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<p>Currently, Indonesia widely uses Global Navigation Satellite System (GNSS) technology to monitor land subsidence, both continuously and periodically. The main issue with continuous GNSS monitoring is the high cost of the receivers used. To address this challenge, a low-cost GNSS capable of continuous operation for land subsidence monitoring is necessary. This study aims to develop and evaluate a Low-Cost GNSS system for monitoring land subsidence in the Bandung Basin. The research methodology involves prototyping a low-cost GNSS system using a self-assembled U-Blox Chip-GNSS with a microstrip antenna. Observational strategies include radial and network methods over eight months. Analysis and discussion encompass prototyping aspects, observational data quality control, data processing, determination of subsidence rates, and comparison with results from Interferometric Synthetic Aperture Radar (InSAR) methods. The research findings indicate that all observation points experienced subsidence ranging from 9 to 16 cm per year. Radial and network methods show consistent trends with differences ranging between 1 to 2 cm. The GNSS results, which demonstrate patterns and magnitudes similar to those of InSAR data, validate the findings of this research.</p>

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Developing and evaluating low-cost GNSS to monitoring the land subsidence in Bandung Basin

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • Irwan Gumilar,
  • Teguh P. Sidiq,
  • Reza S. Shihran,
  • Yusuf Zidan,
  • Ben William,
  • Brian Bramanto,
  • Lisa A. Cahyaningtyas,
  • Hasanuddin Z. Abidin

摘要

Currently, Indonesia widely uses Global Navigation Satellite System (GNSS) technology to monitor land subsidence, both continuously and periodically. The main issue with continuous GNSS monitoring is the high cost of the receivers used. To address this challenge, a low-cost GNSS capable of continuous operation for land subsidence monitoring is necessary. This study aims to develop and evaluate a Low-Cost GNSS system for monitoring land subsidence in the Bandung Basin. The research methodology involves prototyping a low-cost GNSS system using a self-assembled U-Blox Chip-GNSS with a microstrip antenna. Observational strategies include radial and network methods over eight months. Analysis and discussion encompass prototyping aspects, observational data quality control, data processing, determination of subsidence rates, and comparison with results from Interferometric Synthetic Aperture Radar (InSAR) methods. The research findings indicate that all observation points experienced subsidence ranging from 9 to 16 cm per year. Radial and network methods show consistent trends with differences ranging between 1 to 2 cm. The GNSS results, which demonstrate patterns and magnitudes similar to those of InSAR data, validate the findings of this research.