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Metadata Identifier: gov.noaa.csc.maps:2006_FL_Volusia_m35
MD_DataIdentification
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2006 Volusia County, Florida Lidar |
This dataset is the lidar data for Volusia County, Florida, approximately
1,432 square miles, acquired in early March of 2006. A total of 143 flight lines of
Lidar data were acquired in eleven sessions between 2-8 March 2006. This dataset is
comprised of 1,591 LiDAR files, based on the Volusia County 5,000' by 5,000' sheet
index system, in the LAS file format. The raw data was collected at an average ground
sample distance of 1-meter (3.3 ft), and the bare earth was classified and used as
a basis for the 2006 Volusia Countywide Digital Orthophoto Project. Lidar was collected
to support DTM development suitable to generate 1 foot contours that meet 2 foot contour
accuracy specifications. This data is not intended for engineering, design, water
modeling, or any other purposes other than as stated within this document. This data
is intended for orthophoto rectification purposes only. The lidar data classifications
in this data set are: unclassified, ground and high vegetation. NOTE: Please be aware
that there are returns from the water surface that are classified as ground, as well
as unclassified.
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SV_Identification
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2006 Volusia County, Florida Lidar |
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Lidar Final Report |
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None |
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North American Datum 1983 |
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resourceProvider |
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
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Citation URL |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/volusia/Final%20MTS%20Report_Volusia%20County%20FL_30Oct2007_DTM.pdf |
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Arden Fontaine |
Volusia County Public Works Department |
Special Projects Manager |
afontaine@co.volusia.fl.us |
pointOfContact |
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Chris O'Neill |
Woolpert, Inc. |
Technical Operations Manager |
chris.oneill@woolpert.com |
processor |
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NOAA CSC (originator) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
originator |
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NOAA CSC (publisher) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
publisher |
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NOAA CSC(distributor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
distributor |
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NOAA CSC (processor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
processor |
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EPSG Registry |
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European Petroleum Survey Group |
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publisher |
http://www.epsg-registry.org/ |
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Mike Sutherland(author) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
author |
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Mike Sutherland |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
distributor |
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Pamela Grothe |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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processor |
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Volusia County Public Works Department |
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originator |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/volusia/Final%20MTS%20Report_Volusia%20County%20FL_30Oct2007_DTM.pdf |
Lidar Final Report |
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information |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.
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search |
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http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
NAD83 |
Link to Geographic Markup Language (GML) description of reference system. |
information |
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Ellipsoid in Meters |
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urn:ogc:def:crs:EPSG::4269 |
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Bounding Box |
Temporal Extent |
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-81.680128 |
-80.733305 |
29.426977 |
28.612988 |
2006-03-02 |
2006-03-08 |
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-81.680128 |
-80.733305 |
29.426977 |
28.612988 |
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Lidar Use Limitation |
These data depict the elevations at the time of the survey and are only
accurate for that time. Users should be aware that temporal changes may
have occurred since this data set was collected and some parts of this data may no
longer represent actual surface conditions. Users should not use this data
for critical applications without a full awareness of its limitations. Any conclusions
drawn from analysis of this information are not the responsibility of NOAA
or any of its partners. These data are NOT to be used for navigational purposes.
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Ellipsoid |
Ellipsoid in Meters |
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NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
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Lidar Final Report |
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crossReference |
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2006-08-15T00:00:00 |
The LiDAR data was acquired using a Leica ALS50 from an altitude of
1,000-meters above ground level to provide an average ground sample distance of 1-meter.
The scanner field of view was 44-degrees, and the scan rate was 33-hertz. First and
last return data was collected along with the signal return intensity. Two redundant
airborne GPS bases stations were utilized during the data acquisition with maximum
line-of-sight distance between the base station and aircraft of 20-km. The LiDAR data
was reduced using Grafnav (Waypoint Consulting) for GPS post-processing, PosProc (Applanix
Crop) for IMU processing, ALS50 Post Processor (LH Systems) to initial LiDAR processing,
TerraScan (Terrasolid) for initial point classification, and proprietary Woolpert
developed software for refining the point classification and QC. The LAS files contain
3 classifications: 1 = default which contains non ground features such as buildings,
cars, trees, bridges, etc.; 2 = bare earth; and 5 = non ground from first return which
contains trees, power lines, etc..
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2008-04-15T00:00:00 |
The NOAA Coastal Services Center (CSC) received the files in LAS format.
The files contained Lidar intensity and elevation measurements. The data was in Florida
State Plane Projection and NAVD88 vertical datum. CSC performed the following processing
to the data to make it available within the LDART Retrieval Tool (LDART): 1. The data
were converted from Florida State Plane East, Zone 0901 coordinates to geographic
coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80
(ellipsoid) heights using Geoid 03. 3. The vertical unit of measure for the data was
converted from feet to meters. 4. The LAS data were sorted by latitude and the headers
were updated.
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2009-07-14T00:00:00 |
The NOAA National Geophysical Data Center (NGDC) received lidar data
files via ftp transfer from the NOAA Coastal Services Center. The data are
currently being served via NOAA CSC Digital Coast at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are archived in LAS
or LAZ format. The LAS format is an industry standard for LiDAR data developed by
the American Society of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless
compressed version of LAS developed by Martin Isenburg (http://www.laszip.org/). The
data are exclusively in geographic coordinates (either NAD83 or ITRF94). The data
are referenced vertically to the ellipsoid (either GRS80 or ITRF94), allowing for
the ability to apply the most up to date geoid model when transforming to orthometric
heights.
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