Metadata: Identification_Information: Citation: Citation_Information: Originator: USDA-FSA-APFO Aerial Photography Field Office Publication_Date: 20111229 Title: NAIP Digital Ortho Photo Image Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Salt Lake City, Utah Publisher: USDA-FSA-APFO Aerial Photography Field Office Description: Abstract: This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S.. A primary goal of the NAIP program is to enable availability of of ortho imagery within one year of acquisition. NAIP provides four main products: 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP); 2 meter GSD ortho imagery rectified to within +/- 10 meters of reference DOQQs; 1 meter GSD ortho imagery rectified to within +/- 6 meters to true ground; and, 2 meter GSD ortho imagery rectified to within +/- 10 meters to true ground. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile. Purpose: 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 1 meter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The 1 meter NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies who use the imagery for a variety of purposes including land use planning and natural resource assessment. With an annual cycle, NAIP is also used for disaster response often providing the most current pre-event imagery. While suitable for a variety of uses the 2 meter GSD NAIP imagery is primarily intended to assess crop condition and compliance to USDA farm program conditions. The 2 meter imagery is generally acquired only for agricultural areas within state projects. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110530 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -80.1250 East_Bounding_Coordinate: -80.0625 North_Bounding_Coordinate: 37.5625 South_Bounding_Coordinate: 37.5000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: farming Theme_Keyword: Digital Ortho rectified Image Theme_Keyword: Ortho Rectification Theme_Keyword: Quarter Quadrangle Centered Theme_Keyword: NAIP Theme_Keyword: Aerial Compliance Theme_Keyword: Compliance Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: VA Place_Keyword: Craig Place_Keyword: 51045 Place_Keyword: VA045 Place_Keyword: CRAIG CO VA FSA Place_Keyword: 3708032 Place_Keyword: NEW CASTLE, SW Place_Keyword: NEW CASTLE Access_Constraints: There are no limitations for access. Use_Constraints: Imagery may be replaced to address defects found in a small number of products through quality assurance processes. Imagery containing defects that require the acquisition of new imagery, such as excessive cloud cover, specular reflectance, etc., will not be replaced within a NAIP project year. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Aerial Photography Field Office (APFO) Contact_Address: Address_Type: mailing and physical address Address: 2222 West 2300 South City: Salt Lake City State_or_Province: Utah Postal_Code: 84119-2020 Country: USA Contact_Voice_Telephone: 801-844-2922 Contact_Facsimile_Telephone: 801-956-3653 Contact_Electronic_Mail_Address: apfo.sales@slc.usda.gov Browse_Graphic: Browse_Graphic_File_Name: None Browse_Graphic_File_Description: None Browse_Graphic_File_Type: None Native_Data_Set_Environment: Unknown Data_Quality_Information: Logical_Consistency_Report: NAIP 3.75 minute tile file names are based on the USGS quadrangle naming convention. Completeness_Report: None Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: FSA Digital Orthophoto Specs. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USDA-FSA-APFO Aerial Photography Field Office Publication_Date: 20111229 Title: NEW CASTLE, SW Geospatial_Data_Presentation_Form: remote-sensing image Type_of_Source_Media: UnKnown Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110530 Source_Currentness_Reference: Aerial Photography Date for aerial photo source. Source_Citation_Abbreviation: Georectifed Image Source_Contribution: Digital Georectifed Image. Process_Step: Process_Description: Process_Description: Aerial photography acquired from April 4,2011 until July 14, 2011. Digital Mapping Cameras were utilized for direct digital image acquisition and no scanning conversion from film to digital was needed. The Z/I DMC - Frame Digital Mapping Camera - was utilized for the entire State. The DMC is a well-known digital aerial camera system manufactured by Z/I Imaging, Intergraph. There wwere (7) DMC cameras assigned and used for the acquisition of aerial photography for the entire State of Virginia. The configuration of aircraft and cameras is as follows: (1) Sanborn flew DMC Camera # 107, Code A7C5 with HW/FW Version # V02.01 and Piper Navajo aircraft tail # N278RC. (2) Sanborn flew DMC Camera # 109, Code A2C6 with HW/FW Version # V02.01 with AeroCommander500and aircraft tail # N9UB. (3) Sanborn flew DMC Camera # 146, Code A3C7 with HW/FW Version # V02.01 with Piper Navajo aircraft and tail # N27695. (4) Sanborn flew DMC Camera # 044, Code A6C8 with HW/FW Version # V02.01 with Piper Navajo aircraft and tail # N31PR. (5) RC&A flew DMC Camera # 104, Code ADCA with HW/FW Version # V02.01 with Piper Navajo and aircraft tail # N207MD. (6) RC&A flew DMC Camera # 131, Code A8CC with HW/FW Version # V02.01 with Piper Navajo aircraft and tail # N62923. (7) MJ Hardin flew DMC Camera # 161, Code AKCV with HW/FW Version # 06.03.00.18 with Cessna Conquest aircraft and tail # N441Cj. The DMC contains four panchromatic and four multispectral camera heads. The Spectral Ranges are as follows: NIR: 675-850 nm, RED: 590-675 nm, GREEN: 500-650 nm, BLUE: 400-580 nm. Sanborn provides orthoimagery with 3 bands for the project: R, G, B. The panchromatic heads are looking downwards in a slightly tilted position to ensure maximum ground coverage. The mounting of the panchromatic camera heads is modeled by four sets of six exterior orientation parameters, three positions xyz of projections centers and three orientation angles for the tilting of the heads inside the DMC cone. The positions xyz of the panchromatic camera projection centers within the DMC cone are precisely known. The determination of the mounting angles is essential for the performance of the DMC and is called ‘platform calibration’. Geometric and radiometric calibration for each one of the 8 camera heads is determined in the manufacturing laboratory. This step is also known as ‘geometric and radiometric calibration of a single camera head’ and done once when the DMC is being manufactured. The four (4) multi-spectral heads collect 4 separated bands: Red, Green, Blue and Near Infrared wavelength. The DMC collect 12bit data and its CCDs are 12 microns pixel size with frame (footprint) of 7,680 x 13,824 pixels. GSD distance is a 1:10,000 relationship to the flying height. For this project, the Piper Navajos and Aero Commander 500 aircraft flew at an average flight height of 6,700 to 8,600 meters above ground, allowing for image acquisition of 0.67 to 0.86 meters Ground Sample Distance. The Cessna Conquest flew at an average flying height of 9,100 meters above ground, allowing image acquisition of an average Ground Sample Distance of .87 meter. An INS - Inertial Navigation System, with AGPS (Airborne GPS) and IMU (Inertial Measurement Unit) was utilized for all aerial missions. The INS allows for accurate photo-center registration and image orientation. For inspection and verification of accuracy of the exterior orientation computed with the Inertial Navigation System, stereo compilation was performed for every flight mission and its result compared against higher accuracy source data. If a test of positional accuracy failed (> 5 meters) a full analytical triangulation is processed for that mission, assuring accurate horizontal positioning. USGS seamless NED data was used as a surface for ortho-rectification. Sanborn used proprietary software called METRO to rectify the scanned images. Rectification was done using cubic convolution resampling. Color balancing was then performed on each exposure. Sanborn's software tonally balanced each exposure to alleviate the effects of hotspots, side-to-side shading within an exposure, and tonal differences between flightlines due to dissimilar conditions at the time of capture. Each exposure was then balanced to predefined target values used throughout the project, creating a dataset consistent and uniform in radiometry. Seams between exposures were determined by Sanborns software to use the best exposure based on proximity to nadir and ground angle to the camera. Delivery tiles were then extracted from Sanborns seamlessimagery database, named to meet the DOQQ and/or DOQ naming convention, and formatted as defined in the task order. Horizontal accuracy was once again tested for 6-meter absolute accuracy. If necessary, a new aerotriangulation adjustment would be performed for the affected flight mission and new set of DOQQs produced. Quality control was performed on a sampling of each deliverable to ensure no artifacts or anomalies were present in the imagery. To produce compressed CCMs, the complete list of DOQQs contained within the CCM boundary are compressed using LizardTech MrSID software at a 15:1 compression rate. The resulting CCM is a 8bit, 3-band product. CCMs are output in the NAIP assigned UTM Zone. If necessary, some DOQQs may be reproduced in an adjactent UTM zone for the purpose of compatibility with the assigned CCM zone. Process_Date: 20111229 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Craig County, VA Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 1 Column_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -81.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 (GRS 80) Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: 32-bit pixels, 4 band color(RGBIR) values 0 - 255 Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Supervisor Customer Services Section Contact_Organization: USDA-FSA-APFO Aerial Photography Field Office Contact_Address: Address_Type: mailing and physical address Address: 2222 West 2300 South City: Salt Lake City State_or_Province: Utah Postal_Code: 84119-2020 Country: USA Contact_Voice_Telephone: 801-844-2922 Contact_Facsimile_Telephone: 801-956-3653 Contact_Electronic_Mail_Address: apfo.sales@slc.usda.gov 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). Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTIFF - Georeferenced Tagged Image File Format Format_Information_Content: Multispectral 4-band Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Mode 1 Level 2 Extensions Fees: Contact the Aerial Photography Field Office for more information Resource_Description: m_3708032_sw_17_1_20110530_20110913.tif Metadata_Reference_Information: Metadata_Date: 20111229 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USDA-FSA-APFO Aerial Photography Field Office Contact_Address: Address_Type: mailing and physical address Address: 2222 West 2300 South City: Salt Lake City State_or_Province: Utah Postal_Code: 84119-2020 Country: USA Contact_Voice_Telephone: 801-844-2922 Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998