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
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SOCIÉTÉ ALTOA
- Etat
- Finalisé
- Contact pour la ressource
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Nom de l'organisation Nom de la personne Adresse e-mail Rôle Bureau de Recherches Géologiques et Minières (BRGM)
Bourgine, Bernard
Point de contact
- Fréquence de mise à jour
- Inconnue
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GEMET - INSPIRE themes, version 1.0 INSPIRE themes
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Geounits
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Americas
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South America
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France
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French Guiana
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GEMET - Concepts, version 2.4
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laser
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remote sensing
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vegetation cover
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- Mots clés
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local coverage
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labex CEBA
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- Thème
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aerial laser scanning (ALS)
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- Localisation
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Cayenne
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- Limitation d'utilisation
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Please get in touch with a point of contact.
- Contraintes d'accès
- Autres restrictions
- Autres contraintes
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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
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- Altimétrie
))
- Date de début
- 1996-01-01
- Date de fin
- 1996-12-31
- Informations supplémentaires
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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)
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Nom Version unknown
1
- Ressource en ligne
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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
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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
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eng
- Jeu de caractères
- Utf8
- Type de ressource
- Jeu de données
- Date des métadonnées
- 2017-05-04T15:02:42
- Nom du standard de métadonnées
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ISO 19115:2003/19139
- Version du standard de métadonnées
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1.0
- Contact
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Nom de l'organisation Nom de la personne Adresse e-mail Rôle Bureau de Recherches Géologiques et Minières (BRGM)
Bourgine, Bernard
Point de contact Institut de recherche pour le développement (IRD)
CEBA géoportail
Point de contact