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Central Coast 2006

FGDC XML
Identification Information
Citation Information
Originator Cumberland County Area, Maine, GIS Coordinator
Publication Date 20060426
Title Central Coast 2006
Abstract This OGC-compliant web mapping service (WMS) provides 6" pixel resolution orthoimagery of the central coastal Maine towns from Saco to Bath. This WMS is provided by the Maine Office of GIS and the Maine GeoLibrary Board. As the prime contractor, Bradstreet Consultants, Inc. used the aerial photography flown in two sessions on April 21st and 26th, 2006, by Richard Crouse & Associates, Inc. of Frederick, MD who acquired approximately 1335 photos @ 1"=600' with airborne GPS using a Wild RC-30 (#13261) aerial camera. Bradstreet Consultants, Inc. painted and repainted ground targets for photo survey control points (~200) to support full analytical aerotriangulation. The aerotriangulation solution was used to set up each stereopair of photos for orthorectification and DTM compilation. The ortho imagery was created by scanning (14 microns (um) per pixel or 1815 dpi) the original 1"=600' scale film and employing a digital terrain model (DTM) from updating some town's original DTM and some town's from scratch using the 1"=600' scale negatives or diapositives using both analytical and softcopy (digital) stereoplotter in the Kork KDMS format.
Purpose Use in GIS for viewing and analysis along with sale to surveying, engineering, GIS and other intersted individuals and companies.
Time Period of Content
Calendar Date 20060422
Time of Day unknown
Currentness Reference ground condition
Status
Progress Complete
Maintenance and Update Frequency None planned
Bounding Coordinates
West Bounding Coordinate -70.36
East Bounding Coordinate -70.08
North Bounding Coordinate 43.73
South Bounding Coordinate 43.63
Keywords
Theme ImageryBaseMapsEarthCover (ISO Keyword Thesaurus)
Access Constraints none
Use Constraints Data should not be used beyond the scale of 1:2400.
Contact Person Mark Bradstreet
Contact Organization Bradstreet Consultants
Contact Position President
Address Type mailing and physical address
Address 69 Peters Road
City Searsmont
State or Province Maine
Postal Code 04973
Country USA
Contact Voice Telephone 207-621-8500
Contact Electronic Mail Address markb@bradstreet.com
Data Set Credit Data Set Produced by Bradstreet Consultants, Inc., 69 Peters Road, Searsmont, ME04973 www.bradstreet.com
Native Data Set Environment Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.1850
Completeness Report Orthoimagery for Portland, Maine clipped to within about 100 feet beyond the town line.
Horizontal Positional Accuracy Report Horizontal_Positional_Accuracy_Report: Gound control used in aerotriangulation solution accurate to within 0.1 ft. Said solution was used to compile 1:1200 vector base mapping, which was subsequently used to control the orthorectification process. Vector data was compiled to meet ASPRS Class 1 accuracy standards. The orthorectification process was applied to the imagery and those features which are at ground level. No attempt was made to correctly rectify elevated structures as part of this project.
Horizontal Positional Accuracy Explanation Comparison to Source
Vertical Positional Accuracy Report Gound control used in aerotriangulation solution accurate to within 0.1 ft. Said solution was used to compile terrain data to support generation of 2 foot contour data. This elevation data was subsequently used to control the orthorectification process. The elevation data was compiled to meet ASPRS Class 1 accuracy standards. The orthorectification process was applied to the imagery and those features which are at ground level. No attempt was made to correctly rectify elevated structures as part of this project.
Source Scale Denominator 6000
Type of Source Media Aerial photography film
Calendar Date 20060422
Time of Day unknown
Source Currentness Reference ground condition
Process Description Bradstreet Consultants, Inc. used the aerial photography flown in two sessions on April 21st and 26th, 2006, by Richard Crouse & Associates, Inc. of Frederick, MD who acquired approximately 1335 photos @ 1"=600' with airborne GPS using a Wild RC-30 (#13261) aerial camera. Bradstreet Consultants, Inc. painted and repainted ground targets for photo survey control points (~200) to support full analytical aerotriangulation. The aerotriangulation solution was used to set up each stereopair of photos for orthorectification and DTM compilation. The ortho imagery was created by scanning (14 microns (um) per pixel or 1815 dpi) the original 1"=600' scale film and employing a digital terrain model (DTM) from updating some town's original DTM and some town's from scratch using the 1"=600' scale negatives or diapositives using both analytical and softcopy (digital) stereoplotter in the Kork KDMS format.
Contact Person Mark Bradstreet
Contact Organization Bradstreet Consultants
Contact Position President
Direct Spatial Reference Method Raster
Raster Object Type Pixel
Row Count 
Column Count 
Grid Coordinate System Name 
SPCS Zone Identifier Maine West NAD83
Horizontal Datum Name North American Datum of 1983
Contact Person Mark Bradstreet
Contact Organization Bradstreet Consultants
Contact Position President
Address Type mailing and physical address
Address 69 Peters Rd
City Searsmont
State or Province Maine
Postal Code 04973
Country USA
Contact Voice Telephone 207-621-8500
Contact Electronic Mail Address markb@bradstreet.com
Resource Description Web Mapping Services (WMS)
Distribution Liability These services have been successfully tested in ArcGIS, MapInfo, Google Earth, QGIS, gvSIG, Gaia and uDig.
Network Resource Name http://www.maine.gov/geolib/wms.htm
[accinstr]  A WMS is not a web application which you can see in a web browser; rather, it requires you to add the service to a GIS software application.
Metadata Reference Information
Metadata Date 20090602
Metadata Contact
Contact Person Mark Bradstreet
Contact Organization Bradstreet Consultants
Contact Position President
Address Type mailing and physical address
Address 69 Peters Rd
City Searsmont
State or Province Maine
Postal Code 04973
Country USA
Contact Voice Telephone 207-621-8500
Contact Electronic Mail Address markb@bradstreet.com
Metadata Standard Name FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Access Constraints none
Metadata Use Constraints none
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