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Metadata: | ||
Identification_Information: | ||
Citation: | ||
Citation_Information: | ||
Originator: USDA-FSA-APFO Aerial Photography Field Office | ||
Publication_Date: 20171120 | ||
Title: NAIP Digital Ortho Photo Image | ||
Geospatial_Data_Presentation_Form: remote-sensing image | ||
Publication_Information: | ||
Publication_Place: Salt Lake City, Utah | ||
Publisher: USDA-FSA-APFO Aerial Photography Field Office | ||
Description: | ||
Abstract: | ||
This data set contains imagery from the National Agriculture | ||
Imagery Program (NAIP). The NAIP program is administered by | ||
USDA FSA and has been established to support two main FSA | ||
strategic goals centered on agricultural production. | ||
These are, increase stewardship of America's natural resources | ||
while enhancing the environment, and to ensure commodities | ||
are procured and distributed effectively and efficiently to | ||
increase food security. The NAIP program supports these goals by | ||
acquiring and providing ortho imagery that has been collected | ||
during the agricultural growing season in the U.S. The NAIP | ||
ortho imagery is tailored to meet FSA requirements and is a | ||
fundamental tool used to support FSA farm and conservation | ||
programs. Ortho imagery provides an effective, intuitive | ||
means of communication about farm program administration | ||
between FSA and stakeholders. | ||
New technology and innovation is identified by fostering and | ||
maintaining a relationship with vendors and government | ||
partners, and by keeping pace with the broader geospatial | ||
community. As a result of these efforts the NAIP program | ||
provides three main products: DOQQ tiles, | ||
Compressed County Mosaics (CCM), and Seamline shape files | ||
The Contract specifications for NAIP imagery have changed | ||
over time reflecting agency requirements and improving | ||
technologies. These changes include image resolution, | ||
horizontal accuracy, coverage area, and number of bands. | ||
In general, flying seasons are established by FSA and are | ||
targeted for peak crop growing conditions. The NAIP | ||
acquisition cycle is based on a minimum 3 year refresh of base | ||
ortho imagery. The tiling format of the NAIP imagery is based | ||
on a 3.75' x 3.75' quarter quadrangle with a 300 pixel buffer | ||
on all four sides. NAIP quarter quads are formatted to the UTM | ||
coordinate system using the North American Datum of 1983. | ||
NAIP imagery may contain as much as 10% cloud cover per tile. | ||
Purpose: | ||
NAIP imagery is available for distribution within 60 days | ||
of the end of a flying season and is intended to provide current | ||
information of agricultural conditions in support of USDA farm | ||
programs. For USDA Farm Service Agency, the 1 meter and 1/2 meter | ||
GSD product provides an ortho image base for Common Land Unit | ||
boundaries and other data sets. The 1 meter and 1/2 meter NAIP | ||
imagery is generally acquired in projects covering full states in | ||
cooperation with state government and other federal agencies that | ||
use the imagery for a variety of purposes including land use | ||
planning and natural resource assessment. The NAIP is also used | ||
for disaster response. While suitable for a variety of uses, | ||
prior to 2007 the 2 meter GSD NAIP imagery was primarily intended | ||
to assess "crop condition and compliance" to USDA farm program | ||
conditions. The 2 meter imagery was generally acquired only | ||
for agricultural areas within state projects. | ||
Time_Period_of_Content: | ||
Time_Period_Information: | ||
Single_Date/Time: | ||
Calendar_Date: 20170707 | ||
Currentness_Reference: Ground Condition | ||
Status: | ||
Progress: Complete | ||
Maintenance_and_Update_Frequency: Irregular | ||
Spatial_Domain: | ||
Bounding_Coordinates: | ||
West_Bounding_Coordinate: -94.8125 | ||
East_Bounding_Coordinate: -94.7500 | ||
North_Bounding_Coordinate: 42.6250 | ||
South_Bounding_Coordinate: 42.5625 | ||
Keywords: | ||
Theme: | ||
Theme_Keyword_Thesaurus: None | ||
Theme_Keyword: farming | ||
Theme_Keyword: Digital Ortho rectified Image | ||
Theme_Keyword: Ortho Rectification | ||
Theme_Keyword: Quarter Quadrangle | ||
Theme_Keyword: NAIP | ||
Theme_Keyword: Aerial Compliance | ||
Theme_Keyword: Compliance | ||
Place: | ||
Place_Keyword_Thesaurus: Geographic Names Information System | ||
Place_Keyword: IA | ||
Place_Keyword: Pocahontas | ||
Place_Keyword: 19151 | ||
Place_Keyword: IA151 | ||
Place_Keyword: POCAHONTAS CO IA FSA | ||
Place_Keyword: 4209426 | ||
Place_Keyword: FONDA, NE | ||
Place_Keyword: FONDA | ||
Access_Constraints: There are no limitations for access. | ||
Use_Constraints: | ||
None. The USDA-FSA Aerial Photography Field office | ||
asks to be credited in derived products. | ||
Point_of_Contact: | ||
Contact_Information: | ||
Contact_Organization_Primary: | ||
Contact_Organization: Aerial Photography Field Office (APFO) | ||
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: 801-844-2922 | ||
Contact_Facsimile_Telephone: 801-956-3653 | ||
Contact_Electronic_Mail_Address: [email protected] | ||
Browse_Graphic: | ||
Browse_Graphic_File_Name: None | ||
Browse_Graphic_File_Description: None | ||
Browse_Graphic_File_Type: None | ||
Native_Data_Set_Environment: Unknown | ||
Data_Quality_Information: | ||
Logical_Consistency_Report: | ||
NAIP 3.75 minute tile file names are based | ||
on the USGS quadrangle naming convention. | ||
Completeness_Report: None | ||
Positional_Accuracy: | ||
Horizontal_Positional_Accuracy: | ||
Horizontal_Positional_Accuracy_Report: | ||
NAIP horizontal accuracy specifications have evolved over | ||
the life of the program. From 2003 to 2004 the | ||
specifications were as follows: 1-meter GSD imagery was | ||
to match within 3-meters, and 2-meter GSD to match within 10 | ||
meters of reference imagery. For 2005 the 1-meter GSD | ||
specification was changed to 5 meters matching the reference | ||
imagery. In 2006 a pilot project was performed using true | ||
ground specifications rather than reference imagery. All | ||
states used the same specifications as 2005 except Utah, | ||
which required a match of +/- 6 meters to true ground. | ||
In 2007 all specifications were the same as 2006 except | ||
Arizona used true ground specifications and all other states | ||
used reference imagery. In 2008 and subsequent years | ||
no 2-meter GSD imagery was acquired and all specifications | ||
were the same as 2007 except approximately half of the | ||
states acquired used true ground specifications and the | ||
other half used reference imagery. The 2008 states that | ||
used absolute ground control where; Indiana, Minnesota, | ||
New Hampshire, North Carolina, Texas, Vermont, and Virginia. | ||
From 2009 to present all NAIP imagery acquisitions used | ||
the +/- 6 meters to ground specification. | ||
Lineage: | ||
Source_Information: | ||
Source_Citation: | ||
Citation_Information: | ||
Originator: USDA-FSA-APFO Aerial Photography Field Office | ||
Publication_Date: 20171120 | ||
Title: FONDA, NE | ||
Geospatial_Data_Presentation_Form: remote-sensing image | ||
Type_of_Source_Media: UnKnown | ||
Source_Time_Period_of_Content: | ||
Time_Period_Information: | ||
Single_Date/Time: | ||
Calendar_Date: 20170707 | ||
Source_Currentness_Reference: | ||
Aerial Photography Date for aerial photo source. | ||
Source_Citation_Abbreviation: Georectifed Image | ||
Source_Contribution: Digital Georectifed Image. | ||
|
||
Process_Step: | ||
Process_Description: | ||
Flight planning was performed in Leica MissionPro over a | ||
buffered boundary covering DOQQ extents provided by the | ||
USDA. A 500m reduced resolution DEM file was used to | ||
determine ground heights. A targeted flight altitude of | ||
approximately 16,000 feet above ground level for | ||
acquisition with sidelap of 27% was used for flight | ||
planning parameters. Five Cessna Conquests and a Cessna | ||
414 were utilized for acquisition, the seamline | ||
shapefile clarifies which aircraft were used for a given | ||
area. All aircraft were equipped with Leica ADS100 | ||
systems for data capture. The Leica ADS100 pushbroom | ||
sensor has been calibrated by the manufacturer as well | ||
as validated against a local calibration range. | ||
The calibration includes measuring the radiometric and | ||
geometric properties of the camera. These data are | ||
used in the Post Processing Software | ||
to eliminate the radiometric and geometric distortion. | ||
All aerial imagery was collected with associated GPS/IMU | ||
data. ADS collection requires high quality IMU data for | ||
processing and was critical for early access hosting of | ||
digital data to the web for USDA interim access and | ||
review. After post processing was complete, all | ||
imagery was triangulated using Leica XPro in which | ||
the airborne GPS data was constrained to expected limits. | ||
To validate the accuracy of the block adjustment derived | ||
from GPS/IMU, sensor parameters and conjugate point | ||
measurements, photo identifiable ground control points | ||
were field surveyed within each State. These points were | ||
surveyed using GPS techniques to produce coordinates | ||
that are accurate to +/- 0.25 meters RMSE in XYZ. | ||
The GPS surveying techniques utilized assured that the | ||
coordinates are derived in the required project datum | ||
and relative to an approved | ||
National Reference System. If the block does not fit the | ||
control points within specifications the pass and tie | ||
points were reviewed for blunders and weak areas. If, | ||
after these corrections were made, the block still | ||
does not fit the control well the GPS and IMU processing | ||
were reviewed. Once the block has proper statistics and | ||
fits the control to specifications, the final bundle | ||
adjustment was made. As AT points are frequently on | ||
man-made and other vertical features not included in | ||
the DEM, these ortho points can only be used to | ||
indicate regions of error by the clusters of points | ||
that predict excessive horizontal displacement. | ||
The final adjustments assure a high quality relative | ||
adjustment and a high quality absolute adjustment | ||
limited to the airborne GPS data accuracy. This process | ||
assures the final absolute accuracy of all geopositioned | ||
imagery. Both signalized and photo identified | ||
ground control were used to QC and control the IMU/GPS | ||
based aerial triangulation bundle block solution. Surdex | ||
Grouping Tool provides real-time updates | ||
of the USDA APFO Image Metrics. The image technician | ||
adjusts image correction parameters to bring the | ||
radiometric characteristics of large groups of images | ||
within the Image Metrics ranges. For each | ||
project area the highest resolution DEM or LiDAR was | ||
obtained and utilized for rectification of captured | ||
imagery. A visual inspection of the final DEM using | ||
color cycled classification by elevation and a shaded | ||
relief was performed to check for gaps, corruption | ||
and gross errors. The predicted horizontal error for | ||
each point was added as an attribute in the SURDEX | ||
enterprise database. An operator reviews ortho seams | ||
in areas these predicted errors indicate horizontal | ||
error in excess of the contract specifications. | ||
Any imagery errors introduced by source DEM required | ||
patching from an alternate perspective or strip of | ||
photography. Processing hardware used included various | ||
brands of survey grade GPS receivers, various brands | ||
and models of computers, calibrated monitors and | ||
various brands of monitor calibration colorimeters. | ||
Leica XPro was used for post | ||
processing of ADS pushbroom data, triangulation and | ||
orthorectification. SURDEX software was used to color | ||
correct and remove bidirectional reflectance, | ||
vignetting and other illumination trends. | ||
USDA APFO Image Metrics are measured and | ||
images corrected to conform to the Image Metrics using | ||
SURDEX software. GPS/IMU data was reduced to projected | ||
coordinates in the appropriate UTM zone using | ||
Inertial Explorer software from Novatel. Aerial | ||
Triangulation and orthorectification was performed | ||
using Leica XPro. SURDEX software was used to | ||
adjust for minor radiometric variation between adjacent | ||
images. SURDEX software was used to calculate the | ||
optimal seam path, check seam topology and | ||
create master tiles. SURDEX ortho software generates | ||
occlusion/smear polygons used during seam review | ||
of steep terrain. SURDEX software was used to | ||
visually inspect master tiles for seam and image | ||
defects. SURDEX software was used to project and | ||
cut final DOQQ image files from masters. | ||
SURDEX software was used to create CCM | ||
metadata. Lizardtech GeoExpress version 9.1.0.3981 | ||
was used to create the CCM image file. SURDEX software | ||
was used to perform final formatting, QC and naming | ||
of the DOQQ. USGS metadata parser software was used | ||
to validate the metadata. | ||
Various versions of Microsoft Windows were used in all | ||
phases of production. Grouping Tool was used again | ||
after DOQQ and CCM production to provide a | ||
quality assurance check. Individual DOQQ and CCM may | ||
not meet the USDA APFO Image Metrics ranges | ||
due to land cover. The goal is to have the state as a | ||
whole meet the Image Metrics. All products are reviewed | ||
by independent personnel prior to delivery. | ||
The delivery is checked for omissions, commissions, | ||
naming, formatting, specification compliance and data integrity | ||
Process_Date: 20171120 | ||
Spatial_Data_Organization_Information: | ||
Indirect_Spatial_Reference: Pocahontas County, IA | ||
Direct_Spatial_Reference_Method: Raster | ||
Raster_Object_Information: | ||
Raster_Object_Type: Pixel | ||
Row_Count: 1 | ||
Column_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: 15 | ||
Transverse_Mercator: | ||
Scale_Factor_at_Central_Meridian: 0.9996 | ||
Longitude_of_Central_Meridian: -93.0 | ||
Latitude_of_Projection_Origin: 0.0 | ||
False_Easting: 500000 | ||
False_Northing: 0.0 | ||
Planar_Coordinate_Information: | ||
Planar_Coordinate_Encoding_Method: row and column | ||
Coordinate_Representation: | ||
Abscissa_Resolution: 1 | ||
Ordinate_Resolution: 1 | ||
Planar_Distance_Units: meters | ||
Geodetic_Model: | ||
Horizontal_Datum_Name: North American Datum of 1983 | ||
Ellipsoid_Name: Geodetic Reference System 80 (GRS 80) | ||
Semi-major_Axis: 6378137 | ||
Denominator_of_Flattening_Ratio: 298.257 | ||
Entity_and_Attribute_Information: | ||
Overview_Description: | ||
Entity_and_Attribute_Overview: | ||
32-bit pixels, 4 band color(RGBIR) values 0 - 255 | ||
Entity_and_Attribute_Detail_Citation: None | ||
Distribution_Information: | ||
Distributor: | ||
Contact_Information: | ||
Contact_Person_Primary: | ||
Contact_Person: Supervisor Customer Services Section | ||
Contact_Organization: | ||
USDA-FSA-APFO 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: 801-844-2922 | ||
Contact_Facsimile_Telephone: 801-956-3653 | ||
Contact_Electronic_Mail_Address: [email protected] | ||
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: GeoTIFF - Georeferenced Tagged Image File Format | ||
Format_Information_Content: Multispectral 4-band | ||
Digital_Transfer_Option: | ||
Offline_Option: | ||
Offline_Media: CD-ROM | ||
Recording_Format: ISO 9660 Mode 1 Level 2 Extensions | ||
Offline_Option: | ||
Offline_Media: DVD-R | ||
Recording_Format: ISO 9660 | ||
Offline_Option: | ||
Offline_Media: USB Hard Disk | ||
Recording_Format: NTFS | ||
Offline_Option: | ||
Offline_Media: FireWire Hard Disk | ||
Recording_Format: NTFS | ||
Fees: | ||
Contact the Aerial Photography Field Office | ||
for more information | ||
Resource_Description: | ||
m_4209426_ne_15_1_20170707_20171026.tif | ||
Metadata_Reference_Information: | ||
Metadata_Date: 20171120 | ||
Metadata_Contact: | ||
Contact_Information: | ||
Contact_Organization_Primary: | ||
Contact_Organization: | ||
USDA-FSA-APFO 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: 801-844-2922 | ||
Metadata_Standard_Name: | ||
Content Standard for Digital Geospatial Metadata | ||
Metadata_Standard_Version: FGDC-STD-001-1998 | ||
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