Cass County Aerial Photography 2011

Tags
North Dakota, ND, GIS Hub, NDGIS, NDGISHub, aerial photography, Cass County, Fargo, environment, imagery, geoscientificInformation, imageryBaseMapsEarthCover


Description

The project encompassed an area of approximately 1304 square miles. A Leica ADS40/SH52 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 May 15-17, 2011 at 4800' AMT (above mean terrain), with 30 percent sidelap between the flight lines. Digital orthophotos in TIFF format were produced with a resolution of 0.5 foot utilizing the ADS40/SH52 imagery and Red River Basin LiDAR Elevation DEM.

Summary

Half-foot pixel resolution aerial photography of Cass County for agricultural land assessment and various other uses.

Credits

Cass County, North Dakota

Use limitations

Not for navigation, The State of North Dakota has compiled this data according to conventional cartographic standards, using what is thought to be the most reliable information available. This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The State of North Dakota makes every effort to provide virus-free files but does not guarantee uncorrupted files. The State of North Dakota does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.

Scale Range

Metadata 

Topics and Keywords 

Themes or categories of the resource  environment, geoscientificInformation, imageryBaseMapsEarthCover


Theme keywords  Cass County, Fargo, North Dakota, aerialphotography, imagery

Citation 

Title Cass County Aerial Photography 2011
Creation date 2011-04-18 00:00:00
Publication date 2012-04-12 00:00:00


Presentation formats* digital map


Citation Contacts 

Responsible party
Individual's name Kay Anderson
Organization's name Cass County
Contact's position GIS Coordinator
Contact's role  originator


Contact information
Phone
Voice (701)-241-5762

Address
Type
City Fargo
Administrative area North Dakota
Country USA
e-mail addressAndersonK@casscountynd.gov



Resource Details 

Dataset languages* English (UNITED STATES)
Dataset character set  utf8 - 8 bit UCS Transfer Format


Spatial representation type* grid


Spatial resolution
Supplemental information
Tiling is based on sections, and naming is based on township, range and section. 

*Processing environment Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600


Credits
Cass County, North Dakota

*Name AerialImage_Cass_2011_04112012

Service Details 

Service Information
*Service Imagery/AerialImage_Cass_2011
*Service type image

Extents 

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -97.743144
*East longitude -96.725605
*North latitude 47.265702
*South latitude 46.600074
*Extent contains the resource Yes

Temporal extent
Beginning date 2011-05-15 00:00:00
Ending date 2011-05-17 00:00:00

Extent in the item's coordinate system
*West longitude 2660990.747523
*East longitude 2905731.453579
*South latitude 362654.889916
*North latitude 595457.540780
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Individual's name Kay Anderson
Organization's name Cass County
Contact's position GIS Coordinator
Contact's role  originator


Contact information
Phone
Voice (701)-241-5762

Address
Type
City Fargo
Administrative area North Dakota
Country USA
e-mail addressandersonk@casscountynd.gov



Point of contact
Organization's name Fugro Horizons, Inc.
Individual's name Michael Larson
Contact's position Project Manager
Contact's role  originator


Contact information
Phone
Voice 605-343-0280

Address
Type
Delivery point 3600 Jet Drive
City Rapid City
Administrative area South Dakota
Postal code 57703
Country USA
e-mail addressmike.larson@fugrohorizons.com



Resource Constraints 

Constraints
Limitations of use

Not for navigation, The State of North Dakota has compiled this data according to conventional cartographic standards, using what is thought to be the most reliable information available. This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The State of North Dakota makes every effort to provide virus-free files but does not guarantee uncorrupted files. The State of North Dakota does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.


Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_StatePlane_North_Dakota_South_FIPS_3302_Feet
*Coordinate reference details
Projected coordinate system
Well-known identifier 102721
X origin -117105100
Y origin -98987300
XY scale 37821982.600429438
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.0032808333333333335
Z tolerance 0.001
M tolerance 0.001
High precision true
Well-known text PROJCS["NAD_1983_StatePlane_North_Dakota_South_FIPS_3302_Feet", GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980", 6378137.0, 298.257222101]], PRIMEM["Greenwich", 0.0], UNIT["Degree", 0.0174532925199433]], PROJECTION["Lambert_Conformal_Conic"], PARAMETER["False_Easting", 1968500.0], PARAMETER["False_Northing", 0.0], PARAMETER["Central_Meridian", -100.5], PARAMETER["Standard_Parallel_1", 46.18333333333333], PARAMETER["Standard_Parallel_2", 47.48333333333333], PARAMETER["Latitude_Of_Origin", 45.66666666666666], UNIT["Foot_US", 0.3048006096012192], AUTHORITY["ESRI", 102721]]

Reference system identifier
*Value 102721
*Codespace ESRI
*Version 10.0.0


Spatial Data Properties 

Georectified Grid
*Number of dimensions 2


Axis dimensions properties
Dimension type  column (x-axis)
*Dimension size 489482
*Resolution  0.499999 Foot_US

Axis dimensions properties
Dimension type  row (y-axis)
*Dimension size 465606
*Resolution  0.499999 Foot_US

*Cell geometry  area
*Point in pixel  center


*Transformation parameters are available Yes
Transformation dimension description North Dakota State Plane South (US Foot)


*Check points are available No


Corner points
*Point 2660990.747523 362654.889916
*Point 2660990.747523 595457.540780
*Point 2905731.453579 595457.540780
*Point 2905731.453579 362654.889916

*Center point 2783361.100551 479056.215348




ArcGIS Raster Properties
General Information
*Pixel depth 8
*Compression type None
*Number of bands 3
*Raster format AMD
*Source type continuous
*Pixel type unsigned integer
*No data value 256
*Has colormap No
*Has pyramids Yes


Detailed properties
*Maximum image height 4100
*Maximum image width 15000
*Maximum record count 1000
*Maximum download image count 20
*Maximum mosaic image count 20
*Default compression quality 75
*Viewpoint spacing X 600
*Viewpoint spacing Y 300
*Allowed item metadata Full
*Default resampling method 1
*Allowed mosaic methods Center,NorthWest,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None
*Allowed compressions None,JPEG,LZ77
*Available mosaic methods Center,NorthWest,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None
*Available compression methods None,JPEG,LZ77
*Available metadata levels None,Basic,Full
*Allowed fields Name,MinPS,MaxPS,LowPS,HighPS,Tag,GroupName,ProductName,CenterX,CenterY,ZOrder,SOrder,StereoID,Shape_Length,Shape_Area
*ApplyColorCorrection 0
*MosaicOperator 1
*UseTime 0
*SortAscending -1
*ClipToFootprint 0
*IsPreprocessedData -1
*SortField Name
*SortValue 0


*Raster functions
Function Mosaic Function
Description Perform on-the-fly mosaic on a raster catalog.




Spatial Data Content 

Image Description
*Type of information  image


Band information
*Description Band_1
*Maximum value 255.000000
*Minimum value 0.000000
Units
*Symbol Foot_US

*Number of bits per value 8


Band information
*Description Band_2
*Maximum value 255.000000
*Minimum value 0.000000
Units
*Symbol Foot_US

*Number of bits per value 8


Band information
*Description Band_3
*Maximum value 255.000000
*Minimum value 0.000000
Units
*Symbol Foot_US

*Number of bits per value 8


Data Quality 

Data quality report
Measure description
GPS phase data was post processed with continuous kinematic survey techniques using "On the Fly" (OTF) integer ambiguity resolution. The GPS data was processed with forward and reverse processing algorithms. The results from each process, using the data collected at the airport, were combined to yield a single fixed integer phase differential solution of the aircraft trajectory. The differences between the forward to reverse solution within the project area were within project specifications (<10cm) in both the horizontal and vertical components, indicating a valid and accurate solution. An IMU was used to record precise changes in position and orientation of the ADS40 Digital Camera System. All IMU data was processed post flight with a filter to integrate inertial measurements and precise phase differential GPS positions. The resulting solution contains geodetic position, omega, phi, kappa, and time for digital image processing. 



Conformance test results
Result explanation
The orthophotography meets 3ft Horizontal Accuracy at NSSDA 95% confidence 





Lineage 

Lineage statement
The Leica GeoSystems XPro software was used for downloading and preparing imagery collected with the ADS40 Airborne Digital Sensor for softcopy photogrammetric use. The raw image was download in the field with XPro to a portable workstation. This enabled a quick look at image quality and coverage. Using the Applanix POSgps software package the GPS data was differentially processed against a base station. After the differential GPS solution was checked and verified the Applanix POSproc program was used to compute an integrated GPS/IMU navigation solution at one-second intervals. Using the GPS/IMU trajectory computed by the Applanix POSproc software and the camera calibration, GPro computed a full x,y,z, omega,phi,kappa exterior orientation of each scan line. Using the orientation data file produced the L0 imagery was resampled. The resampling removes most aircraft motion and provides epipolar geometry imagery for stereo viewing, automated aerotriangulation and automated DEM extraction. The Level 1 epipolar-resampled and georeferenced imagery usually will provide a pixel’s true ground location to within a few pixels without any additional processing. To improve accuracy, a fully automatic aerotriangulation process was performed to minimize the residual errors in the GPS/IMU derived exterior orientations. The aerotriangulation also allowed the introduction of ground control and checkpoints to ensure the accuracy specifications were achieved. Automated aerotriangulation of ADS40 imagery was performed with the Socet Set Automatic Point Measurement (APM) tool. A digital elevation model (DEM) was required for orthophoto production. Red River Basin LiDAR Data was used as the DEM for orthophoto creation. Orthophotos were created utilizing Leica Geosystem XPRO software. Orthos were created in XPRO in UTM Zone 14 meters. The orthos were mosaiced together using LizardTech Orthovista. The orthos were then placed in a Fugro Horizons proprietary database format. The database was edited for seamlines, and other artifacts. Since the imagery was calibrated by the system calibration no color correcting was done to the imagery. The imagery was clipped out of the database into the sheet layout generated based on client use requirements. In the clipping stage, the coordinate system and georeferencing was embedded into the header of the TIFF file. The imagery tiles were QC'ed and delivered on an External Hard Drive. 

Fields 

Details for object AMD_AerialImage_Cass_2011_04112012_CAT 
*Type Feature Class
*Row count 3096


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 0
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field Shape
 
*Alias Shape
*Data type Geometry
*Width 0
*Precision 0
*Scale 0
*Field description
Feature geometry.

*Description source
ESRI

*Description of values
Coordinates defining the features.





Field Raster
 
*Alias Raster
*Data type Raster
*Width 0
*Precision 0
*Scale 0




Field Name
 
*Alias Name
*Data type String
*Width 50
*Precision 0
*Scale 0




Field MinPS
 
*Alias MinPS
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field MaxPS
 
*Alias MaxPS
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field LowPS
 
*Alias LowPS
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field HighPS
 
*Alias HighPS
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field Category
 
*Alias Category
*Data type Integer
*Width 4
*Precision 0
*Scale 0




Field Tag
 
*Alias Tag
*Data type String
*Width 20
*Precision 0
*Scale 0




Field GroupName
 
*Alias GroupName
*Data type String
*Width 50
*Precision 0
*Scale 0




Field ProductName
 
*Alias ProductName
*Data type String
*Width 50
*Precision 0
*Scale 0




Field CenterX
 
*Alias CenterX
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field CenterY
 
*Alias CenterY
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field ZOrder
 
*Alias ZOrder
*Data type Integer
*Width 4
*Precision 0
*Scale 0




Field SOrder
 
*Alias SOrder
*Data type Integer
*Width 4
*Precision 0
*Scale 0




Field TypeID
 
*Alias Raster Type ID
*Data type Integer
*Width 4
*Precision 0
*Scale 0




Field StereoID
 
*Alias StereoID
*Data type String
*Width 50
*Precision 0
*Scale 0




Field ItemTS
 
*Alias ItemTS
*Data type Double
*Width 8
*Precision 0
*Scale 0




Field UriHash
 
*Alias UriHash
*Data type String
*Width 50
*Precision 0
*Scale 0




Field Uri
 
*Alias Uri
*Data type Blob
*Width 0
*Precision 0
*Scale 0




Field Shape_Length
 
*Alias Shape_Length
*Data type Double
*Width 8
*Precision 0
*Scale 0
*Field description
Length of feature in internal units.

*Description source
ESRI

*Description of values
Positive real numbers that are automatically generated.





Field Shape_Area
 
*Alias Shape_Area
*Data type Double
*Width 8
*Precision 0
*Scale 0
*Field description
Area of feature in internal units squared.

*Description source
ESRI

*Description of values
Positive real numbers that are automatically generated.







Metadata Details 

*Metadata language English (UNITED STATES)
Metadata character set  utf8 - 8 bit UCS Transfer Format


*Last update 2014-06-02


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2012-04-11 15:42:31
Last modified in ArcGIS for the item 2014-06-02 14:58:27


Automatic updates
Have been performed Yes
Last update 2014-06-02 14:58:27


Metadata Contacts 

Metadata contact
Individual's name Bob Nutsch
Organization's name State of North Dakota
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice 701-328-3212

Address
Type
City Bismarck
Administrative area North Dakota
Postal code 58505
Country USA
e-mail addressbnutsch@nd.gov



Metadata Maintenance 

Maintenance
Update frequency  irregular