Abstract
The 3D Elevation Program (3DEP) has created partnership opportunities to increase the collection of high-resolution elevation data across the United States, eventually leading to complete coverage of high-resolution, three-dimensional (3D) information from light detection and ranging (lidar) data across the entire country (interferometric synthetic aperture radar in Alaska). While 3DEP data are collected at different times and by varying producers, the assumption is that the use of the 3DEP Lidar Base Specification will provide standardized and consistent data across data collections. Another assumption is that the integration of lidar data into the seamless digital elevation models increases the accuracy of the derived products. This study tests these assumptions and updates some of the accuracy metrics that were done on previous versions of the standard products.
Highlights
The 3D Elevation Program (3DEP) is a partnership program designed to accelerate the rate of three-dimensional (3D) elevation data collected across the United States to address a wide range of needs
We found several issues that users need to be aware of when attempting to use all the lidar point cloud data together as ‘big data.’
This article attempts to answer questions about the consistency and ability to use all the lidar point cloud data as a single entity, and it updates the accuracy assessment of the seamless elevation models originally conducted by Gesch et al [12]
Summary
The 3D Elevation Program (3DEP) is a partnership program designed to accelerate the rate of three-dimensional (3D) elevation data collected across the United States to address a wide range of needs. The NEEA study recommended the collection of (1) high-quality light detection and ranging (lidar) data for the conterminous. United States (CONUS), Hawaii, and the U.S territories and (2) interferometric synthetic aperture radar (IfSAR) data for Alaska. Ranging from immediate safety of life, property, and environment to long-term planning for infrastructure projects [2], 3DEP provides elevation data that informs critical decisions that are made across our Nation every day. The National Elevation Dataset (NED) was the primary elevation data product produced and distributed by the U.S Geological Survey (USGS). The NED provided seamless raster bare earth elevation data of the CONUS, Alaska, Hawaii, U.S
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