%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 << /QuickPDFFa6c8b490 79 0 R /QuickPDFF33173663 125 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 126 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:20170615105607+02'00') /ModDate (D:20170615105607+02'00') >> endobj 5 0 obj << /Length 3324 /LC /iSQP >> stream 0 Tr /QuickPDFF33173663 14 Tf 0 0 0 rg 100 Tz 0 Tw 0 Tc 0 Ts BT 1 0 0 1 106.1388 770.8329 Tm (Investigation of GNSS Receivers Accuracy Integrated on UAVs)Tj ET /QuickPDFF33173663 11 Tf 0 0 0 rg BT 1 0 0 1 163.4983 731.3912 Tm (eljko Bai, Danijel ugar and Roko Grzunov \(Croatia\))Tj ET /QuickPDFF33173663 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 689.6683 Tm 15.996 TL (Key words: )' ET /QuickPDFFa6c8b490 12 Tf 0 0 0 rg BT 1 0 0 1 141.7323 689.6683 Tm 15.768 TL (GNSS/GPS; Photogrammetry; Positioning; Standards; UAV, testing platform,)' (testing procedure, accuracy assessment, sensors)' ET /QuickPDFF33173663 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 647.1486 Tm 15.996 TL (SUMMARY)' ET /QuickPDFFa6c8b490 12 Tf 0 0 0 rg BT 1 0 0 1 56.6929 618.8021 Tm 15.768 TL (UASs \(Unmanned Aerial Vehicle\) find today their ever growing application for military,)' (commercial and personal purposes. The application of UAVs for creation of surveying products like)' (Digital Ortho Photo \(DOF\), 3D models, Digital Surface Models \(DSM\), Digital Terrain Models)' (\(DTM\) etc. is related to the accuracy attainable by GNSS receivers integrated on them.)' (Manufacturers of the UAVs usually do not provide detailed information about GNSS receiver's)' (accuracy and reliability what in turn has a direct impact on implementation of the UAVs in)' (surveying. Therefore, a special testing platform for assessment of the UAV GNSS receivers)' (accuracy was designed at the Faculty of Geodesy and a testing procedure was developed)' (accordingly. The platform design had to fulfill two fundamental requirements: the tested UAV)' (GNSS receiver should move on a precisely determined trajectory \(1\) whose size must be)' (significantly greater than the accuracy attainable by the GNSS receiver itself \(2\). The procedure)' (implemented on designed testing platform involved two geodetic GNSS receivers Trimble R8)' (\(Model 2\), one in PPK \(Post-Processed Kinematic\) and the other in static observation mode,)' (enabling the determination of UAV integrated GNSS receivers position of controlled trajectory)' (with cm-level accuracy. UAV GNSS receivers accuracy was tested on platform in static and)' (kinematic mode with 10 Hz frequency revealing the 1 m - level accuracy achieved by absolute)' (positioning method. The accuracy of coordinates determined with the GNSS receiver integrated on)' (DJI Phantom 3 Professional UAV was assessed and the results are presented in this paper.)' (Although, the GNSS receiver used within testing procedure operated in absolute positioning mode,)' (the presented testing platform and procedure is suitable for testing of GNSS receivers using RTK)' (positioning method. The research activities presented herein have paved the road to the accuracy)' (assessment procedure of other sensors integrated on UAVs like IMU \(Inertial Measuring Unit\).)' ET /QuickPDFFa6c8b490 10 Tf 0 0 0 rg BT 1 0 0 1 56.6929 150.7097 Tm 13.14 TL (__________________________________________________________________________________________)' ()' (Investigation of GNSS Receivers Accuracy Integrated on UAVs \(9060\))' (eljko Bai, Danijel ugar and Roko Grzunov \(Croatia\))' ()' (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 485 /Filter /FlateDecode >> stream xMSK%1)'y,m'ͦ `*-J#A%BF_x5gaN$X$79jlzR6;Vb1)ꆮe5U'Y I%($Ҝs*x5n(VXAH MhA{kq]'|=ڛ+X8ʞ$xmRJ)5_1,Ӂ*N1$r#R] D6@! o8jO(W{[(n?:{9މm(|꩟l \E} H +yCD dl<eܡN& .Fj[-F{u+JF3(u=g<뱅ZE0gpY3 :һȰCyC-adr*:[ҖAQp4 ;aaT}18 ¼-8LPsΣBj=q*ߖ{>r endstream endobj 7 0 obj << /Length 316 /Filter /FlateDecode >> stream xMRKnCAۿSpk`y^Uu[jIɒT%C/:b}Rx\%=
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