• Guyane-SIG
  •  
  •  
  •  

Aerial laser scanning (LIDAR) survey over French Guiana conducted by French Geological Survey (BRGM) in 1996.

The airborne data comprises laser elevation data acquired during an airborne geophysical survey over French Guiana in 1996. The study area, located along the coast in the south of Cayenne in French Guiana, measures 45 km x 55 km. The area is characterized by virgin forest and savannah. Most of the area is flat or slightly undulating, with elevation ranging from 0 to about 400 m above sea level. (e.g. Kaw mountain).

Simple

Date (Creation)
1996-01-01
Identifier
CEBA_ALS_BRGM_xxXXXX1996
Credit
SOCIÉTÉ ALTOA
Status
Completed
Point of contact
  Bureau de Recherches Géologiques et Minières (BRGM) - Bourgine, Bernard
Maintenance and update frequency
Unknown
GEMET - INSPIRE themes, version 1.0 INSPIRE themes
  • Elevation
Geounits
  • Americas
  • South America
  • France
  • French Guiana
GEMET - Concepts, version 2.4
  • laser
  • remote sensing
  • vegetation cover
Keywords
  • local coverage
  • labex CEBA
Theme
  • aerial laser scanning (ALS)
Place
  • Cayenne
Use limitation
Please get in touch with a point of contact.
Access constraints
Other restrictions
Other constraints
Unknown
Classification
Unclassified
Spatial representation type
Vector
Distance
0.35  m
Metadata language
eng
Character set
UTF8
Topic category
  • Elevation
N
S
E
W
thumbnail


Begin date
1996-01-01
End date
1996-12-31
Supplemental Information
Bibliography : Bourgine B., Baghdadi N., Hosford S., and Daniels P., 2004. Generation of a ground-level DEM in a dense equatorial forest zone by merging airborne laser data and a top-of-canopy DEM. Canadian Journal of Remote Sensing, vol. 30, no. 6, pp. 913-926
Reference system identifier
EPSG / CSG67 / UTM zone 22N (EPSG:2971) / 7.9
Distribution format
  • unknown ( 1 )

OnLine resource
Bourgine B., Baghdadi N., Hosford S., and Daniels P., 2004. Generation of a ground-level DEM in a dense equatorial forest zone by merging airborne laser data and a top-of-canopy DEM. Canadian Journal of Remote Sensing, vol. 30, no. 6, pp. 913-926 ( WWW:LINK-1.0-http--related )
Hierarchy level
Dataset
Statement
Flight lines were oriented N30° with a 500-m spacing, complemented by transverse flight lines oriented N120° with a 5-km spacing. Laser sampling density was approximately 7 m along flight lines (sampling frequency = 10 Hz). Laser wavelength is 905 nm and footprint size is 35 cm. The laser measurements are therefore considered as point data. The available laser data correspond to the first pulse returned, i.e. the first obstacle encountered. As these laser data were acquired for the purpose of checking the quality of the geophysical survey, particularly the flight ground clearance, a low sampling frequency was chosen and only the first pulse considered. The quality of the airborne data was assessed by examining the errors at flight-line intersections (lines N030° and N120°). Assuming that the errors related to linear interpolation carried out in the vicinity of flight-line intersections are insignificant for flat terrain (elevation <10 m), then elevation accuracy for the filtered data is estimated at around +-2 m.
File identifier
b5219540-0170-4caf-8a0f-69c1cc6a0e7c XML
Metadata language
eng
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2017-05-04T15:02:42
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  Bureau de Recherches Géologiques et Minières (BRGM) - Bourgine, Bernard
Point of contact
  Institut de recherche pour le développement (IRD) - CEBA géoportail
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

aerial laser scanning (ALS)
GEMET - Concepts, version 2.4
laser remote sensing vegetation cover
GEMET - INSPIRE themes, version 1.0 INSPIRE themes
Elevation

Provided by

logo

Share on social sites

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •