Large-scale UAV-Lidar survey in the tropics

In Issue50 by FIEA

With a total length of 2,789km, the Trans-Sumatra Toll Road Project is one of Indonesia’s National Strategic Projects and the longest toll road project in Southeast Asia. In order to keep the project on track for the scheduled completion date of 2024, UAV-Lidar was chosen as the topographic data acquisition method, combined with building information modelling (BIM), to optimize the time planning and costs. Read on to learn more about this challenging project, which has included several obstacles.

The Trans-Sumatra Toll Road Project will connect cities in the north, south, east and west of Sumatra, the second most populated island of Indonesia. The Indonesian Government assigned this mega project to PT Hutama Karya as a state-owned enterprise company. The company has been tasked with not only constructing the Trans-Sumatra Toll Road, but also with financing, planning the construction work and ultimately operating it.

UAV-Lidar mapping: the right choice

In the search for the right mapping solution to carry out this immense project, Hutama Karya considered various options. Airborne Lidar was rapidly dismissed since the team concluded that the approach would meet neither accuracy expectations nor cost targets. Additionally, the use of aircraft would not allow the small-scale partial data acquisition needed for this project.

Hutama Karya therefore opted for UAV-Lidar mapping to offer the flexibility to adapt to the project size, dense vegetation and terrain as well as the accuracy, budget and scheduling requirements. From a survey perspective, using UAV-Lidar can reduce the acquisition time by an average of 13-15km/day compared with traditional land survey methods.

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Source: gim-international

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