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In order to analyze the impact of attitude measurement errors (roll, pitch and yaw errors) on the positioning accuracy of laser footprints, the positioning principle of airborne Light Detection And Ranging (LiDAR) was analyzed and the transformation relationship between the attitude measurement errors and the positioning errors of laser footprints was deduced. Considering the actual complex terrain,...
The formulas for error propagation from the random error sources to the three-dimensional (3-D) coordinate errors of laser footprints of an airborne laser scanning (ALS) system were deduced. Based on large-scale sample data, multiple linear regression experiments were carried out to obtain the standardized regression coefficients of the random errors for the 3-D coordinate errors under different flight...
The impacts of various control errors and measurement errors of airborne LiDAR on laser point cloud were studied. Firstly, the principle of the Palmer-scan airborne LiDAR was analyzed. Then the transformation formulas, from the control errors and measurement errors of various parameters, such as attitude angles, flight trajectory and scan angle in airborne LiDAR system, to the three-dimensional (3D)...
The influence of random attitude measurement errors of the GPS/INS integrated system on the laser point cloud and the three-dimensional (3D) surface image reconstructed by the airborne laser scanner was studied. The mapping relationship between the attitude measurement errors and the positioning errors of the laser footprints was derived. By numerical simulation, three common terrains, i.e. a planar,...
A novel method for measuring the aerodynamic deformation of wings during fluttering in real-time by using a two-laser rangefinder is proposed for the first time, in which one laser is fixed above the plane and the other is fixed below the plane. Based on the distances between lasers and the diffuse reflector on wingtip, the wingtip displacement is geometrically calculated. The displacement of a certain...
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