Metadata: Identification_Information: Citation: Citation_Information: Originator: USDA-FSA-APFO Aerial Photography Field Office Publication_Date: 20120112 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). 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. 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 and 1/2 meter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The 1 meter and 1/2 meter 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. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20100501 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -117.0625 East_Bounding_Coordinate: -117.0000 North_Bounding_Coordinate: 32.5625 South_Bounding_Coordinate: 32.5000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: farming Theme_Keyword: Digital Ortho rectified Image Theme_Keyword: Ortho Rectification Theme_Keyword: Quarter Quadrangle Theme_Keyword: NAIP Theme_Keyword: Aerial Compliance Theme_Keyword: Compliance Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: CA Place_Keyword: San Diego Place_Keyword: 06073 Place_Keyword: CA073 Place_Keyword: SAN DIEGO CO CA FSA Place_Keyword: 3211732 Place_Keyword: IMPERIAL BEACH, SE Place_Keyword: IMPERIAL BEACH 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. 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: 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 where; Indiana, Minnesota, New Hampshire, North Carolina, Texas, Vermont, and Virginia. From 2009 to present all NAIP imagery acquisitions used the +/- 6 meters to ground specification. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USDA-FSA-APFO Aerial Photography Field Office Publication_Date: 20120112 Title: IMPERIAL BEACH, SE 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: 20100501 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 photography acquired from April 24, 2010 until September 30, 2010. Aerial photography was acquired using a frame based digital camera (UltraCamD (UCD), UltraCamX (UCX), or DMC), therefore no scanning conversion from film to digital was needed. Geometric and radiometric calibration for each one of the 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 when the sensor is being manufactured. The 4 multispectral heads collect 4 separated bands: Red, Green, Blue and Near Infrared wavelength. Both the UltraCam and DMC sensors collect 12bit data. The UCD sensor CCD pixel size is 9 micron with a footprint of 7500 pixels in the long track, and 11500 pixels in the cross track. The UCX sensor CCD pixel size is 7.2 micron with a footprint of 9420 pixels in the long track, and 14430 pixels in the cross track. The DMC sensor CCD pixel size is 12 micron with a footprint of 7680 pixels in the long track, and 13824 pixels in the cross track. Twin Engine Navajo and Malibu, Turbo Commander and Cessna 320 and Cessna Conquest aircraft were used, flying at average flight height of 6,500 to 8,500 meters above ground, allowing image acquisition of 0.40 to 0.67 meters Ground Sample Distance. 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. Sanborns 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. Satellite imagery was also used to supplement aerial imagery to complete up to 12 DOQQ tiles for which suitable airborne imagery was unavailable. The supplemental satellite imager was acquired using GeoEye-1. GeoEye-1 scenes were acquired from GeoEye. Sensor model and orientations were supplied. The raw data has a sub-meter pixel resolution and provided in 4 bands: Red, Green, Blue and Near Infrared wavelength. USGS seamless 2009 NED (National Elevation Data) was used as surface for ortho-rectification. Sanborn utilized commercial software called OrthoPRO, form Z/I Intergraph, to ortho-rectify the digital satellite images. The rectified images were then integrated into Sanborn proprietary software called METRO. The final production processes then followed the same procedures as described above for the aerial photography. Process_Date: 20120112 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: San Diego County, CA 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: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -117.0 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 Offline_Option: Offline_Media: DVD-R Recording_Format: ISO 9660 Offline_Option: Offline_Media: USB Hard Disk Recording_Format: NTFS Offline_Option: Offline_Media: FireWire Hard Disk Recording_Format: NTFS Fees: Contact the Aerial Photography Field Office for more information Resource_Description: m_3211732_se_11_1_20100501_20100914.tif Metadata_Reference_Information: Metadata_Date: 20120112 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