nd mz is
ist for the
1ge in the
1e system,
ance ratio
rred to the
^cause the
in optimal
)se range
9.0 meter,
Bas, Hüseyin Gazi
1.37 1.42 2.73
10 x10 x10-5 x10-5
1.47 1.51 2.95
20 x10-5 x10-5 x10-5
1.68 1.65 3.36
30 x10-5 x10-5 x10-5
2.04 1.88 4.07
40 x10-5 x10-5 x10-5
2.67 2.23 5.33
50 x10-5 x10-5 x10-5
3.86 2.82 7.72
60 x10-5 x10-5 x10-5
6.47 3.92 1.29
70 x10-5 x10-5 x10-5
1.40 6.52 2.79
80 x10-5 x10-5 x10-5
5.45 1.72 1.09
90 x10-5 x10-5 x10-5
6 CONCLUSION
In close range engineering measurements with a theodolite the accuracy of object space
coordinates is a function of the object distance, the base, the measured angles with theodolite and
the theodolite reading error. Equations (8), (9) and (11) can be used to calculat the estimated
object space coordinate errors for any configuration when the object distance, the base, the
approximate angles of the points and theodolite reading error are given. In addition, the equations
can be used to determine the base and object distance and to estimate the maximum magnitudes
of horizontal and vertical angles that should be used in data acquisition in order to attain a
certain required accuracy. Table 1 can also be used with the same aims.
REFERNCES
Abdel-Aziz, Y.I.,, 1979. An application of Photogrammetric Techniques to Building Costruction.
Photogrammetric Engineering, Vol. 45, No. 4, pp. 539-544.
Bas, H.G., 1993. The Combined Method In Measurements of Engineering (Photogrammetry and
Theodolite). The Journal of Istanbul Technical University, Vol. 51, No. 1, pp. 37-42.
Brown, D.C., 1985. Adapdation of the Bundle Method For Triangulation of Observations Made By
Digital Theodolites. Conference of Southern African Surveyors.
Ghosh, S.R., 1979. Analytical Photogrammetry. Pergamon Press Inc., U.S.A.
Grist, M.W., 1991. Close Range Measurement Using Electronic Theodolite Systems.
Photogrammetric Record, 13(77), pp. 721-729.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 51
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