Debby Rio Prasetyo
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Pembuatan Digital Elevation Model Resolusi 10m dari Peta RBI dan Survei GPS dengan Algoritma ANUDEM Indarto .; Debby Rio Prasetyo
Jurnal Keteknikan Pertanian Vol. 2 No. 1 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.1.%p

Abstract

AbstractThis study proposes the generation of Digital Elevation Model (DEM) with spatial resolution of 10m x 10m by re-interpolation of elevation data. Data input for this study includes: (1) digitized datum coordinate from RBI map, (2) sample points surveyed by GPS, (3) digitized contour data fromSRTM DEM and ASTER GDEM2, and (4) digitized stream-network layer from RBI. All collected data were converted to mass point coordinats. On the top of Topogrid-ArcGIS, all points data were interpolated to produce DEM. After that the produced DEM were compared and evaluated to the SRTM and ASTER DEMvisually. The result shows that produced DEM are more accurate to represent the detailed topography of the study areas.Key words: DEM 10m, GPS survey, Interpolation, SRTM-DEM, Aster-GDEM2.AbstrakPenelitian ini bertujuan untuk membuat DEM dengan ketelitian spasial 10m (ukuran pixel 10m x 10m) dengan cara re-interpolasi data ketinggian.Input data yang digunakan mencakup: (1) digitasi titik-titikketinggian dari peta RBI, (2) hasil survei melalui GPS, (3) data kontur yang diperoleh dari peta DEM SRTM dan Aster GDEM2, dan (4) layer jaringan sungai. Metodologi penelitian terdiri dari: (1) inventarisasidata, (2) ekstraksi nilai ketinggian, (3) integrasi data ke dalam Topogrid–ArcGIS, (4) interpolasi DEM. Hasil interpolasi selanjutnya dievaluasi secara visual dan dibandingkan dengan DEM SRTM dan ASTER GDEM2. Hasil interpolasi menunjukkan DEM dengan resolusi spasial yang lebih detail (10 m x 10 m) dapat menggambarkan karakteristik topografi DAS lebih detail.Kata kunci: DEM 10m, Survei GPS , Interpolation, SRTM-DEM, Aster-GDEM2Diterima: 12 Desember 2013; Disetujui: 14 Maret 2014