a34a3dd6-2ea6-4af2-9b92-3a2b06a2828e_source eng; USA utf8 dataset CAST, University of Arkansas 479-575-6159 JBHT 304, 1 University of Arkansas Fayetteville AR 72701 US cast@uark.edu pointOfContact 2020-01-06 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) 2 row 17433 column 14444 area complex 916 asdi.IMAGERY.NHAP_AR_QUAD_INDEX 2019-09-01 publication CAST, University of Arkansas originator mapDigital This metadata describes the 81cm pixel resolution, historical (1980s) orthophotography produced for the U.S. Department of Agriculture (USDA) - Natural Resources Conservation Service (NRCS) by the Center for Advanced Spatial Technologies (CAST), University of Arkansas. The ortho product provided is 3-band CIR, 8-bit per pixel and delivered in USGS 24k quad tiles (with a 100m buffer) as uncompressed GeoTIFF and compressed (10:1 using JPEG compression) GeoTIFF formats. This orthophotography is published in Universal Transverse Mercator Zone 15N, NAD83, meters, EPSG:26915. Source aerial photography was collected between 1980 and 1986 at a scale of 1:58,000 as part of the National High Altitude Photography (NHAP) program. More information about NHAP can be found at https://doi.org/10.5066/F7M043NG. Mixing photography from multiple dates was avoided as much as possible, therefore each tile is an orthomosaic composed of at least three overlapping aerial photos that were captured on one date (likely seconds apart). However, systematic differences in radiometry do exist between some adjacent orthophotos and between adjacent flight lines due to different conditions at the time of exposure (date of capture, flight direction, sun angle). No color or histogram matching was attempted and pixel values within these orthomosaics closely match the original pixel values captured during the scanning process. Rectified orthophotography for the State of Arkansas may serve as a basemap for GIS applications. Research was sponsored by the U.S. Department of Agriculture (USDA) - Natural Resources Conservation Service (NRCS). The Center for Advanced Spatial Technologies (CAST), University of Arkansas collaborated directly with, and delivered results and reports to, the Fort Worth, Texas NRCS office. completed CAST, University of Arkansas pointOfContact notPlanned Arkansas, Photography, Orthophotography, Ortho, Imagery, NHAP, historical theme None Arkansas place None otherRestrictions Use Constraints: None otherRestrictions Access Constraints: None vector eng; USA imageryBaseMapsEarthCover Native Dataset Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.0.8321 -94.625000 -89.625000 32.999996 36.500000 1980-01-01 1986-12-31 true dataset Horizontal Positional Accuracy Report Horizontal accuracy 7.5m RMSE Horizontal Positional Accuracy Check point RMSE during photogrammetric adjustment. meters This lineage was generated by the FGDC CSDGM to 19139 transformation unknown This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2019-08-12T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. CAST, University of Arkansas 479-575-6159 JBHT 304, 1 University of Arkansas Fayetteville AR 72701 US cast@uark.edu pointOfContact