%PDF-1.4 % 1 0 obj << /Type /Pages /Count 1 /Kids [ 2 0 R ] >> endobj 2 0 obj << /Type /Page /Parent 1 0 R /Resources << /ProcSet [ /PDF /Text /ImageB /ImageC /ImageI ] /Font << /QuickPDFFb8ce26f5 72 0 R /QuickPDFFb1c4131b 118 0 R >> >> /Contents [ 5 0 R ] /MediaBox [ 0 0 595.2756 841.8898 ] /CropBox [ 0 0 595.2756 841.8898 ] >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Metadata 119 0 R >> endobj 4 0 obj << /Producer (Debenu Quick PDF Library 11.15 \(www.debenu.com\)) /Creator (Debenu Quick PDF Library 11.15 \(www.debenu.com\)) /CreationDate (D:20180514134017+02'00') /ModDate (D:20180514134017+02'00') >> endobj 5 0 obj << /Length 3225 /LC /iSQP >> stream 0 Tr /QuickPDFFb1c4131b 14 Tf 0 0 0 rg 100 Tz 0 Tw 0 Tc 0 Ts BT 1 0 0 1 170.8538 770.8329 Tm (On Optimization of Six-Segment Baselines)Tj ET /QuickPDFFb1c4131b 11 Tf 0 0 0 rg BT 1 0 0 1 23.2373 731.3912 Tm (Weifang Yang, Jinmei Wang, Haowen Yan, Dean of faculty of Geomatics, Wei Guojun and Yang Guolin \(China, PR\))Tj ET /QuickPDFFb1c4131b 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 689.6683 Tm 15.996 TL (Key words: )' ET /QuickPDFFb8ce26f5 12 Tf 0 0 0 rg BT 1 0 0 1 141.7323 689.6683 Tm 15.768 TL (Standards)' ET /QuickPDFFb1c4131b 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 661.3218 Tm 15.996 TL (SUMMARY)' ET /QuickPDFFb8ce26f5 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 632.9753 Tm 15.768 TL (Additive constant and scale correction are two important corrections for systematic errors of)' (Electronic Distance Meters \(EDMs, including total stations\). Therefore, it is of great significance to)' (increase their calibration precision. Field baselines have been wildly used in engineering surveying)' (to calibrate EDMs. There are three types of baselines, i.e. Schwendener-Heerbrugg, Aarau and)' (Hobart. As far as each type of baseline is concerned, a number of design options are available for)' (the baselines with different stations. A reasonable balance between cost and precision is obtained)' (with six to seven stations. Golomb rules provide four design options for the six station baselines and)' (five options for the seven station baselines. Even as far as only one design option is concerned,)' (distances may have many different kinds of combinations. Could the same instrument get the same)' (calibration result using different combinations under the same length? Which combination is the)' (best? )' ()' (This paper answers the above questions. Firstly, it introduces the most commonly used seven)' (station \(also called six-segment \) comparative method for calculating the standard deviations of)' (additive constant and scale correction from a least squares adjustment . Secondly, it studies and)' (analyzes the layout schemes with different distance combination, using an example of a 768 meter)' (long field baseline in Gansu Province of China. The total number of layout schemes with different)' (combination distances is 322. Then the determination precision, which is the standard deviation of)' (additive constant and scale correction of different layout schemes, is calculated and demonstrated.)' (Finally, the optimized schemes of field baseline distance arrangement are suggested among 322)' (ones. The demonstrated results show that 322 schemes have different standard deviations of)' (additive constant and scale correction, and thus, optimized schemes are those with lower standard)' (deviations.)' ET /QuickPDFFb8ce26f5 10 Tf 0 0 0 rg BT 1 0 0 1 56.6929 150.7097 Tm 13.14 TL (__________________________________________________________________________________________)' ()' (On Optimization of Six-Segment Baselines \(9449\))' (Weifang Yang, Jinmei Wang, Haowen Yan, Dean of faculty of Geomatics, Wei Guojun and Yang Guolin \(China, PR\))' ()' (FIG Congress 2018)' (Embracing our smart world where the continents connect: enhancing the geospatial maturity of societies )' (Istanbul, Turkey, May 611, 2018)' ET endstream endobj 6 0 obj << /Length 316 /Filter /FlateDecode >> stream xMRKnCAۿSpk`y^Uu[jIɒT%C/:b}Rx\%=
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