G-LiHT LiDAR Point Cloud image, acquired over the University of Tennessee, Knoxville, TN, March 25, 2015.
View full-size imageGoddard’s LiDAR, Hyperspectral, and Thermal Imager (G-LiHT) mission is a portable, airborne imaging system that aims to simultaneously map the composition, structure, and function of terrestrial ecosystems. G-LiHT primarily focuses on a broad diversity of forest communities and ecoregions in North America, mapping aerial swaths over the conterminous United States (CONUS), Alaska, Puerto Rico, and Mexico.
The purpose of G-LiHT’s LiDAR Point Cloud data product (GLLIDARPC) is to provide high-density individual LiDAR return data, including 3D coordinates, classified ground returns, Above Ground Level (AGL) heights, and LiDAR apparent reflectance.
GLLIDARPC data are processed as a LAS Version 1.1 binary format specified by the American Society for Photogrammetry and Remote Sensing (ASPRS). The point cloud includes a density of more than 10 points per square meter. A low resolution browse is also provided showing the LiDAR Point Cloud as an Inverse Data Weighted (IDW) interpolation in PNG format.
Metadata for individual flights is available as a pdf file and can be accessed through the Documentation button on this landing page. It contains information related to flight plans, acquisition details, field observations, and instrument specifications.
| Characteristic | Description |
|---|---|
| Collection | G-LiHT |
| DOI | 10.5067/Community/GLIHT/GLLIDARPC.001 |
| File Size | ~250 MB |
| Temporal Resolution | Other |
| Temporal Extent | 2011-06-30 to Present |
| Spatial Extent | North America |
| Coordinate System | Universal Transverse Mercator (UTM) |
| Datum | World Geodetic System (WGS84) |
| File Format | LAS |
| Geographic Dimensions | Variable |
| Characteristic | Description |
|---|---|
| Number of Science Dataset (SDS) Layers | 1 |
| Columns/Rows | Variable |
| Pixel Size | ~1 m |
| SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|---|
| LiDAR Point Cloud | LiDAR Point Cloud | Meters | N/A | N/A | NaN | N/A | N/A |
Once available, detailed quality information for the GLLIDARPC product can be found on the G-LiHT website.