%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 << /QuickPDFF51a29531 75 0 R /QuickPDFF7a7b56d8 121 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 122 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:20170615105934+02'00') /ModDate (D:20170615105935+02'00') >> endobj 5 0 obj << /Length 3276 /LC /iSQP >> stream 0 Tr /QuickPDFF7a7b56d8 14 Tf 0 0 0 rg 100 Tz 0 Tw 0 Tc 0 Ts BT 1 0 0 1 72.2798 770.8329 Tm (Analysis of Accuracy of Differential Global Positioning System \(DGPS\) and)Tj 1 0 0 1 210.3338 752.1709 Tm (Google Earth Digital Terrain)Tj 1 0 0 1 87.8338 733.5089 Tm (Model \(DTM\) Data using Geographic Information System Techniques)Tj ET /QuickPDFF7a7b56d8 11 Tf 0 0 0 rg BT 1 0 0 1 190.8498 703.0447 Tm (Jeremiah Richard and Chima Ogba \(Nigeria\))Tj ET /QuickPDFF7a7b56d8 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 661.3218 Tm 15.996 TL (Key words: )' ET /QuickPDFF51a29531 12 Tf 0 0 0 rg BT 1 0 0 1 141.7323 661.3218 Tm 15.768 TL (KEYWORDS: Field survey, Google Earth, DEM, Correlation analysis)' ET /QuickPDFF7a7b56d8 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 632.9753 Tm 15.996 TL (SUMMARY)' ET /QuickPDFF51a29531 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 604.6289 Tm 15.768 TL (Abstract)' ()' (The argument over the accuracy of DEM data from Google Earth as compared to DEM generated)' (from field survey have created a lot of uncertainty among research communities and even in the)' (field of geo sciences domain for various applications. To some SRTM DEM data deviation from)' (other DEM data may not support most application areas and others suggest that the deviation of)' (Google Earth DEM is reasonable to support most application areas including researches. This)' (research paper give an illumination of the level of relationship between field survey DEM and)' (Google Earth DEM carried out on a section of ADAMA farm project site located in Etche Local)' (Government Area, Rivers State, Nigeria. The study utilized field survey elevation data obtained)' (using Promark 3 DGPS at 50m x 50m grid interval and Google Earth elevation data obtained using)' (KML. The KML file was first created in ArcGIS 10.1 before exporting to Google Earth and the)' (elevation of each point was extracted using GPS visualizer. Spatial database was created from the)' (two elevation datasets and the following DEM surfaces; TIN, and contour map were produced. The)' (study concluded that TIN model produced from field survey and Google Earth elevation represent)' (uniform topographic surface but the major difference is the inability of Google Earth elevation to)' (show steep slope, a situation that was accounted for by field survey DEM. Also the linear)' (relationship between field survey elevation and Google Earth elevation data resulted in correlation)' (coefficient \(r\) 0.665 indicating perfect positive relationship as tested using Pearsons correlation)' (algorithm. DEM data from Google Earth elevation with improvement in technology may come to a)' (stage of no argument or if exist will be negligible for topographic modelling.)' ET /QuickPDFF51a29531 10 Tf 0 0 0 rg BT 1 0 0 1 56.6929 176.9897 Tm 13.14 TL (__________________________________________________________________________________________)' ()' (Analysis of Accuracy of Differential Global Positioning System \(DGPS\) and Google Earth Digital Terrain)' (Model \(DTM\) Data using Geographic Information System Techniques)' (\(8585\))' (Jeremiah Richard and Chima Ogba \(Nigeria\))' ()' (FIG Working Week 2017)' (Surveying the world of tomorrow - From digitalisation to augmented reality)' (Helsinki, Finland, May 29June 2, 2017)' ET endstream endobj 6 0 obj << /Length 316 /Filter /FlateDecode >> stream xMRKnCAۿSpk`y^Uu[jIɒT%C/:b}Rx\%=
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