Identification_Information: Citation: Citation_Information: Originator: USDA-FSA Aerial Photography Field Office Publication_Date: 20070104 Title: NAIP 2007.lyr Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Salt Lake City, Utah Publisher: USDA FSA Aerial Photography Field Office Online_Linkage: http://mapserver.maine.gov/wms/mapserv.exe?map=c:/wms/orthos.map& 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 ortho imagery within one year of acquisition. NAIP provides two 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); and, 2 meter GSD ortho imagery rectified to within +/- 10 meters of reference DOQQs. 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. The NAIP imagery here are provided via an OGC-compliant web mapping service (WMS) by the Maine Office of GIS and the Maine GeoLibrary Board. Purpose: NAIP imagery may be distributed on an interim basis to meet USDA program requirements. The interim product is a compressed county mosaic. Users should be aware that the interim compressed county mosaic may contain defects and have horizontal accuracy less than the specified tolerances. Defective imagery may be replaced within one year of image acquisition date. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Currentness_Reference: Majority years of Photography Dates. Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: 485456.000000 East_Bounding_Coordinate: 597748.000000 North_Bounding_Coordinate: 5247514.000000 South_Bounding_Coordinate: 5045256.000000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Digital Georectified Image Theme_Keyword: Mosaic Theme_Keyword: Georeferenced Image Theme_Keyword: Quarter Quadrangle Centered Theme_Keyword: Georectification Theme_Keyword: compression Theme_Keyword: MrSID Theme_Keyword: NAIP Theme_Keyword: Compliance Theme_Keyword: Aerial Compliance Theme_Keyword: Farming Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Maine Place_Keyword: Aroostook Place_Keyword: Aroostook CO Maine FSA Place_Keyword: FIPS 23003 Access_Constraints: None Use_Constraints: None, The Originator asks to be credited in derived products. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USDA-FSA 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: 801-975-3500 Contact_Facsimile_Telephone: 801-975-3529 Browse_Graphic: Browse_Graphic_File_Name: None Browse_Graphic_File_Description: None Browse_Graphic_File_Type: None Data_Set_Credit: USDA Aerial Photography Field Office Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.1850 Data_Quality_Information: Logical_Consistency_Report: None Completeness_Report: None Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: FSA Digital Orthophoto Specs. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: N/A 2d only Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Aerial Photography Field Office Publication_Date: 20070104 Title: Aroostook, Maine Source_Scale_Denominator: 40000 Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: Majority Aerial Photography Date Source_Citation_Abbreviation: MrSID compressed image Source_Contribution: Mosaicked County Image Process_Step: Process_Description: Color Digital imagery was collected with a Leica ADS40 Digital Sensor. The ADS40 CCD array includes 12,000 pixels across track at 6.5 microns. The digital imagery was acquired with a minimum of 20% sidelap, then processed using Leica software to produce geo-referenced raster swaths. The ADS imagery is subsequently used in the Aerial Triangulation (AT) process in preparation for orthorectification. The horizontal accuracy of the orthorectified imagery is primarily determined by the quality of the airborne GPS, Inertial Measurement Unit (IMU) data and the surface model (digital elevation model or DEM). The AT process is initiated with the population of ADS project files with ABGPS/IMU data, horizontal control from USDA furnished mosaicked DOQQs (mDOQQs) and vertical control picked from the USGS DTED2 DEM data. IMU rotational data is checked by reading common points on the mosaicked DOQQs and on the new imagery. As a final check, stereo models are analyzed for parallax. The absolute orientations for each swath containing exterior orientation parameters for scan line is then output for use in orthorectification. Each DOQQ is inspected for relative horizontal accuracy with adjacent DOQQ tiles. Each DOQQ is inspected for image quality. DOQQs are color and radiometrically balanced over a block consisting of a large number of images. A sample of DOQQs is selected and inspected for relative horizontal accuracy with the USDA furnished mDOQQs. Completed and approved DOQQs are assembled into a countywide MrSID file, using a compression factor of 1:50. Process_Date: 20070104 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Aroostook, Maine Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 101129 Column_Count: 56146 Vertical_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: 19 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -69.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 2.000000 Ordinate_Resolution: 2.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: 24-bitpixels, 3 bandcolors (RGB) representing brightness values 0 - 255. Entity_and_Attribute_Detail_Citation: USDA-FSA Aerial Photography Field Office Contract Specifications. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Supervisor Sales Services Branch Contact_Organization: USDA-FSA 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: 801-975-3500 Contact_Facsimile_Telephone: 801-975-3529 Resource_Description: OGC-compliant web mapping service provided by the Maine Office of GIS and the Maine GeoLibrary Board. The URL is: http://mapserver.maine.gov/wms/mapserv.exe?map=c:/wms/orthos.map& 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: Compressed County Mosaic Format_Information_Content: Natural Color Transfer_Size: 1082.990 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: None Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Fees: None Ordering_Instructions: http://datagateway.nrcs.usda.gov/ Turnaround: online ordering Custom_Order_Process: To download actual NAIP data, users must visit the USDA data gateway: http://datagateway.nrcs.usda.gov/ Metadata_Reference_Information: Metadata_Date: 20090305 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USDA-FSA Aerial Photography Field Office Contact_Person: REQUIRED: The person responsible for the metadata information. 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: 801-975-3500 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile