COURS DE TELEDETECTION PDF

Menu des cours. Calendrier des cours · Cours de Télédétection · Cours de SIG · Cours de GPS. Course. No course has been selected. Please selected a course . Lillesand T.M. and Kiefer R.W., Remote Sensing and lmage lnterpretation, 3rd edition, John Wiley & Sons, , p. Monget J.-M., Cours de teledetection. Les progrès techniques réalisés ces dernières années en télédétection laissent le domaine fluvial et notamment dans l’étude des petits et moyens cours d’eau.

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Remote sensing is increasingly used in order to characterise river corridors. Satellite remote sensing data can only be successful if ccours threshold conditions are met.

The main objective is to study sedimentation and eutrophication processes responsible for the infilling of oxbow lakes. Remote Sensing of the Environment 43, Landsat 7 TM data is used to examine the impact of a series of hydropower dams on the growth rates of riparian vegetation.

A multispectral supervised classification has allowed for the production of a spatial distribution map of conifers along a 7 km river reach fig. Supervised classification was used to segment the SPOT 5 image in three classes: Agrandir Original png, 17k. Table des illustrations Titre Fig.

Recent progress in teledetectiion sensing is promising significant advances in fluvial sciences particularly in the study of small and medium rivers.

CU-SIGETA | Centre universitaire SIG et Teledetection au Burkina Faso

Furthermore, satellite data can now be complemented by catchment scale high resolution airborne orthorectified imagery often collected by national agencies such as the IGN. Celle-ci permet le calcul de la semi-variance teledftection.

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These maps have also allowed us to measure that teledeetection distance travelled by the sediment is between m to m thus demonstrating the use of imagery for the evaluation of river management works.

This type of data has a markedly higher resolution, down to centimetric scales, and it is much easier to coordinate the acquisition of airborne data with field data.

HunterBertrand Moulin et Mathieu Gagnage. La dynamique temporelle des corridors fluviaux. Validation of this model is shown in fig.

Data acquisition can now be planned on a multi-annual basis and reledetection from a range of platforms such as standard survey aircraft, helicopters, ultralight aircraft or unmanned aerial vehicles UAVs.

Second, we show an example of grain-size mapping. Photogrammetric Record 16, In recent years, new satellite data teedetection begun to offer data on metric e. Etat de la bande active en Remote Sensing of Environment Agrandir Original png, 29k.

However, numerous factors can limit this application of remote sensing.

These threshold conditions insure that the remotes sensing data if of sufficient spatial and temporal resolution to adequately characterise the river and the surrounding floodplain. This has allowed for teledeteciton sediment budget of the reach to be established tab.

Tools in Fluvial Geomorphology. Our objective is to use SPOT 5 imagery in order to identify origin and retention points for the entire catchment. NDVI longitudinal variation profile coefficient of variation calculated on ash and poplar data coverage on an image B.

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These field surveys confirm the presence of favourable conditions to the presence of woody debris teledeteciton. Deux exemples illustrent ces propos. However, the SPOT 5 image cannot explicitly detect woody debris due to insufficient spatial resolution.

Earth Surface Processes and Landforms In order to offset this limitation, field surveys were conducted in order to localise woody debris. A quick look at a large river. Freshwater Biology 29, Paper presented at the Braided Rivers Conference, Br. Furthermore, the temporal acquisition rate of data must be capable of sampling rapid change, sometimes on the order of a few hours post-flood.

Cours de télédétection spatiale

Here we illustrate two key applications of high-resolution airborne data: Hydrological Processes Therefore, this data clearly localises the impact of dw dam on vegetation health.

For example, we discuss a study of morphological change following a sediment management program aiming to redress the reach scale sediment deficit resulting from the construction of dams. First, we discuss the lower Ain valley. Following established methods Carbonneau et al.