GEDI Measurements of Topography, Height and 3D Structure Measurements
Abstract
The Global Ecosystem Dynamics Investigation (GEDI), collecting science data on the International Space Station since April 2019, is a medium-footprint (25m diameter) laser altimeter system measuring surface topography, 3d vertical extent and structure. Utilizing 8 beams, a total of 10 billion measurements are expected after 2 years on orbit. GEDI utilizes a waveform-based approach to record surface structure within each laser footprint. Here we provide an overview of the Level2A data products, and describe the algorithms used to derive surface elevation, height and structure measurements from the GEDI waveforms. Validation of the data products are also presented involving GEDI to GEDI crossovers and GEDI to full-waveform airborne lidar observations collected using NASA's LVIS Facility.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMB029...03H
- Keywords:
-
- 0410 Biodiversity;
- BIOGEOSCIENCES;
- 0428 Carbon cycling;
- BIOGEOSCIENCES;
- 0439 Ecosystems;
- structure and dynamics;
- BIOGEOSCIENCES;
- 0480 Remote sensing;
- BIOGEOSCIENCES