NAIP County Mosaics - Maryland 2009


Identification_Information:
Citation:
Citation_Information:
Originator:USDA-FSA Aerial Photography Field Office
Publication_Date:20091116
Title:
NAIP County Mosaics - Maryland 2009
Publication_Information:
Publication_Place:Salt Lake City, Utah
Publisher:USDA FSA Aerial Photography Field Office
Online_Linkage: http://www.pasda.psu.edu/
Description:
Abstract:
This data set contains imagery from the National
Agriculture Imagery Program (NAIP).  The NAIP
acquires digital ortho imagery during the
agricultural growing seasons in the continental U.S..
A primary goal of the NAIP program is to enable
availability of ortho imagery within one year of
acquisition.  The NAIP provides two main products: 1
meter ground sample distance (GSD) ortho imagery
rectified to a horizontal accuracy within +/- 5 meters
of reference digital ortho quarter quads (DOQQ's) from
the National Digital Ortho Program (NDOP) or from the
National Agriculture Imagery Program (NAIP); 1 meter
GSD ortho imagery rectified within +/- 6 meters to
true ground.  The tiling format of NAIP imagery is
based on a 3.75' x 3.75' quarter quadrangle with a 300
meter buffer on all four sides.  The NAIP imagery is
formatted to the UTM coordinate system using the North
American Datum of 1983 (NAD83).  The NAIP imagery may
contain as much as 10% cloud cover per tile.  This file
was generated by compressing NAIP imagery that cover
the county extent.  Two types of compression may be
used for NAIP imagery: MrSID and JPEG 2000. Target
value for the compression ratio is (15:1).
Purpose:
The 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 GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies who use the imagery for a variety of purposes including land use planning and natural resource assessment. The NAIP is also used for disaster response often providing the most current pre-event imagery.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Currentness_Reference:
Photography Source Image Dates.
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-79.130307
East_Bounding_Coordinate:-78.301527
North_Bounding_Coordinate:39.768695
South_Bounding_Coordinate:39.418839
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:farming
Theme_Keyword:Digital Ortho rectified Image
Theme_Keyword:Mosaic
Theme_Keyword:Quarter Quadrangle Centered
Theme_Keyword:Ortho Rectification
Theme_Keyword:Compression
Theme_Keyword:MrSID
Theme_Keyword:JPEG 2000
Theme_Keyword:NAIP
Theme_Keyword:Compliance
Theme_Keyword:Aerial Compliance
Theme_Keyword:Imagery/Base Maps/Earth Cover
Place:
Place_Keyword_Thesaurus:Geographic Names Information System
Place_Keyword:MD
Place_Keyword:ALLEGANY
Place_Keyword:ALLEGANY MD
Place_Keyword:24001
Access_Constraints:None
Use_Constraints:
None, The USDA-FSA Aerial Photography Field Office asks to
be credited in derived products.
If defects are found in the NAIP imagery during the warranty
period such as horizontal offsets, replacement imagery may be
provided. Imagery containing defects that require the
acquisition of new imagery, such as excessive cloud cover,
specular reflectance, etc., will not be replaced within a
NAIP project year.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:USDA-FSA 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
Browse_Graphic:
Browse_Graphic_File_Name: None
Browse_Graphic_File_Description:
None
Browse_Graphic_File_Type:None
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
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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:
FSA Digital Orthophoto Specifications.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
N/A  2d only
Lineage:
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Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20091020
Title:
m3907828.se
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
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Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20091005
Title:
m3907829.sw
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
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Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20091005
Title:
m3907829.se
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20090901
Title:
m3907940.nw
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
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Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20090708
Title:
m3907940.ne
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20090708
Title:
m3907833.nw
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aerial Photography Field Office
Publication_Date:20090708
Title:
m3907833.ne
Source_Scale_Denominator:40000
Type_of_Source_Media:CD/DVD
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2009
Source_Currentness_Reference:
Majority Aerial Photography Date
Source_Citation_Abbreviation:
MrSID compressed image
Source_Contribution:
3.75' quarter quadrangle used in Mosaicked County Image
Process_Step:
Process_Description:
Aerial photography was acquired using a frame based digital camera
(UltraCamD (UCD), UltraCamX (UCX), or DMC), therefore no scanning conversion
from film to digital was needed.  Geometric and radiometric
calibration for each one of the camera heads is determined in the
manufacturing laboratory. This step is also known as geometric and
radiometric calibration of a single camera head and done when the
sensor is being manufactured. The 4 multispectral heads collect
4 separated bands:  Red, Green, Blue and Near Infrared wavelength.
Both the UltraCam and DMC sensors collect 12bit data.  The UCD sensor
CCD pixel size is 9 micron with a footprint of 7500 pixels in the
long track, and 11500 pixels in the cross track.
The UCX sensor CCD pixel size is 7.2 micron with a footprint of
9420 pixels in the long track, and 14430 pixels in the cross track.
The DMC sensor CCD pixel size is 12 micron with a footprint of
7680 pixels in the long track, and 13824 pixels in the cross track.
Twin Engine Navajo, Turbo Commander and Conquest aircrafts
were used, flying at average flight height of 6,700 to 8,600 meters above
ground, allowing image acquisition of 0.67 to 0.86 meters Ground Sample
Distance.  An INS - Inertial Navigation System, with
AGPS (Airborne GPS) and IMU (Inertial Measurement Unit) was utilized for
all aerial missions. The INS allows for accurate photo-center
registration and image orientation.  For inspection and verification of
accuracy of the exterior orientation computed with the Inertial Navigation
System, stereo compilation was performed for every flight mission and its
result compared against higher accuracy source data.  If a test of
positional accuracy failed (> 5 meters) a full analytical triangulation
is processed for that mission, assuring accurate horizontal positioning.
USGS seamless NED data was used as a surface for ortho-rectification.
Sanborn used proprietary software called METRO to rectify the scanned images.
Rectification was done using cubic convolution resampling. Color balancing
was then performed on each exposure.  Sanborns software tonally balanced
each exposure to alleviate the effects of hotspots, side-to-side shading
within an exposure, and tonal differences between flightlines due to
dissimilar conditions at the time of capture.  Each exposure was then
balanced to predefined target values used throughout the project,
creating a dataset consistent and uniform in radiometry.  Seams between
exposures were determined by Sanborns software to use the best exposure
based on proximity to nadir and ground angle to the camera.  Delivery
tiles were then extracted from Sanborns seamlessimagery database, named
to meet the DOQQ and/or DOQ naming convention, and formatted as defined
in the task order. Horizontal accuracy was once again tested for 6-meter
absolute accuracy.  If failed, then the entire flight mission would be
revised, a new aerotriangulation performed and new set of doqqs produced.
Quality control was performed on a sampling of each deliverable to ensure
no artifacts or anomalies were present in the imagery.
Process_Date:20091116
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DOCUME~1\bconnell\LOCALS~1\Temp\xml54CF.tmp
Process_Date:20091116
Process_Time:08011600
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Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
ALLEGANY, MD
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Pixel
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name:Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number:17
Transverse_Mercator:
Scale_Factor_at_Central_Meridian:0.9996
Longitude_of_Central_Meridian:-81.000000
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:1.000000
Ordinate_Resolution:1.000000
Planar_Distance_Units:meters
Geodetic_Model:
Horizontal_Datum_Name:North American Datum of 1983
Ellipsoid_Name:Geodetic Reference System 80
Semi-major_Axis:6378137
Denominator_of_Flattening_Ratio:298.257
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
24-bit pixels, 3 band color (RGB)
Entity_and_Attribute_Detail_Citation:
None
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Supervisor Customer Service Section
Contact_Organization:USDA-FSA 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
Distribution_Liability:
In no event shall the creators, custodians, or distributors
of this information be liable for any damages arising outn
of its use (or the inability to use it).
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:Compressed County Mosaic
Format_Information_Content:
Color
Transfer_Size:496.9430
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: None
Offline_Option:
Offline_Media:CD-ROM
Recording_Format:ISO 9660
Offline_Option:
Offline_Media:DVD-R
Recording_Format:ISO 9660
Offline_Option:
Offline_Media:USB/Firewire/SATA External Hard Drive
Recording_Format:NTFS
Fees: Contact the USDA-FSA Aerial Photography Field Office for more information.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Penn State Data Commons
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:datacommons@psu.edu
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Date:20091116
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:USDA-FSA 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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