Analisis Perbandingan Modul Low-cost GNSS Dengan Teknologi Lidar Untuk Monitoring Deformasi Tanggul Lumpur Lapindo Sidoarjo

Zein, Wildan Ihsanu Zein (2026) Analisis Perbandingan Modul Low-cost GNSS Dengan Teknologi Lidar Untuk Monitoring Deformasi Tanggul Lumpur Lapindo Sidoarjo. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Bencana Lumpur Sidoarjo yang berlangsung sejak tahun 2006 menimbulkan dampak lingkungan yang masif dan berkelanjutan, sehingga menuntut adanya pemantauan deformasi tanggul secara presisi dan berkala. Namun, penggunaan teknologi Global
Navigation Satellite System (GNSS) geodetik konvensional seringkali terkendala oleh tingginya biaya perangkat. Oleh karena itu, penelitian ini bertujuan menganalisis
perbandingan performa modul low-cost GNSS (Mosaic X5 RTK3B) dengan teknologi LiDAR (Terrestrial Laser Scanner Leica RTC360 dan Handheld LiDAR FJD Trion P1) dalam memantau deformasi tanggul. Pengukuran GNSS Geodetik (Trimble SPS855)
digunakan sebagai data referensi atau ground truth. Pengukuran lapangan dilakukan secara statik pada lima patok geser (PG12, PG17, PG32, PG39, dan PG50) di area tanggul. Data GNSS diolah menggunakan metode post-processing dengan perangkat lunak RTKLib dan RxLauncher, sedangkan pemindaian LiDAR diregistrasi menggunakan Cyclone REGISTER 360 dan Cloud Compare untuk menghasilkan model 3D tergeoreferensi.
Analisis komparasi dilakukan melalui pengujian statistik Root Mean Square Error (RMSE), Uji F, dan Uji T, serta perhitungan kecepatan deformasi menggunakan regresi linier. Hasil penelitian menunjukkan bahwa modul low-cost GNSS Mosaic X5 memiliki akurasi tinggi yang ekuivalen dengan GNSS geodetik, dengan RMSE terbaik pada titik P39 sebesar 0,009
m untuk sumbu North. Analisis laju deformasi mengindikasikan area P50, P39, dan P17 cenderung stabil (kecepatan pergeseran <15 mm/minggu), sedangkan titik P12 dan P32
mengalami pergeseran lateral agresif antara 78 hingga melampaui 180 mm. Seluruh instrumen juga mendeteksi anomali uplift sebesar 30 hingga 90 mm akibat bias eksternal.
Kesimpulannya, sistem low-cost GNSS terbukti andal, presisi, dan ekonomis sebagai alternatif solusi pemantauan deformasi tanggul.
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The Sidoarjo Mud Disaster that has been ongoing since 2006 has caused massive and continuous environmental impacts, thus demanding precise and regular monitoring of embankment deformation. However, the use of conventional geodetic Global Navigation Satellite System (GNSS) technology is often hampered by the high cost of the equipment. Therefore, this study aims to analyze the comparative performance of a low-cost GNSS module (Mosaic X5 RTK3B) with LiDAR technology (Terrestrial Laser Scanner Leica RTC360 and Handheld LiDAR FJD Trion P1) in monitoring embankment deformation.
Geodetic GNSS measurements (Trimble SPS855) are used as reference data or ground truth. Field measurements are carried out statically on five sliding stakes (PG12, PG17,
PG32, PG39, and PG50) in the embankment area. GNSS data was post-processed using RTKLib and RxLauncher software, while LiDAR scans were registered using Cyclone REGISTER 360 and Cloud Compare to generate georeferenced 3D models. Comparative analysis was performed using Root Mean Square Error (RMSE) statistical testing, F-Test, and T-Test, as well as deformation velocity calculations using linear regression. The results showed that the low-cost GNSS Mosaic X5 module has high accuracy equivalent to geodetic GNSS, with the best RMSE at point P39 of 0.009 m for the North axis. Deformation rate analysis indicated that areas P50, P39, and P17 tended to be stable (shift rate <15 mm/week), while points P12 and P32 experienced aggressive lateral shifts ranging from 78 to over 180 mm. All instruments also detected uplift anomalies of 30 to 90 mm due to external bias. In conclusion, the low-cost GNSS system has proven to be reliable, precise, and economical as an alternative solution for monitoring embankment deformation.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Deformasi; low-cost GNSS; Handheld LiDAR; Tanggul Lumpur Sidoarjo; Post-Processing
Subjects:	G Geography. Anthropology. Recreation > GB Physical geography > GB651 Subsidences (Earth movements) Q Science > QC Physics > QC100.5 Measuring instruments (General)
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29101-(S2) Master Thesis
Depositing User:	Wildan Ihsanu Zein
Date Deposited:	27 Jul 2026 06:19
Last Modified:	27 Jul 2026 06:19
URI:	http://repository.its.ac.id/id/eprint/138130

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