m_3209055_ne_15_030_20211113 eng; USA utf8 dataset USDA-FSA Aerial Photography Field Office 801-844-2922 801-956-3653 125 S. State Street Suite 6416 Salt Lake City UT 84138 USA apfo.sales@slc.usda.gov Monday through Friday 8:00 AM to 5:00 PM pointOfContact 2021-11-13 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) point NAIP Digital Orthophoto (DOQQ - quarter-quadrangle) m_3209055_ne_15_030_20211113 2022-03-04 publication DOQQs Surdex Corporation originator USDA-FSA Aerial Photography Field Office Salt Lake City Utah publisher This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs. Ortho imagery provides an effective, intuitive means of communication about farm program administration between FSA and stakeholders. New technology and innovation is identified by fostering and maintaining a relationship with vendors and government partners, and by keeping pace with the broader geospatial community. As a result of these efforts the NAIP program provides three main products: DOQQ tiles, Compressed County Mosaics (CCM), and Seamline shape files. The Contract specifications for NAIP imagery have changed over time reflecting agency requirements and improving technologies. These changes include image resolution, horizontal accuracy, coverage area, and number of bands. In general, flying seasons are established by FSA and are targeted for peak crop growing conditions. The NAIP acquisition cycle is based on a minimum 3 year refresh of base ortho imagery. The tiling format of the NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 pixel buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using the North American Datum of 1983. NAIP imagery may contain as much as 10% cloud cover per tile. NAIP imagery is available for distribution within 60 days of the end of a flying season and is intended to provide current information of agricultural conditions in support of USDA farm programs. For USDA Farm Service Agency, the 30 or 60 centimeter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies that use the imagery for a variety of purposes including land use planning and natural resource assessment. The NAIP is also used for disaster response. While suitable for a variety of uses, prior to 2007 the 2 meter GSD NAIP imagery was primarily intended to assess "crop condition and compliance" to USDA farm program conditions. The 2 meter imagery was generally acquired only for agricultural areas within state projects. completed USDA-FSA Aerial Photography Field Office 801-844-2922 801-956-3653 125 S. State Street Suite 6416 Salt Lake City UT 84138 USA apfo.sales@slc.usda.gov Monday through Friday 8:00 AM to 5:00 PM pointOfContact irregular None None None Farming Digital Ortho Rectified Image Ortho Rectification Quarter Quadrangle NAIP Aerial Compliance Compliance theme None MS USA place Geographic Names Information System otherRestrictions otherRestrictions Access Constraints: There are no limitations for access. Use Constraints: None. The USDA-FSA Aerial Photography Field Office asks to be credited in derived products. Distribution Liability: In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it). grid eng; USA Native Dataset Environment: ArcGIS 10.4.1 -90.192168 -90.119782 32.183824 32.254164 Ground Condition 2021-11-13 false Entity and Attribute Information Entity and Attribute Overview: 8-bit pixels per band, 0-255, 4-band RGBiR Entity and Attribute Detail Citation: None Digital Orthorectified Quarter Quad Supervisor Customer Services Section USDA-FSA Aerial Photography Field Office 801-844-2922 801-956-3653 125 S. State Street Suite 6416 Salt Lake City UT 84138 USA apfo.sales@slc.usda.gov distributor Contact the USDA-FSA Aerial Photography Field Office for information. Ordering Instructions: Contact the USDA-FSA Aerial Photography Field Office for information. cdRom iso9660 Horizontal Positional Accuracy This product as a whole meets 4m CE95 or better positional accuracy RMSEr. NAIP horizontal accuracy specifications have evolved over the life of the program. From 2003 to 2004 the specifications were as follows: 1-meter GSD imagery was to match within 3-meters, and 2-meter GSD to match within 10 meters of reference imagery. For 2005 the 1-meter GSD specification was changed to 5 meters matching the reference imagery. In 2006 a pilot project was performed using true ground specifications rather than reference imagery. All states used the same specifications as 2005 except Utah, which required a match of +/- 6 meters to true ground. In 2007 all specifications were the same as 2006 except Arizona used true ground specifications and all other states used reference imagery. In 2008 and subsequent years no 2-meter GSD imagery was acquired and all specifications were the same as 2007 except approximately half of the states acquired used true ground specifications and the other half used reference imagery. The 2008 states that used absolute ground control were; Indiana, Minnesota, New Hampshire, North Carolina, Texas, Vermont, and Virginia. Beginning in 2009, all NAIP imagery acquisitions used the +/- 6 meters to ground and in 2016 the specification was changed to +/- 4 meters to true ground. 4 None NAIP 3.75 minute tile file names are based on the USGS quadrangle naming convention. DOQQ Production Process Description; USDA FSA APFO NAIP Program 2021; The imagery was collected using the following digital sensors: Vexcel Condor M4.1 (435S72614X210073), Vexcel Condor M4.1 (435S02814X419065), Vexcel Condor M4.1 (435S52516X011066), Vexcel Condor M4.1 (435S72218X819057), Vexcel Condor M4.1 (435S32618X113078), Cameras are calibrated radiometrically and geometrically by the manufacturer. Collection was performed using a combination of the following twin-engine aircraft with turbines flying at 17,000 ft above mean terrain. Plane types: C441 Conquest Rockwell Commander 690 Cessna Caravan Tail numbers: N113RF, N881HJ, N940U, N441MD, N690EH, N331RF, With this flying height, there is a 30% sidelap, giving the data nominal ground sampling distance and rectified to 30cm. Based-upon the CCD Array configuration present in the Condor sensor, imagery for each flight line is 48,460-pixels in width. Red, Green, Blue, Near-Infrared and Panchromatic image bands were collected. The Vexcel Condor has the following band specifications at 40% intensity: Red 585-690, Green 570-600, Blue 425-530, Near Infrared 700-830, all values are in nanometers. Flight planning was performed in IGI Plan over a buffered boundary covering DOQQ extents provided by the USDA. A 500m reduced resolution DEM file was used to determine ground heights. A targeted flight altitude of approximately 17,000 feet above ground level for native 15 cm image acquisition with sidelap of 30% was used for flight planning parameters. Multiple aircraft were utilized for acquisition, the seamline shapefile clarifies which aircraft were used for a given area. All aircraft were equipped with Vexcel Condor systems where utilized for data capture. The Vexcel Condor sensor has been calibrated by the manufacturer as well as validated against a local calibration range. The calibration includes measuring the radiometric and geometric properties of the camera. This data is used in the Post Processing Software to eliminate the radiometric and geometric distortion. All aerial imagery was collected with associated GPS/IMU data. Condor collection requires high quality IMU data for processing and was critical for early access hosting of digital data to the web for USDA interim access and review. After early access web delivery was complete, all imagery was triangulated using Vexcel Ultramap in which the airborne GPS data was constrained to expected limits. To validate the accuracy of the block adjustment derived from GPS/IMU, sensor parameters and conjugate point measurements, photo identifiable ground control points were field surveyed within each State. These points were surveyed using GPS techniques to produce coordinates that are accurate to +/- 0.25 meters RMSE in XYZ. The GPS surveying techniques utilized assured that the coordinates are derived in the required project datum and relative to an approved National Reference System. Once the block has proper statistics and fits the control to specifications, the final bundle adjustment was made. The final adjustments assure a high quality relative adjustment and a high quality absolute adjustment limited to the airborne GPS data accuracy. This process assures the final absolute accuracy of all geopositioned imagery. Both signalized and photo identified ground control were used to QC and control the IMU/GPS based aerial triangulation bundle block solution. Surdex Grouping Tool provides real-time updates of the USDA APFO Image Metrics. The image technician adjusts image correction parameters to bring the radiometric characteristics of large groups of images within the Image Metrics ranges. For each project area the highest resolution DEM or LiDAR was obtained and utilized for rectification of captured imagery. A visual inspection of the final DEM using color cycled classification by elevation and a shaded relief was performed to check for gaps, corruption and gross errors. The predicted horizontal error for each point was added as an attribute in the SURDEX enterprise database. An operator reviews ortho seams in areas these predicted errors indicate horizontal error in excess of the contract specifications. Any imagery errors introduced by source DEM required patching from an alternate perspective or strip of photography. Processing hardware used included various brands of survey grade GPS receivers, various brands and models of computers, RAID6 storage, calibrated monitors, various brands of monitor calibration colorimeters. Vexcel Ultramap was used for post processing of Condor data, and triangulation. SURDEX software was used to orthorectify, color correct, and remove bidirectional reflectance, vignetting and other illumination trends. USDA APFO Image Metrics are measured and images corrected to conform to the Image Metrics using SURDEX software. GPS/IMU data was reduced to projected coordinates in the appropriate UTM zone using Applanix POSPac. SURDEX software was used to calculate the optimal seam path, check seam topology and create master tiles. SURDEX ortho software generates occlusion/smear polygons used during seam review of steep terrain. SURDEX software was used to visually inspect master tiles for seam and image defects. SURDEX software was used to project and cut final DOQQ image files from masters. SURDEX software was used to create CCM metadata. Lizardtech GeoExpress version 10.0.1.5035 was used to create the CCM image file. SURDEX software was used to perform final formatting, QC and naming of the DOQQ. USGS metadata parser software was used to validate the metadata. Various versions of Microsoft Windows were used in all phases of production. Grouping Tool was used again after DOQQ and CCM production to provide a quality assurance check. Individual DOQQ and CCM may not meet the USDA APFO Image Metrics ranges due to land cover. The goal is to have the state as a whole meet the Image Metrics. All products are reviewed by independent personnel prior to delivery. The delivery is checked for omissions, commissions, naming, formatting, specification compliance and data integrity. None USDA-FSA Aerial Photography Field Office 801-844-2922 801-956-3653 125 S. State Street Suite 6416 Salt Lake City UT 84138 USA Monday through Friday 8:00 AM to 5:00 PM processor This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadatastandard version FGDC-STD-001-1998 using the January 2013 version of the FGDC CSDGM to ISO 19115-2 transform. USDA-FSA Aerial Photography Field Office 801-844-2922 801-956-3653 125 S. State Street Suite 6416 Salt Lake City UT 84138 USA apfo.sales@slc.usda.gov Monday through Friday 8:00 AM to 5:00 PM custodian