms/ map 1:200.000); 2-point-method (pocket calc.); Transform into National systems, PC programs.

Additional information

post graduate, too



Course dates

Fri12:30 - 14:0015.03.2019 - 17.05.2019Seminarraum 124 VO
Astrogeodetic methods of economic Surveying - Single appointments
Fri15.03.201912:30 - 14:00Seminarraum 124 VO
Fri22.03.201912:30 - 14:00Seminarraum 124 VO
Fri17.05.201912:30 - 14:00Seminarraum 124 VO

Examination modalities


Course registration

Begin End Deregistration end
30.01.2019 00:00

Registration modalities

auch bei Vorbesprechung 14.3.2014, 12:30 Uhr (SEM.124)


Study CodeObligationSemesterPrecon.Info
660 Surveying and Geoinformation Mandatory elective8. Semester


Lecture notes for this course are available. jeweils aktuell in Vorlesung (2.Hälfte) Price: 2.0 Handouts (part 1), projects & publications at the inst. Gerstbach G., 2001: CCD Geodesy: not only LASER, also Stars! Proc. Hydr.& Geotech.Timis., Acad.Rom. Vol.9.

Previous knowledge

basics in surveying