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Title: ACCURACY MEASUREMENT DETERMINATION ON DIFFERENT DISTANCES USING GEODETIC NETWORK MEASUREMENT AND ADJUSTMENT
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ACCURACY MEASUREMENT DETERMINATION ON DIFFERENT DISTANCES USING GEODETIC NETWORK MEASUREMENT AND ADJUSTMENT
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1314-2704
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English
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19
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2.2
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The paper focuses on the experimental determination of the accuracy of automatic angular targeting of total stations. The measurements were carried out with Trimble S6 HP and Trimble S8 HP robotic total stations owned by the Department of Special Geodesy at the Faculty of Civil Engineering, CTU in Prague. Accuracy of targeting was determined with use of both laboratory and outdoor experimental geodetic networks. The laboratory micronetworks were two. One was made up of 10 points with a length of sight from 1.8 m to 3.1 m, and the other consisted of 6 points with sight lengths from 2.3 m to 5.3 m. The outdoor network was made up of 6 points with a length of 30 m. The geodetic measurements were carried out from each point to all the other neighboring points of the network, as a target was used the Leica mini prism GMP101. Accuracy of automatic targeting was then determined by the least squares adjustment method with use of the GNU Gama software. The resulting aposteriori standard deviations of horizontal directions, zenith angles and slope distances characterize the accuracy of automatic targeting and measurement, at very short lengths of sights were achieved higher (worse) values of standard deviations than the manufacturer stated. At larger distances in the outdoor network, the standard deviations responded the manufacturer's parameters. The results verify the functionality and accuracy of the automatic targeting, while pointing to the need to consider worse accuracy for short lengths. It is also an interesting and reliable way of verifying (or directly determining) the achievable accuracy in conditions corresponding to the situation of use and therefore the reliability of the derived standard deviations is very high.
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conference
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19th International Multidisciplinary Scientific GeoConference SGEM 2019
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19th International Multidisciplinary Scientific GeoConference SGEM 2019, 30 June - 6 July, 2019
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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25-30
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30 June - 6 July, 2019
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website
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cdrom
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5468
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total stations; automatic targeting; standard deviation; geodetic micronetworks; least square adjustment
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