Usriyah, Baisus Sa'adatul (2021) Analisis Perbandingan Hasil DTM Metode Hydro Enforcement Data LiDAR dengan Interferometric Synthetic Aperture Radar (InSAR) dari Citra Satelit Radar (Studi Kasus: Kabupaten Kebumen). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Untuk mendukung sejumlah aktivitas seperti pembangunan, perencanaan tata ruang, pemodelan bencana, perencanaan mitigasi bencana, estimasi produktifitas lahan dll diperlukan data yang memuat informasi ketinggian muka tanah. Informasi mengenai ketinggian muka tanah tersebut dapat disajikan dalam model 3 dimensi rupabumi yang biasa disebut Digital Elevation Model (DEM). DEM ini terdiri dari dua macam yaitu Digital Terrain Model (DTM) yang memuat informasi permukaan tanah kosong beserta dengan penambahan data pengamatan dan Digital Surface Model (DSM) yang memuat informasi permukaan tanah beserta objek diatasnya seperti bangunan, vegetasi, dll. Data DTM kemudian dapat diekstrak menjadi peta kontur atau peta topografi yang memuat informasi ketinggian permukaan tanah. DTM juga digunakan untuk menyediakan informasi ketinggian dalam pembentukan peta RBI. Terdapat beberapa teknologi yang dapat dimanfaatkan untuk membentuk data DTM, dua diantaranya adalah dengan memanfaatkan lidar dan satelit radar (Sentinel-1). Untuk pengolahan DTM dengan data LiDAR dapat digunakan metode hydro enforcement sedangkan untuk pengolahan DTM data radar dapat digunakan metode InSAR. Dalam pembentukan DTM, dilakukan beberapa tahap penambahan data untuk agar hasil DTM tersebut lebih representatif terhadap keadaan sebenarnya, sehingga perlu diperhatikan juga metode untuk melakukan penambahan tersebut terutama pada wilayah berperairan. Hasil dari penelitian ini adalah nilai ketelitian geometri vertikal DTM terhadap data RBI 1:25.000. Dalam penelitian ini berhasil dibentuk 5 macam DTM dengan nilai ketelitian vertikal LE90 adalah sebagai berikut: DTM LiDAR dengan LE90 4,614 m ; DTM InSAR dengan LE90 9,583 m ; DTM InSAR breakline dengan LE90 9,433 m ; DTM InSAR asimilasi RBI dengan LE90 2,532 m ; dan DTM asimilasi LiDAR dengan LE90 4,077 m.
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To support a number of human activities such as development planning, spatial planning, disaster modelling, disaster mitigation planning, land productivity estimation, etc., data containing information about terrain elevation model is needed. Information about the elevation of the ground can be presented in a 3-dimensional topographical model which is commonly called the Digital Elevation Model (DEM). This DEM consists of two types, there are Digital Terrain Model (DTM) which contains information of the land surface along with the addition of observation data like a breaklines and the Digital Surface Model (DSM) which contains information of the ground surface and objects on it such as buildings, vegetation, etc. The DTM data can be extracted into a contour map or a topographic map. DTM are also used to provide elevation information for the formation of RBI maps. There are several technologies that can be used to form DTM data, two of them are by using lidar and radar satellites (Sentinel-1). For processing DTM with LiDAR data, the hydro enforcement method can be used, while for processing DTM radar data, the InSAR method can be used. In the formation of the DTM, several steps were taken to add data to make the results of the DTM more representative with tha real condition, so it is necessary to pay attention to the method for making these additions, especially in watery areas. The result of this research is the value of vertical geometry accuracy of DTM to RBI 1 25.000 data. In this research, 5 kinds of DTM have been successfully formed with LE90 vertical accuracy values are as follows : LiDAR DTM with LE90 4,614 m; InSAR DTM with LE90 9,583 m ; DTM InSAR breakline with LE90 9,433 m ; DTM InSAR RBI assimilation with LE90 2,532 m ; and LiDAR assimilation DTM with LE90 4.077 m.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Digital Terrain Model (DTM), Hydro Enforcement, Interferometric Synthetic Aperture Radar (InSAR), Light Distance and Ranging (LiDAR), Sentinel-1 |
| Subjects: | G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography > GA139 Digital Elevation Model (computer program) T Technology > T Technology (General) > T57.5 Data Processing T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image processing--Digital techniques T Technology > TA Engineering (General). Civil engineering (General) > TA590 Topographical surveying |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Baisus Sa'adatul Usriyah |
| Date Deposited: | 12 Aug 2021 06:35 |
| Last Modified: | 12 Aug 2021 06:35 |
| URI: | http://repository.its.ac.id/id/eprint/85611 |
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