Abstract
The Global Navigation Satellite System (GNSS) has been used widely for hazards monitoring, such as landslide or material displacement on the slope due to its high accuracy and precision positioning. However, to assure its accuracy and precision, a further data quality and site assessment must be taken into account. In such a way, it is possible to determine whether the site monitoring is moved or not. Six location of GNSS observation points were established based on the geological structure and the terrain slopes. Satellite visibilities analysis, multipath analysis, and kinematic precise point positioning analysis were performed to assess the GNSS data quality and the monitoring stability. These procedures will determined the further processing scheme for each site monitoring. Some of areas experience the indication of cracks in road and building construction, which lead into an assumption of the displacement has been accumulated in a sub meter fraction. Thus, accounting all of those aspects, first adjustment data processing was implemented to achieve the preliminary results of the first observation.
Highlights
The Toll road is intended to shorten travel time with short and congestion-free routes
Kinematic Precise Point Positioning (KPPP) refers as an absolute point positioning which adopt the linear combination and other supporting product to reduce and eliminate the huge amount of error in the Global Navigation Satellite System (GNSS) signal propagation
Multipath usually occurred on the low elevation satellite angle, the significant multipath error occurred on the high elevation satellite angle on GPR1
Summary
The Toll road is intended to shorten travel time with short and congestion-free routes. The ability of vehicles to travel on toll roads is not the same because there are vehicles that carry goods with the maximum weight unable to pass the toll road with a minimum speed of 60km/hour. This situation causes vibration to the morphology of the surrounding area, including the slope. The Cipularang toll road connecting Bandung and Jakarta have high vehicle density and cause congestion. These conditions give the vibrations continuously and repeatedly. The GNSS data were first assess to ensure the quality of the data, some proccessing scheme was accounted to estimate the first network solution as a preliminary results
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