遇见数据集

CT 2023 Elevation Lidar Intensity

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CT Geospatial Data Portal2026-03-23 更新2026-07-29 收录
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This image service is available through CTECO, a partnership between UConn CLEAR and CT DEEP. This layer is lidar point intensity covering the state of Connecticut. Lidar intensity is a measure of the return strength of each lidar point. Here, the points are converted to 1 foot pixels and values range from 1-256 where low numbers are low reflectivity and high numbers are high reflectivity. Intensity in influenced by reflectivity of the surface at the sensor wavelength (here, 1064nm which is near-infrared), view angle, range, surface composition, roughness, and moisture content and should therefore be used as a relative measure. Intensity is not influenced by sunlight or shadows. Visit the CT ECO Map and Image Services page for a complete list of available elevation services. Dataset Information Extent: Connecticut Dates: 2023 (March 27 - April 13), between snow melt and leaf out Data Info: statewide raster of lidar point density Pixel Resolution: 1 foot pixel raster derived from QL1+ Lidar point cloud with a minimum of 15 points per square meter inland and 20 points per square meter along the coast. Projection: CT State Plane NAD 83 (2011) Feet (EPSG 6434) Service Projection: WGS 1984 Web Mercator Auxiliary Sphere (EPSG 3857) More Information - All About the 2023 Data Collection (Imagery and Lidar) - All about Connecticut Lidar Elevation - Lidar Elevation on CT ECO Explained - Metadata xml format - Download DEM and points Credit and Funding

提供机构:
CT ECO
创建时间:
2025-06-25
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