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Metadata Identifier: gov.noaa.csc.maps:2007_FDEM_South_m520
MD_DataIdentification
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2007 - 2008 Florida Division of Emergency Management (FDEM) Lidar Project:
Blocks 1 - 10 (Southeast Florida and Keys)
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This Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey
conducted for the State of Florida Division of Emergency Management LiDAR Project.
These data were produced for the Florida Division of Emergency Management. The LiDAR
point cloud was flown at a density sufficient to support a maximum final post spacing
of 4 feet for unobscured areas. 3001 Inc. acquired the data from July 12, 2007 through
February 8, 2008. The data was divided into 5000' by 5000' cells that serve as the
final tiling scheme. The State of Florida Division of Emergency Management LiDAR Survey
was collected under the guidance of a Professional Mapper/Surveyor.
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SV_Identification
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2007 - 2008 Florida Division of Emergency Management (FDEM) Lidar Project: Blocks
1 - 10 (Southeast Florida and Keys)
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Lidar Final Reports |
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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/fdem/ch2mhill/ |
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3001 Inc. |
LiDAR Department |
lidar@3001inc.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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Florida DEM |
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gis@dca.state.fl.us |
pointOfContact |
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Florida Division of Emergency Management (FDEM) |
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originator |
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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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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/fdem/ch2mhill/ |
Lidar Final Report |
Lidar Final Reports can be accessed in each constituent block subdirectory |
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 |
| 1 |
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-81.817534 |
-80.021117 |
27.565112 |
24.537523 |
2007-07-12 |
2008-02-08 |
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-81.817534 |
-80.021117 |
27.565112 |
24.537523 |
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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 Reports |
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crossReference |
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2008-02-08T00:00:00 |
The Airborne Global Position System (ABGPS), inertial measurement
unit (IMU), and raw scans are collected during the LiDAR aerial survey. The ABGPS
monitors the xyz position of the sensor and the IMU monitors the orientation of the
aircraft. During the aerial survey laser pulses reflected from features on the surface
and are detected by the receiver optics and collected by the data logger. GPS locations
are based on data collected by receivers on the aircraft and base stations on the
ground. The ground base stations are placed no more than 20 km radius from the flight
survey area.
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2008-02-08T00:00:00 |
The ABGPS, IMU, and raw scans are integrated using proprietary software
developed by the Leica Geosystems and delivered with the Leica ALS50 System. The resultant
file is in a LAS binary file format. The LAS file version 1.1 format can be easily
transferred from one file format to another. It is a binary file format that maintains
information specific to the LiDAR data (return#, intensity value, xyz, etc.). The
resultant points are produced in the Florida State Plane East Zone coordinate system,
with units in feet and referenced to the NAD83/90 HARN horizontal datum and NAVD88
vertical datum.
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2008-03-13T00:00:00 |
The unedited data are classified to facilitate the application of
the appropriate feature extraction filters. A combination of proprietary filters is
applied as appropriate for the production of bare-earth digital terrain models (DTMs).
Interactive editing methods are applied to those areas where it is inappropriate or
impossible to use the feature extraction filters, based upon the design criteria and/or
limitations of the relevant filters. These same feature extraction filters are used
to produce elevation height surfaces.
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2008-03-27T00:00:00 |
Filtered and edited data are subjected to rigorous QA/QC according
to the 3001 Inc. Quality Control Plan and procedures. Very briefly, a series of quantitative
and visual procedures are employed to validate the accuracy and consistency of the
filtered and edited data. Ground control is established by 3001, Inc. and GPS-derived
ground control points (GCPs) points in various areas of dominant and prescribed land
cover. These points are coded according to landcover, surface material and ground
control suitability. A suitable number of points are selected for calculation of a
statistically significant accuracy assessment as per the requirements of the National
Standard for Spatial Data Accuracy. A spatial proximity analysis is used to select
edited LiDAR data points within a specified distance of the relevant GCPs. A search
radius decision rule is applied with consideration of terrain complexity, cumulative
error and adequate sample size. Accuracy validation and evaluation is accomplished
using proprietary software to apply relevant statistical routines for calculation
of Root Mean Square Error (RMSE) and the National Standard for Spatial Data Accuracy
(NSSDA) according to Federal Geographic Data Committee (FGDC) specifications.
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2008-08-06T00:00:00 |
The LiDAR mass points were delivered in American Society for Photogrammetry
and Remote Sensing LAS 1.1 format. The header file for each dataset is complete as
define by the LAS 1.1 specification. In addition the following fields are included:
Flight Date Julian, Year, and Class. The data were classified as follows: Class 1
= Unclassified- this class includes vegetation, buildings, noise etc.; Class 2 = Ground;
Class 7 = Noise; Class 9 = Water; Class 12 = Overlap. The datasets were delivered
in the 5000' by 5000' tiling scheme. The tiles are suitable for seamless topographic
data mosaics that include no "no data" areas. The names of the tiles are left padded
with zeros as required to achieve a six character length and all files utilize the
LAS file extension.
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2009-12-01T00:00:00 |
The NOAA Coastal Services Center (CSC) received files in LAS format.
The files contained LiDAR intensity and elevation measurements. CSC performed the
following processing on the data to make it available within Digital Coast: 1. The
data were converted from State Plane Florida West coordinates to geographic coordinates.
2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03.
3. The LAS header fields were sorted by latitude and updated.
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2011-09-19T00:00:00 |
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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