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LIDAR DATA ACQUISITION AND MEASUREMENT ACCURACY IN QC TOOLS USING MOBILE MAPPING SYSTEM TECHNOLOGY
Abstract
The work aims to acquire LiDAR data and checking the scan quality in QC Tools for Sanmihaiu Roman hydro technical arrangement located on the Bega Canal, Timis County, Romania, using mobile scanning technology MMS - Mobile Mapping System, using portable backpack equipment from Swiss manufacturer Leica, the Pegasus Backpack model. The Method of LiDAR Data Collection is a Fused Slam one, where, a Master Station has been located for the purchase of RiNEX data, using some GNSS receiver, the Leica GS 08. The raw data processing was done with the Pegasus Manager program, where the visualization of quality graphs was performed in QC Tools and the data processing was carried out with the Cyclone program, the modelling version (Model), using the SmartPick Point and Virtual Surveyor functions. The scanning accuracy was between 2 and 3 cm. SLAM simultaneous location and mapping technology with IMU (Inertial Measurement Unit) technology of high precision, ensures precise positioning when we have GNSS interruptions. From a technological point of view, MMS is a multi-sensor system consisting mainly of three components: mapping sensors (3D imaging systems), navigation/positioning sensors (IMU/GNSS) and a control unit, which synchronizes and integrates the acquisition of geomatic information, the trajectory of which is calculated.
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References14
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