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LiDAR Testing Under Heavy Tree Canopy and in Steep Terrain.
| 题名： | LiDAR Testing Under Heavy Tree Canopy and in Steep Terrain. |
| 作者： | Reed, T. R. |
| 关键词： | Alaska; Calibration; Canopies; Data Acquisition; Digital Systems; Global Positioning System; Light Detection And Ranging(lidar); Mapping; Optical Radar; Surveys; Terrain; Testing; Topography; Transpor |
| 摘要： | The objective of this project was to evaluate the accuracy of light detection and ranging (LiDAR) for topographic information in support of a transportation project for the Alaska Department of Transportation & Public Facilities (Department). In particular, accuracy in steep terrain and varied vegetative cover was evaluated. LiDAR acquisitions in Southeast Alaska were compared to RTK GPS survey acquisition. Comparison of the LiDAR to ground survey showed significant differences for the Ketchikan to Shelter Cove project evaluated, this may be due to vertical datum issues, improper geoid model selection, post-processing methods that were not sensitive enough, inaccurate GPS readings, improperly located GPS base stations, calibration report inaccuracy, and extremely thick vegetation canopy. By comparison, areas with less steep terrain, less dense vegetation, and better controlled LiDAR compared more favorably to the ground survey points. |
| 报告类型： | 科技报告 |
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