Sagebrush CIR Aerial Imagery

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Horizons, Inc.
Publication_Date: 20080301
Title: Sagebrush CIR Aerial Imagery
Edition: One
Publication_Information:
Publication_Place: Salt Lake City, Utah
Publisher: Bureau of Reclamation
Description:
Abstract:
1000' scale orthophotography. The project encompassed an area of approximately 1802 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 October 2nd, 9th and 10th of 2007 at 9600' AMT. No Ground control survey was conducted. 8-bit CIR digital orthophotos in IMG format were produced with a resolution of 0.3m utilizing the ADS40/SH52 imagery and Autocorrelated 10m DEM. Delivery was on External Hard Drive.
Purpose:
The orthophotos will be used for scientific research, planning, and production of GIS products.
Supplemental_Information:
There are six images that cover the entire project area. The imagery files have the following naming convention. Sht_001.img thru Sht_006.img
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071002
Ending_Date: 20071010
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -104.560989
East_Bounding_Coordinate: -103.575542
North_Bounding_Coordinate: 46.719075
South_Bounding_Coordinate: 45.796218
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Aerial Photography
Theme_Keyword: Orthophoto
Theme_Keyword: Digital Imagery
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Montana
Place_Keyword: North Dakota
Place_Keyword: South Dakota
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Reclamation
Contact_Person: Alan Bell
Contact_Address:
Address_Type: mailing and physical address
Address:
Denver Federal Center, Bldg 56 Room 2665
City: Denver
State_or_Province: Colorado
Postal_Code: 80225-0007
Country: United States
Contact_Voice_Telephone: 303-445-2268
Contact_Electronic_Mail_Address: abell@do.usbr.gov
Hours_of_Service: 8am-5pm, Mountain Time
Native_Data_Set_Environment: Windows NT Version 4.0
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
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.
Logical_Consistency_Report: None
Completeness_Report: None
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The orthophotography meets National Map Accuracy Standards of 1947 for scale of 1 to 12000. The average RMS of the three AT Blocks in the X direction is 0.183m. The average RMS of the three AT Blocks in the Y direction is 0.200m.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The orthophotography meets National Map Accuracy Standards of 1947 for scale of 1 to 12000. The average RMS of the three AT Blocks in the Z direction is 0.063m.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Horizons, Inc.
Publication_Date: 20080301
Title: Sagebrush CIR Aerial Imagery
Source_Scale_Denominator: 19200
Type_of_Source_Media: Digital Data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071002
Ending_Date: 20080301
Source_Currentness_Reference: Date of Photography
Source_Citation_Abbreviation: None
Source_Contribution: None
Process_Step:
Process_Description:
The Leica GeoSystems GPro 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 GPro 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. Autocorrelated Elevation Data was used as the DEM for orthophoto creation. Orthophotos were created utilizing Leica Geosystem GPRO software. Orthos were created in GPRO in UTM Zone 13 meters. The orthos were then placed in a 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 tiles were QC'ed and delivered on an External Hard Drive.
Process_Date: 20080301
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Fugro Horizons Inc.
Contact_Person: Michael Larson
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 3600 Jet Drive
City: Rapid City
State_or_Province: South Dakota
Postal_Code: 57703
Country: United States
Contact_Voice_Telephone: 605-343-0280
Contact_Facsimile_Telephone: 605-343-0305
Contact_Electronic_Mail_Address: mike.larson@fugrohorizons.com
Hours_of_Service: 8am-5pm Mountain Time
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 129000
Column_Count: 129000
Vertical_Count: 3
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -105.000000
Latitude_of_Projection_Origin: +00.000000
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.3
Ordinate_Resolution: 0.3
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378434.181
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 2
Altitude_Distance_Units: Meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: 0.3 meter pixel resolution Orthophotography
Entity_and_Attribute_Detail_Citation: Not Applicable
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Reclamation
Contact_Person: Alan Bell
Contact_Address:
Address_Type: mailing and physical address
Address:
Denver Federal Center, Bldg 56 Room 2665
City: Denver
State_or_Province: Colorado
Postal_Code: 80225-0007
Country: United States
Contact_Voice_Telephone: 303-445-2268
Contact_Electronic_Mail_Address: abell@do.usbr.gov
Hours_of_Service: 8am-5pm, Mountain Time
Resource_Description: Sagebrush CIR Aerial Imagery
Distribution_Liability: Unknown
Metadata_Reference_Information:
Metadata_Date: 20080301
Metadata_Review_Date: 20080301
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Fugro Horizons, Inc.
Contact_Person: Michael Larson
Contact_Position: Project Manager
Contact_Address:
Address_Type: Mailing and physical address
Address: 3600 Jet Drive
City: Rapid City
State_or_Province: South Dakota
Postal_Code: 57703
Country: United States
Contact_Voice_Telephone: 605-343-0280
Contact_Facsimile_Telephone: 605-343-0305
Contact_Electronic_Mail_Address: mike.larson@fugrohorizons.com
Hours_of_Service: 8am-5pm Mountain Time
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.8.11 on Tue Mar 04 09:18:24 2008