Skip to Main content Skip to Navigation
Conference papers

Coupling potential of ICESat/GLAS and SRTM in the discrimination of forest landscape types in French Guiana

Abstract : In this study, waveforms acquired by the Geoscience Laser Altimeter System (GLAS) were used to analyze the difference between GLAS and SRTM elevations in the aim of discriminating the five forest landscape types (LTs) in French Guiana (Table 1). First, two differences were calculated: (1) penetration depth defined as GLAS highest minus SRTM elevations, and (2) GLAS centroid minus SRTM elevations. The behaviour of these two variables was studied for the different LTs as a function of GLAS canopy height and SRTM roughness index. Next, the classification potential of the five forest landscape types (LTs) using the coupling of GLAS and SRTM was assessed using the Random Forest algorithm. This classification was conducted using the penetration depth, difference between GLAS centroid and SRTM elevations, GLAS canopy height (Hc) (difference between the ground peak and signal start) and SRTM roughness index (R). Finally, using the changes occurring to the GLAS signal in different seasons, the potential of LT discrimination using these changes was studied.
Mots-clés : SRTM GLAS GUYANE FRANCAISE
Document type :
Conference papers
Complete list of metadata

https://hal.inrae.fr/hal-02599404
Contributor : Migration Irstea Publications <>
Submitted on : Saturday, May 16, 2020 - 2:39:22 AM
Last modification on : Tuesday, June 15, 2021 - 2:57:32 PM

Identifiers

  • HAL Id : hal-02599404, version 1
  • IRSTEA : PUB00040220

Citation

I. Fayad, N. Baghdadi, V. Gond, Jean-Stéphane Bailly, Nicolas Barbier, et al.. Coupling potential of ICESat/GLAS and SRTM in the discrimination of forest landscape types in French Guiana. IGARSS 2014, Jul 2014, Quebec, Canada. pp.4. ⟨hal-02599404⟩

Share

Metrics

Record views

45