Dataset Identification:
Resource Abstract:
- description: ASCII XYZ point cloud data were produced from remotely sensed, geographically referenced elevation measurements
by the U.S. Geological Survey (USGS). Elevation measurements were collected over the area using the National Aeronautics and
Space Administration (NASA) Experimental Advanced Airborne Research Lidar (EAARL), a pulsed laser ranging system mounted onboard
an aircraft to measure ground elevation, vegetation canopy, and coastal topography. The system uses high-frequency laser beams
directed at the Earth's surface through an opening in the bottom of the aircraft's fuselage. The laser system records
the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The
plane travels over the target area at approximately 50 meters per second at an elevation of approximately 300 meters, resulting
in a laser swath of approximately 240 meters with an average point spacing of 2-3 meters. The EAARL, developed originally
by NASA at Wallops Flight Facility in Virginia, measures ground elevation with a vertical resolution of 3 centimeters. A sampling
rate of 3 kilohertz or higher results in an extremely dense spatial elevation dataset. Over 100 kilometers of coastline can
be surveyed easily within a 3- to 4-hour mission. When resultant elevation maps for an area are analyzed, they provide a useful
tool to make management decisions regarding land development.; abstract: ASCII XYZ point cloud data were produced from remotely
sensed, geographically referenced elevation measurements by the U.S. Geological Survey (USGS). Elevation measurements were
collected over the area using the National Aeronautics and Space Administration (NASA) Experimental Advanced Airborne Research
Lidar (EAARL), a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation, vegetation canopy, and
coastal topography. The system uses high-frequency laser beams directed at the Earth's surface through an opening in
the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam
and the reception of the reflected laser signal in the aircraft. The plane travels over the target area at approximately 50
meters per second at an elevation of approximately 300 meters, resulting in a laser swath of approximately 240 meters with
an average point spacing of 2-3 meters. The EAARL, developed originally by NASA at Wallops Flight Facility in Virginia, measures
ground elevation with a vertical resolution of 3 centimeters. A sampling rate of 3 kilohertz or higher results in an extremely
dense spatial elevation dataset. Over 100 kilometers of coastline can be surveyed easily within a 3- to 4-hour mission. When
resultant elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land
development.
Citation
- Title EAARL Coastal Topography-Louisiana, Alabama, and Florida, June 2008.
-
- creation Date
2018-05-21T13:01:51.661442
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T23:58:28Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T23:58:28Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:c6b0a1e0-0438-49e0-a2dd-044f8ae5bbc1
Metadata record format is ISO19139 XML (MD_Metadata)