H:\EXCERC\GEOD98e.EX7.wpd

Department of Geophysics, Juliane Maries Vej 30, 2100 Copenhagen Ø.

Geodesycourse, Exercise 7.

The exercise has the purpose of showing how distances, directions (angles) and vertical angles (height differences) are mesured with a Total Station.

The exercise takes place in Buddinge. If rain bring umbrellas.

1. Directions and distances are observed in a small triangle, for example with the instrument in the point 1-13-821, see the sketch, and with the prism in two other points with known coordinates. Make sure there is free sight between the points.

The coordinates have been obtained from KMS, and are given in Table 1 in System 34, Sjælland. The program didr has been used to calculate all distances and directions between all points. Angles are then obtained by subtracting two directions.

Compare the observed angles, distances and height differences with the calculated values.

Coordinates in System 34 Sjælland for points in Buddinge.

Nummer Northing Westing H (all units m)

1-13-001 147360.65 76570.06 50.668

1-13-005 147404.933 76516.570 53.153

1-13-006 147404.771 76527.130 52.775

1-13-007 147391.293 76539.838 52.881

1-13-801 147131.439 76432.193 52.060

1-13-807 146984.157 75793.507 0.0

1-13-821 147367.152 76561.312 51.893

1-13-822 147362.760 76565.476 50.741

1-13-823 147368.00 76564.93 50.0

1-13-824 147362.14 76561.19 50.0

1-13-825 147356.92 76565.81 50.0