Metadata: Identification_Information: Citation: Citation_Information: Originator: USDA-FSA-APFO Aerial Photography Field Office Publication_Date: 20111118 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: 20110704 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -92.9375 East_Bounding_Coordinate: -92.8750 North_Bounding_Coordinate: 42.0000 South_Bounding_Coordinate: 41.9375 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: IA Place_Keyword: Marshall Place_Keyword: 19127 Place_Keyword: IA127 Place_Keyword: MARSHALL CO IA FSA Place_Keyword: 4109201 Place_Keyword: LAUREL, NE Place_Keyword: LAUREL 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: 20111118 Title: LAUREL, NE 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: 20110704 Source_Currentness_Reference: Aerial Photography Date for aerial photo source. Source_Citation_Abbreviation: Georectifed Image Source_Contribution: Digital Georectifed Image. Process_Step: Process_Description: Aerial Services utilized Leica Geosystems Flight Planning Evaluation Software (FPES) to create the flight planning for the digital camera flights. The flights were flown at an average flight height of 20570 feet above ground with a 65cm gsd. Each line had 25% sidelap with the adjacent lines. A Navajo N35AS and Cheyenne N522AS aircrafts were used on the project. The planes carried Leica digital camera ADS80-SH82 systems with sensors SN1300 and SN1301. Each camera has been calibrated by Leica. Certification and calibration data is on file at Leica Geosystems. ADS80-SH82, SN1300 certification number: 763806_1300_090130-1. ADS80-SH82, SN1301 certification number: 763806_1301_080926-1. Firmware and software is FCMS Flight and Sensor Control Management System Ver 323. Each line is approximately 12,000 pixels wide and 200,000 pixels long. The Leica camera collects 11 bands of imagery at 16 bit. Leica ADS80 Spectral Range and filters are the following: Panchromatic trapezoidal 465-680 nm, Red rectangular 608-662nm, Green rectangular 533-587nm, Blue rectangular 428-492nm, Near-infrared rectangular 833-887nm. ASI extracts 3 bands of panchromatic for use in the aero-triangulation. Four nadir bands (RGBN) are extracted to be used in rectification. Each camera uses Novetel OEM4 GPS units to collect IMU data. Upon completion of flight lines the imagery is reviewed in the field/office to ensure it meets contract specifications. ABGPS/IMU data is processed using Leica IPAS Pro and GrafNav programs. The aero-triangulation was completed with the ABGPS/IMU data only. Pass-points were generated at 5% intervals along each line and 7 regions across each flight line. Tie-points were generated at 5% intervals with 2 regions between flight lines. Analysis of report documents as well as visual inspection along imagery line overlaps are completed to ensure accuracies of the aero-triangulation. Thirty Meter NEDs were downloaded from the USGS Data Gateway website for use on this project. Ortho rectification was completed using Leica XPRO software version 4.4. The NEDs and local lidar were used for the elevation data in the ortho production. An initial review of the raw orthos against control points was completed at this stage. One hundred sixty seven control points were used as check control on the project. The points were photo id points in the project state. A final accuracy check was completed on the final DOQQS. The RMSE values were 1.37 meters a NSSDA value of 2.37. Once the data passed accuracy requirements, Inpho OrthoVista (4.4 and 4.5) was used for seaming the ortho lines together and adjusting the tones of the imagery. The DOQQs were cut and renamed directly from OrthoVista program. At this stage the DOQQs are output as 8 bit imagery. Once the DOQQs were cut a batch file was used to assign the majority date of the DOQQ imagery to the file name. Contractor made all attempts to match tone requirements of the project. Variations of the ground cover may cause some deviation from the specifications. ASI designed a batch routine to check and adjust the tones of each DOQQ to the desired tone values. DOQQs and CCMs were reviewed in either Erdas Imagine or ESRI ArcMap. Each data set was reviewed for tone, artifacts, seamline issues, and accuracy. Lizardtech GeoExpress (7.0.3) was used to create the CCM image file. Each mosaic was made with RGB bands and has an approximate 1:15 compression level. CCM metadata was created using Arcmap and routines from our database. Erdas Imagine is used to insert headers into the files and create the aux files for the data. Exported dxf seamlines from OrthoVista were taken into ArcMap 10 to generate seamline polygons. Each polygon was populated with the required attributes. CCM data was written to CD/DVD using Gear Software. DOQQs were transported on internal hard drives. Hardware used on the project includes the following but not limited to: Windows environment, primarily Dell computers, 1GB network cables, Isilon IQ 12000 Storage device with 150 usable TB of data, 4 Sun Microsystems Sunfire X2250 Processing Servers and 2 Del PowerEdge R610 Processing Servers. Process_Date: 20111118 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Marshall County, IA 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: 15 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -93.0 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_4109201_ne_15_1_20110704_20110929.tif Metadata_Reference_Information: Metadata_Date: 20111118 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