Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
20071219
Unknown
Coastal Bend Texas Benthic Habitat Mapping Reprocessed DOQQ Aerial Imagery (NODC Accession 0086051)
remote-sensing image
Charleston, SC
NOAA’s Ocean Service, Coastal Services Center (CSC)
https://www.ncei.noaa.gov/archive/accession/0086051
https://coast.noaa.gov/digitalcoast/
In 2006 and 2007 the NOAA Coastal Services Center
purchased services to reprocess existing digital
multi-spectral imagery (ADS-40) and create digital benthic
habitat data from this imagery for selected Texas coastal
bend bays. The Center worked cooperatively with the
Texas Parks and Wildlife Department (TPWD) and the
Texas A&M University Center for Coastal Studies to
develop benthic habitat data, primarily Submerged Aquatic
Vegetation (SAV) for several coastal bays. This data will
support the state's recently adopted Seagrass Monitoring
Program which calls for regional mapping of SAV for status
and trends assessment. The Center, Texas A&M, and
TPWD have coordinated on the requirements of this
project.
These data have been created as a result of the need for
having geospatial data immediately available and easily
accessible in order to enhance the capability of the NOAA
Coastal Services Center (CSC)
The bounding coordinates provided within the Spatial
Domain section represent a rectangle covering the total
area in which the project is located. The actual project
boundary located within this area is comprised of 6 areas
along the coast of the state of Texas. The geographic
Corpus Christi Bay
- ~356 sq mi , Redfish Bay - ~62 sq mi, Aransas Bay -
~285 sq mi, and Copano Bay - ~158 sq mi, Upper Laguna
Madre - ~313 sq mi, and Baffin Bay - ~232 sq mi. A total of
762 orthos (381 natural color and 381color infrared) were
produced to cover this area. Aerial imagery was collected
in panchromatic, Red, Green, Blue and Near Infrared
which yielded a natural color and false color infrared
version of the completed digital orthophotography.The
ADS40 digital camera system used for this
imagery incorporates the latest in sensor technology,
optics, electronics, data transfer, and storage. The ADS40
imagery is generated from seven parallel sensor lines in the
focal plane of a single lens system, three panchromatic
(forward, nadir, backward), red, green, and blue lines
placed next to each other, and one infrared. Each
panchromatic channel consists of two lines, each with
12,000 pixels, staggered (shifted with respect to each
other) by 0.5 pixels. The viewing angles and
characteristics of the sensor are as follows - - Focal length
62.5mm - Pixel size 6.5mm - PAN 2 arrays 12,000 pixels
each - R,G,B and NIR,R,G 12,000 pixels - Backward to
nadir stereo angle -14.1 degrees - Near infrared to nadir
stereo angle -2.05 degrees - Dynamic Range of CCD -
12-bits for all arrays. For this dataset, the natural color and
color infrared orthoimages were reprocessed at 0.50-meter
pixel resolution. Each digital orthorectified quarter quad
provides imagery for a nominal 3.75 by 3.75 minute area
corresponding to the USGS quarter quad boundaries. An
orthoimage is remotely sensed image data in which
displacement of features in the image caused by terrain
relief and sensor orientation have been mathematically
emoved. Orthoimagery combines the image characteristics
of a photograph with the geometric qualities of a map.
20070823
Publication Date
As needed
-097.743558
-096.710731
28.256790
26.939030
NCEI Geoportal FilterCoRIS_Metadata
None
Theme Theme_Keyword_Thesaurus
Texas Seagrass Monitoring Program
Digital Orthophotography
Aerial Photography
ADS40
Digital Orthophoto Quarter Quad (DOQQ)
Color Infrared DOQQ
Natural Color DOQQ
ISO 19115 Topic Category
imageryBaseMapsEarthCover
010
CoRIS Theme Thesaurus
EARTH SCIENCE > Mapping > Base map > Aerial Photography
EARTH SCIENCE > Mapping > Base map > Orthophotography
CoRIS Discovery Thesaurus
Map Images > Aerial Photographs
Geographic Names Information System
Texas
TX
US
CoRIS Place Thesaurus
OCEAN BASIN > Atlantic Ocean > Gulf of Mexico > Texas
COUNTRY/TERRITORY > United States of America > Texas
OCEAN BASIN > Atlantic Ocean > Gulf of Mexico
None
None
Fugro EarthData, Inc.
Harold Rempel
Director of Program Management
mailing and physical
7320 Executive Way
Frederick
MD
21704
USA
301-948-8550
301-963-2064
hrempel@earthdata.com
9:00am - 5:00pm
NOAA Coastal Services Center
Windows NT/2000 Systems, GPro/LPS, Leica ORIMA
Horizontal accuracy of the reprocessed source imagery
was verified to be better than 5 meters at 90% confidence
level in accordance with National Map Accuracy
Standards for a 1-meter GSD.
For the reprocessed imagery, compliance with the
accuracy standard was ensured by the placement of photo
identifiable ground control points. A total of 18 photo
identifiable ground survey points was used for the
calculations. An RMS value was calculated based on the
imagery reprocessed for this project by comparing the
aerotriangulated X and Y coordinates. This value
represents an estimate of the accuracy of the horizontal
coordinate measurements in the tile expressed in meters.
Compliance with the accuracy standard for the
reprocessed imagery was ensured by the placement of
photo identifiable ground control points and the collection
of airborne GPS data.
Accuracy assessment determined by evaluating the
horizontal accuracy obtained during the aerotriangulation
process for each lift for the reprocessed imagery.
None
Terrasurv Inc.
20051109
REPORT OF GPS SURVEY TEXAS COASTAL AREA MAPPING
model
1000
paper
20051017
20051019
Ground Condition
GPS Ground Control
TerraSurv, Inc. of Pittsburgh, PA was contracted by
EarthData International of Frederick, MD to perform a
geodetic control survey in support of mapping an area
along the southeasterly coast of Texas between Port
Lavaca and Brownsville. Thirty-eight photo identifiable
locations were surveyed to provide ground control and
quality assurance checks for the mapping. Twenty of the
stations were used for mapping control and eighteen of the
stations were used for quality checks. The horizontal
datum was the North American Datum of 1983, CORS
adjustment (NAD 1983 CORS). The vertical datum was the
North American Vertical Datum of 1988 (NAVD 1988).
The digital orthophotography was developed from imagery
acquired at a resolution of 0.9 meters as part of the 2004
overflight of the State of Texas developed for the USDA
National Agricultural Imagery Program (NAIP). In order to
achieve a horizontal accuracy of 5 meters, CE90 it was
necessary to reprocess the imagery incorporating new
GPS field control. It should be noted that the imagery was
not tide coordinated so tidal variation may exist between
sorties. The imagery was acquired between November 3,
2004 and November 7, 2004. Imagery was flown with
Leica ADS40 digital sensors to capture 0.9m raw data.
Raw data was then downloaded using Leica GPro
software into 12 bit TIFF format. The raw TIFF imagery
was then georeferenced and reprojected using GPS/INS
200Hz exterior orientation information (x/y/z/o/p/k) to
allow stereo viewable imagery. This stereo viewable
imagery was processed with the GPro/LPS automatic point
matching algorithm to determine common match points
every 2000 pixels across the imagery strip and 333 pixels
along strip. This pattern included dual rows of line ties to
the adjacent line of imagery. The resulting point data was
imported into Leica ORIMA and used to perform a full
bundle adjustment of the imagery point data. Any blunders
were removed, and weak areas were manually
supplemented to ensure good coverage of points.
TerraSurv, Inc. of Pittsburgh, PA was contracted by
EarthData International of Frederick, MD to perform a
geodetic control survey in support of mapping an area
along the southeasterly coast of Texas between Port
Lavaca and Brownsville. Thirty-eight photo identifiable
locations were surveyed to provide ground control and
quality assurance checks for the mapping. Twenty of the
stations were used for mapping control and eighteen of the
stations were used for quality checks. The horizontal
datum was the North American Datum of 1983, CORS
adjustment (NAD 1983 CORS). The vertical datum was the
North American Vertical Datum of 1988 (NAVD
1988). These control points were incorporated into the
ORIMA bundle adjustment to ensure absolute accuracy
requirements were met. The 18 quality check points
coordinates were solved for in the bundle adjustment and
compared to the surveyed results. The output from this
bundle adjustment process was revised exterior orientation
data for the sensor with any GPS/INS, datum, and sensor
calibration errors modeled and compensated for. Using
this revised EO data orthorectified image strips were
created using the USGS NED DEM. The 10m NED DEM
was used where available and 30m DEM was used
elsewhere. The orthorectified image strips were processed
with a internally developed routine that compensates for
the bi-directional reflectance function that is caused by the
sun's position relative to the image area. This
compensated imagery was then imported into Inpho's
OrthoVista 4.0 package which was used for the final
radiometric balance, mosaic, and DOQQ sheet creation.
These final DOQQ sheets contained a 300m minimum
buffer. The sheets for the project area were then
resampled to 2m and mosaicked. For habitat classification,
the mosaicked imagery was divided into six processing
one set of six mosaics for true color and one set of six
mosaics for color-IR. Image segmentation was performed
using on the blue, green, red, and near-infrared bands for
each of the six processing areas.
GPS Ground Control
20070809
Fugro EarthData, Inc.
Harold Rempel
Director of Program Management
mailing and physical
7320 Executive Way
Frederick
MD
21704
USA
301-948-8550
301-963-2064
hrempel@earthdata.com
9:00am - 5:00pm
Universal Transverse Mercator
14
0.999600
-099.000000
+00.000000
500000.000000
0.000000
coordinate pair
1.0
1.0
Meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000000000000000
298.257222096042310000
Digital Imagery
Not applicable
NOAA Coastal Services Center
Clearinghouse Manager
Clearinghouse Manager
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
USA
843-740-1210
843-740-1224
clearinghouse@noaa.gov
Monday-Friday, 8-5 EST
Downloadable Data
Users must assume responsibility to determine the usability of these data.
20210106
NOAA Coastal Services Center
Metadata Specialist
Metadata Specialist
mailing and physical
2234 S Hobson Ave.
Charleston
SC
29405
USA
843-740-1210
843-740-1224
csc@noaa.gov
8:00 am to 5:00 pm EST
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
https://www.coris.noaa.gov/metadata/records/html/TX_ads40_0086051.html
6813