Mitigating the Impact of the Laser Footprint Size on Airborne Lidar Data Accuracy
نویسنده
چکیده
Airborne lidar technology is demonstrating outstanding results in generating high-accuracy spatial data for a wide range of terrestrial mapping applications. However, the data quality and accuracy achievable in real survey conditions depend on many different factors. The laser footprint size plays a crucial role in both the vertical and horizontal accuracy of the data collected over sloped or non-uniform terrain, as well as in the horizontal accuracy of break-lines. This study explores the application aspects of the interaction of the laser beam with sloped surfaces of a non-uniform terrain. It also suggests a new approach to mitigate the negative impact of the finite laser beam footprint size on airborne lidar data quality. The new approach will help lidar system users to maintain reasonable data accuracy regardless of the size of the footprint and the slope of the terrain. The data for this study was collected using airborne lidar equipment manufactured by Optech Incorporated.
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