Abstract
This paper describes a new approach for monitoring the construction progress of the Urban Railway Construction Project “Metro line1 - Ben Thanh - Suoi Tien” by using Unmanned Aerial Vehicles (UAV) to capture high resolution imagery at different stages of the project. The advantage of the AscTec Falcon 8 systems lies in their high flexibility and efficiency in capturing the surface of an area from a low flight altitude. In addition, further information such as orthoimages, elevation models and 3D objects can easily be processed by Pix4Dmapper software. The Ground Control Points (GCPs) and GIS data were used to compare the achieved accuracy of UAV method. This study shows the feasibility of using an UAV system for acquiring the high resolution aerial images and the new opportunities for managing construction progress over time.
Highlights
To develop remote imaging techniques that is able to provide high resolution, real-time images for social applications and economic development, as well as for national security applications is important items of Viet Nam’s strategy in space research and applications until 2020 officially approved by the Prime Minister in June 2006, according to the Decision number137/2006/QĐ-TTg
Recent experimental studies [1-6] showed that the shortcomings of above-mentioned imaging techniques can be overcome by the remote imaging system based upon unmanned air vehicle (UAV)
This study presents the experimental results of UAV for monitoring the construction progress of the Urban Railway Construction Project “Metro line1 - Ben Thanh - Suoi Tien”
Summary
To develop remote imaging techniques that is able to provide high resolution, real-time images for social applications and economic development, as well as for national security applications is important items of Viet Nam’s strategy in space research and applications until 2020 officially approved by the Prime Minister in June 2006, according to the Decision number. The high-resolution imaging system based on UAVs being capable of taking images of low altitudes ranging from 10m to 300m is highly demanded and promisingly applied in many social-economic applications, such as: hydraulic dam observation, urban management, environmental observation,. Satellite and Airborne image survey are valid techniques to capture data in broad area that the required measurement accuracy depends on relation to the object/area size. The use of UAVs is an opportunity for surveying that will be used where a need of high accuracy is required and fast data capturing is demanded
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