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Horizons, Inc. was contracted by the Bismarck-Mandan Metropolitan Planning Organization to provide accurate 6\" pixel resolution color digital orthophotography, update 2 1/2 sections of existing 2' contour data and collect new DTM data for the generation on 2' contours on 39 new sections. The project encompassed an area of approximately 197 square miles. A Leica ADS40 Digital Camera system including an inertial measuring unit (IMU) and a dual frequency airborne GPS receiver was used for the digital image acquisition. Imagery acquisition was performed on April 17th and April 22nd of 2005 at 4800' AMT. Ground control survey was conducted by Kadrmas, Lee and Jackson of Bismarck, North Dakota. A survey report summarizing methodology and results was submitted in hardcopy and a digital file in PDF format. GPS data was collected on two new monuments and 11 existing MPO monuments. The resulting coordinates for each new station are referenced to NAD 83(96) datum in North Dakota State Coordinate System, South Zone (3302). The horizontal units were international feet. The GPS Orthometric Heights were determined by calculating the Ellipsoid-Geoid separation using Geoid 99 model and are based on NGVD 1929 international feet. The existing DTM data which Horizons had collected in 2001 was updated to support 2' contours where requested. New mapping was performed on 40 sections and an additional 30 sections of DTM collection was done for ortho rectification only. Contour were generated from the updated and new DTM data and delivered in ARC Shape file format in one contiguous file. The DTM data including breaklines, random points and spot elevation points were also delivered in ARC Shape file format. Color digital orthophotos in TIFF format with .TWF files were produced with a resolution of 6\" utilizing the ADS40 imagery and the updated DTM. <\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "name": "Imagery/AerialImage_BisMan_2005", "description": "

Horizons, Inc. was contracted by the Bismarck-Mandan Metropolitan Planning Organization to provide accurate 6\" pixel resolution color digital orthophotography, update 2 1/2 sections of existing 2' contour data and collect new DTM data for the generation on 2' contours on 39 new sections. The project encompassed an area of approximately 197 square miles. A Leica ADS40 Digital Camera system including an inertial measuring unit (IMU) and a dual frequency airborne GPS receiver was used for the digital image acquisition. Imagery acquisition was performed on April 17th and April 22nd of 2005 at 4800' AMT. Ground control survey was conducted by Kadrmas, Lee and Jackson of Bismarck, North Dakota. A survey report summarizing methodology and results was submitted in hardcopy and a digital file in PDF format. GPS data was collected on two new monuments and 11 existing MPO monuments. The resulting coordinates for each new station are referenced to NAD 83(96) datum in North Dakota State Coordinate System, South Zone (3302). The horizontal units were international feet. The GPS Orthometric Heights were determined by calculating the Ellipsoid-Geoid separation using Geoid 99 model and are based on NGVD 1929 international feet. The existing DTM data which Horizons had collected in 2001 was updated to support 2' contours where requested. New mapping was performed on 40 sections and an additional 30 sections of DTM collection was done for ortho rectification only. Contour were generated from the updated and new DTM data and delivered in ARC Shape file format in one contiguous file. The DTM data including breaklines, random points and spot elevation points were also delivered in ARC Shape file format. 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