bronzová úroveň ověřený automaticky US beta
Úroveň certifikace: bronzová úroveň 24 October 2015 Co to v praxi znamená: Datová sada splňuje základní požadavky na otevřená data.
Airborne terrestrial LiDAR was collected for St. Johns County, FL. System Parameters/Flight Plan. The LiDAR system acquisition parameters were developed based on a maximum average ground sample distance of 2.1 feet. A Leica ALS50 LiDAR sensor was used for acquisition. Acquisition specifications for the sensor follows: Field of View (full angle) - 24 degrees, Nominal flight altitude (AGL) - 3000 feet, Airspeed - 130 mph (113 knots), Laser pulse rate - 100,000 Hz, Nominal swath width (on ground) - 1275 feet, Maximum cross track point spacing - 2.07 feet, Maximum along track point spacing - 4.30 feet, Average point spacing - 1.67 feet, Flight line spacing - 970.47 feet, Side overlap - 23.91 percent. LiDAR System Calibration. Prior to the LiDAR acquisition, the system underwent a calibration to verify the operational accuracy and misalignment angles. Boresight calibrations were performed for the LiDAR system at the beginning and end of each flight mission. LiDAR Data Acquisition. LiDAR data acquisition only occurred when the sky was sufficiently clear of clouds, smoke, and atmospheric haze. The LiDAR data was processed immediately after the acquisition to verify the coverage had no voids. GPS/Inertial Measurement Unit (IMU) Post Processing. The GPS and IMU data was post processed using differential and kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project. LiDAR Processing and Classification. The LiDAR data was post processed and verified to be consistent with the project requirements in terms of post spacing and absence of artifacts. The point cloud underwent classification to determine bare-earth points (class 2), noise points (class 7), water returns (class 9), and unclassified data (class 1). Class 12 contains LiDAR points removed from the overlap region between adjacent flight lines.
http://catalog.data.gov/dataset/2008-st-johns-county-fl-countywide-lidar65786 Do you think this data is incorrect? Let us know
National Oceanic and Atmospheric Administration, Department of Commerce Do you think this data is incorrect? Let us know
http://catalog.data.gov/dataset/2008-st-johns-county-fl-countywide-lidar65786 Do you think this data is incorrect? Let us know
Creative Commons CCZero Do you think this data is incorrect? Let us know
yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know
Creative Commons CCZero Do you think this data is incorrect? Let us know
nehraje roli, data se netýkají fyzických osob Do you think this data is incorrect? Let us know
http://catalog.data.gov/organization/noaa-gov Do you think this data is incorrect? Let us know
no Do you think this data is incorrect? Let us know
data jsou zálohována offsite Do you think this data is incorrect? Let us know
http://catalog.data.gov/api/rest/package/2008-st-johns-county-fl-countywide-lidar65786 Do you think this data is incorrect? Let us know
název Do you think this data is incorrect? Let us know
popis Do you think this data is incorrect? Let us know
hlavní URL Do you think this data is incorrect? Let us know
URL dokumentace Do you think this data is incorrect? Let us know
četnost aktualizací Do you think this data is incorrect? Let us know
poskytovatel Do you think this data is incorrect? Let us know
distribuce Do you think this data is incorrect? Let us know
datum vydání Do you think this data is incorrect? Let us know
datum poslední změny Do you think this data is incorrect? Let us know
související časové období Do you think this data is incorrect? Let us know
související geografické území Do you think this data is incorrect? Let us know
datum vydání Do you think this data is incorrect? Let us know
URL pro přístup k datům Do you think this data is incorrect? Let us know
URL datové sady Do you think this data is incorrect? Let us know
http://catalog.data.gov/dataset/2008-st-johns-county-fl-countywide-lidar65786 Do you think this data is incorrect? Let us know
http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/2008-st-johns-county-fl-countywide-lidar65786 Do you think this data is incorrect? Let us know