{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Jeffrey R Irwin", "hasEmail": "mailto:jrirwin@usgs.gov"}, "description": "Airborne light detection and ranging (lidar) can provide high-quality topographic information over large areas.  Lidar is an active remote sensing technology that employs laser ranging in near-infrared and green spectral wavelengths to provide three-dimensional (3D) point information for objects, including Earth\u2019s surface, vegetation, and infrastructure.  The U.S. Geological Survey (USGS) National Geospatial Program (NGP) 3D Elevation Program (3DEP) seeks to systematically acquire airborne topographic lidar for the conterminous U.S. (conus), Hawaii, and the U.S. territories.  A series of field accuracy assessment surveys, using conventional surveying methods (i.e. total station and Global Navigation Satellite System (GNSS)) along with ground based lidar (GBL), were conducted at test sites in Northeastern Illinois (NEIL) to evaluate the 3D absolute and relative accuracy of airborne lidar acquired for 3DEP.", "distribution": [{"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.5d9cdf50e4b03661629239aa.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}, {"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9CVRD1X", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5d9cdf50e4b03661629239aa", "keyword": ["Ground Based Lidar", "State of Illinois", "NGP Elevation Applied Research", "location", "Lake County, Illinois", "GNSS", "National Geospatial Program", "3D Elevation Program", "Light Detection and Ranging", "Global Navigational Satellite System", "Lake Michigan", "Illinois Beach State Park", "geoscientificInformation", "U.S. Geological Survey", "Total Station", "3DEP", "elevation", "USGS", "Lidar", "Shiloh Park", "USGS:5d9cdf50e4b03661629239aa"], "modified": "2020-08-18T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-87.83420, 42.40950, -87.80050, 42.48900", "theme": ["geospatial"], "title": "Northeastern Illinois (NEIL) Six County Airborne Lidar Validation Survey Data"}