• South America
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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 (Création)
1996-01-01
Identificateur
CEBA_ALS_BRGM_xxXXXX1996
Reconnaissance

SOCIÉTÉ ALTOA

Etat
Finalisé
Contact pour la ressource
Nom de l'organisation Nom de la personne Adresse e-mail Rôle

Bureau de Recherches Géologiques et Minières (BRGM)

Bourgine, Bernard

b.bourgine@brgm.fr

Point de contact
Fréquence de mise à jour
Inconnue

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

Mots clés
  • local coverage

  • labex CEBA

Thème
  • aerial laser scanning (ALS)

Localisation
  • Cayenne

Limitation d'utilisation

Please get in touch with a point of contact.

Contraintes d'accès
Autres restrictions
Autres contraintes

Unknown

Restrictions de manipulation
Non classifié
Type de représentation spatiale
Vecteur
Distance de résolution
0.35  m
Langue de la ressource

eng

Encodage des caractères
Utf8
Catégorie ISO
  • Altimétrie
N
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Date de début
1996-01-01
Date de fin
1996-12-31
Informations supplémentaires

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

Nom du système de référence
EPSG / CSG67 / UTM zone 22N (EPSG:2971) / 7.9
Format (encodage)
Nom Version

unknown

1

Ressource en ligne
Protocole Adresse Internet Nom

WWW:LINK-1.0-http--related

http://www.researchgate.net/publication/236882502_Generation_of_a_ground-level_DEM_in_a_dense_equatorial_forest_zone_by_merging_airborne_laser_data_and_a_top-of-canopy_DEM/file/e0b49519e0e04cb0bd.pdf

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

Niveau
Jeu de données
Généralités sur la provenance

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.

Métadonnées

Identifiant de la fiche
b5219540-0170-4caf-8a0f-69c1cc6a0e7c XML
Langue

eng

Jeu de caractères
Utf8
Type de ressource
Jeu de données
Date des métadonnées
2017-05-04T15:02:42
Nom du standard de métadonnées

ISO 19115:2003/19139

Version du standard de métadonnées

1.0

Contact
Nom de l'organisation Nom de la personne Adresse e-mail Rôle

Bureau de Recherches Géologiques et Minières (BRGM)

Bourgine, Bernard

b.bourgine@brgm.fr

Point de contact

Institut de recherche pour le développement (IRD)

CEBA géoportail

ceba.geoportail@ird.fr

Point de contact
 
 

Aperçus

Étendue spatiale

N
S
E
W


Mots clés

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

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