Rahmad, Andri Arie (2016) Analisa Perbandingan Pengolahan Data Stasiun Gps Cors Gunung Merapi Menggunakan Perangkat Lunak Ilmiah Dan Komersil. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Gunung Merapi merupakan salah satu gunung berapi yang paling aktif di Indonesia. Menurut Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG), letusan gunung berapi umumnya didahului dengan beberapa gejala seperti peningkatan aktivitas seismik, terjadinya deformasi, adanya perubahan temperatur, serta adanya perubahan harga percepatan gaya berat di kawasan gunung berapi. Pemantauan aktivitas gunung berapi dapat dilakukan dengan berbagai metode salah satunya adalah metode deformasi. Pemantauan deformasi gunung berapi menggunakan Continously Operating Reference Stations (CORS) merupakan metode yang sangat efektif karena dapat diamati secara kontinyu dan dapat dioperasikan dalam segala cuaca. Selain itu GPS CORS dapat menghasilkan data dengan ketelitian yang sangat tinggi hingga orde mm (milimeter). Untuk mendapatkan ketelitian yang tinggi, stasiun GPS CORS yang merupakan stasiun referensi GPS yang mengontrol GPS secara kontinyu sangat bergantung pada berbagai macam faktor salah satunya strategi pengolahan data. Untuk memberikan gambaran tingkat akurasi yang dihasilkan dari perangkat lunak pengolah GPS secara post-processing, peneliti menggunakan dua perangkat lunak yaitu perangkat lunak ilmiah (GAMIT/GLOBK 10.6) dan perangkat lunak komersil (Topcon Tools 8.2) yang
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diolah menggunakan dua metode konfigurasi jaring yaitu metode jaring tertutup dan metode radial. Dari hasil analisa yang dilakukan pada bulan Juli 2015, Pengolahan data GPS CORS Gunung Merapi dengan GAMIT/GLOBK memberikan tingkat hasil pengolahan data yang lebih presisi daripada pengolahan Topcon Tools. Dari uji statistik antara perangkat lunak pengolah data GPS ilmiah dan komersil didapatkan perbedaan ketelitian yang signifikan dengan rata-rata nilai standar deviasi hasil pengolahan GAMIT/GLOBK 10.6 adalah 3,155 mm sedangkan nilai rata-rata standar deviasi hasil pengolahan Topcon Tools adalah 1,195 cm. Sedangkan metode jaring dan radial tidak terdapat perbedaan yang signifikan. Selisih rata-rata standar deviasi pada pengolahan GAMIT/GLOBK antara metode jaring dan radial adalah 0,47 mm sedangkan pada pengolahan Topcon Tools selisih rata-rata standar deviasi antara metode jaring dan radial adalah 0,52 mm
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Mount Merapi is one of the most active volcanos in Indonesia. According to The Volcanology and Geological Disaster Mitigation Department (PVMBG), volcanic eruption is generally preceded by several symptoms as like making-up of seismik activity, deformation, temperature change, and gravity acceleration change in volcanic area. A monitoring of volcanic activity can be done by various methods, and one of them is deformation method. Deformation of volcano uses Continously Operating Reference Stations (CORS) as the most effective method, for it is easily to be monitored and it can be operated in all weather conditions. Besides, GPS CORS can show the data in higher detail of mm scale (milimeter). To get higher detail, GPS CORS station that stands as the GPS reference station which controls GPS continuously, depends much on the factors of data-processing strategy. To define the accuracy level of GPS software by post-processing, the researcher used scientific software GAMIT/GLOBK 10.6 and commercial software Topcon Tools 8.2 which were analyzed by using two network configuration methods. They are closed network method and radial network method. Based on conducted result analysis in July 2015, data processing of GPS CORS Mount Merapi using GAMIT/GLOBK
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showed that the storey level result had more precision in data processing than Topcon Tools processing. According to the statistical test between softwares of processor of scientific and commercial GPS, it was found out that the significant difference on the detail with assessed mean of standard deviasion result of processing GAMIT/GLOBK 10.6 was 3,155 mm, while average value of standard deviasion result on Topcon Tools processing was 1,195 cm. While closed network and radial methods didn’t show any significant differences. The difference of mean standard deviasion on processing GAMIT/GLOBK between the use of closed network and radial method was 0,47 mm. While on Topcon Tools processing, the difference of standard deviasion mean between closed network and radial method was 0,52 mm
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSG 623.893 Rah a |
| Uncontrolled Keywords: | GAMIT/GLOBK, GPS CORS, Post-Processing, Topcon Tools. |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) > G109.5 Global Positioning System |
| Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 21 Apr 2020 02:24 |
| Last Modified: | 21 Apr 2020 02:24 |
| URI: | http://repository.its.ac.id/id/eprint/75847 |
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