研究目的
Designing and evaluating a plane-based calibration field for determining the lever arm and boresight angles of a 2D laser scanner w.r.t. a GNSS/IMU unit on a mobile platform, and establishing an evaluation environment for mobile laser scanning systems.
研究成果
The paper concludes that the designed plane-based calibration field provides accurate and controlled calibration parameters for mobile laser scanning systems. The evaluation environment, consisting of a network of control points and TLS reference point clouds, allows for effective empirical evaluation of the systems. The study demonstrates that the accuracy of the mobile laser scanning system can be specified with an RMS of <10 mm for the east, north, and height components under the measuring conditions in the evaluation environment.
研究不足
The study acknowledges the complexity and partially unknown processing chain of mobile laser scanning systems, which makes rigorous modeling of system accuracy challenging. The evaluation environment's effectiveness is dependent on the structure of the measured object, and certain errors may not be detectable in all scenarios.
1:Experimental Design and Method Selection:
The study uses tools from geodetic configuration analysis to design and evaluate a plane-based calibration field. The methodology involves analyzing the impact of random, systematic, and gross observation errors on the calibration process.
2:Sample Selection and Data Sources:
The study utilizes a mobile laser scanning system and a network of control points and TLS reference point clouds for evaluation.
3:List of Experimental Equipment and Materials:
The equipment includes a mobile laser scanning system with a 2D laser scanner and GNSS/IMU unit, TLS for reference point clouds, and a network of control points.
4:Experimental Procedures and Operational Workflow:
The calibration procedure involves scanning a designed plane setup with the mobile laser scanning system and comparing the results with TLS reference point clouds. The evaluation involves comparing the system's output with control points and TLS reference point clouds.
5:Data Analysis Methods:
The study employs geodetic configuration analysis, Monte Carlo simulations, and statistical tests to analyze the accuracy and controllability of the calibration parameters.
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