FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: Florida (UTM 16) 1-meter NAIP Digital Ortho Photo Image (DOI) - 2017 

Geodataset Name:       NAIP_UTM16_2017
Geodataset Type:       RASTER
Geodataset Feature:    1-METER CELL
Feature Count:         N/A
GENERAL DESCRIPTION:
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. 
DATA SOURCE(S):                    USDA-FSA-APFO Aerial Photography Field Office
SCALE OF ORIGINAL SOURCE MAPS:     UnKnown
GEODATASET EXTENT:                 State of Florida (UTM Zone 16)

PUBLICATION DATE:                  20160229
TIME PERIOD OF CONTENT:            20150719
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

FEATURE ATTRIBUTE TABLES CODES AND VALUES: 

32-bit pixels, 4 band color(RGBIR) values 0 - 255
USER NOTES: 
NAIP 3.75 minute tile file names are based
on the USGS quadrangle naming convention.

None

GeoPlan relied on the integrity of the attribute information within
the original data.













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.















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.















This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan















None.  The USDA-FSA Aerial Photography Field office
asks to be credited in derived products.














The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data. 

1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.

Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:
http://geoplan.ufl.edu/education.html








REFERENCES: 














DATA LINEAGE SUMMARY: 








DOQQ Production Process Description

USDA FSA APFO NAIP Program 2015

State: Florida

The imagery was collected using the following digital sensors:
Leica ADS-100 (Serial Number 10532)
Leica ADS-100 (Serial Number 10542)
Leica ADS-100 (Serial Number 10547)
Leica ADS-100 (Serial Number 10548)
Leica ADS-100 (Serial Number 10552)
with Flight and Sensor Control Management
System (FCMS) firmware 4.40 and
Leica ADS-80SH81 (Serial Number 1318)
with Flight and Sensor Control Management
System (FCMS) firmware 3.38.

Cameras are calibrated radiometrically and geometrically
by the manufacturer and are all certified by the USGS.
Collection was performed using a combination of the
following twin-engine aircraft:
Turbines flying at 16,500 ft above mean terrain
(tail number: AC90 N910FC)
(tail number: C441 N207SS)
(tail number: C402 N246MP)
(tail number: AC90 N690LN)
(tail number: PAY2 N400CM)

With these flying heights, there is a 23% sidelap,
giving the collected data nominal ground sampling distance
of 0.40 meters at 16,500.

Based-upon the CCD Array configuration present in
the ADS digital sensor, imagery for each flight
line is 12,000-pixels in width.  Red, Green, Blue,
Near-Infrared and Panchromatic image bands were collected.
The ADS 100 has the following band specifications:
Red 619-651
Green 525-585
Blue 435-495
Near Infrared 808-882
all values are in nanometers

The ADS 80 has the following band specifications:
Pan 465-676
Red 604-664
Green 533-587
Blue 420-492
Near Infrared 833-920
all values are in nanometers

Collected data was downloaded to portable hard drives and
shipped to the processing facility daily.  Raw flight data
was extracted from external data drives using GPro software.
Airborne GPS / IMU data was post-processed using INYS,
PosPac and/or TerraPos software and reviewed to ensure
sufficient accuracy for project requirements.
Using XPro software, planar rectified images were
generated from the collected data for use in image quality
review.  The planar rectified images were generated at five
meter resolution using a two standard deviation histogram
stretch.  Factors considered during this review included but
were not limited to the presence of smoke and/or cloud
cover, contrails, light conditions, sun glint and any sensor
or hardware-related issues that potentially could result in
faulty data.  When necessary, image strips identified as not
meeting image quality specifications were re-flown to obtain
suitable imagery.

Aero triangulation blocks were defined primarily by order of
acquisition and consisted of four to seventeen strips.
Image tie points providing the observations for the least
squares bundle adjustment were selected from the images
using an auto correlation algorithm. Photogrammetric control
points consisted of photo identifiable control points,
collected using GPS field survey techniques.  The control
points were loaded in to a softcopy workstation and measured
in the acquired image strips.  A least squares bundle
adjustment of image pass points, control points and the
ABGPS was performed to develop an aero triangulation
solution for each block using Inpho software.
Upon final bundle adjustment, the triangulated strips were
ortho-rectified to the digital elevation model (DEM) The most
recent USGS 10 meter DEMs were used in the rectification
process.

Positional accuracy was reviewed in the rectified imagery by
visually verifying the horizontal positioning of the known
photo-identifiable survey locations using ArcGIS software.
The red, green, blue, and infrared bands were combined to
generate a final ortho-rectified image strip. The ADS sensor
collects twelve bit image data which requires radiometric
adjustment for output in standard eight bit image channels.
The ortho-rectified image strips were produced with the
full 12 bit data range, allowing radiometric adjustment
to 8 bit range to be performed on a strip by strip basis
during the final mosaicking steps.

The 12 bit data range was adjusted for display in standard
eight bit image channels by defining a piecewise histogram
stretch using OrthoVista Radiometrix software.  A constant
stretch was defined for each image collection period, and
then strip by strip adjustments were made as needed to
account for changes in sun angle and azimuth during the
collection period.  Strip adjustments were also made to
match the strips histograms as closely as possible to
APFO specified histogram metrics and color balance
requirements. Automated balancing algorithms were applied
to account for bi- directional reflectance as a final step
before the conversion to 8 bit data range.  The imagery was
mosaicked using manual seam line generation in Intergraph
GeoMedia OrthoPro.
Process Date: 20160229


GeoPlan mosaiced all images in UTM16:
800 images

Source date on images ranged from:
20171024 - 20171118

Metadata imported as fgdc text.
Process Date: 20161118









MAP PROJECTION PARAMETERS: 



Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000




DATA SOURCE CONTACT (S):








Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:




USDA-FSA-APFO Aerial Photography Field Office
Georectifed Image
2222 West 2300 South
Salt Lake City, Utah
84119-2020
801-844-2922


www.apfo.usda.gov











FGDL CONTACT:

Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html