Data access

theia.cnes.fr

Presentation

The Venµs science mission is a joint research mission undertaken by CNES and ISA, the Israel Space Agency. It aims to demonstrate the effectiveness of high-resolution multi-temporal observation optimised through Copernicus, the global environmental and security monitoring programme. 

Venµs, to be launched in June 2017, will cover once every two days at least 50 sites representative of the main terrestrial and coastal ecosystems in the world. The 20-metre-resolution images will be taken in 12 spectral bands in the visible and near-infrared ranges.

Contact

Olivier Hagolle
Cesbio
@O.Hagolle
Tous les articles

Satellite

Name : Venµs

Imaging mode : optical

Spectral bands : bands from visible to near infrared

Resolutions : 10 m

Observation capability : 

  • Swath : 27 km
  • Revisit : 2 days

Coverage : 

  • Areas : 110 areas in the world
  • Period : from Venµs launch

For more information see venus.cnes.fr.

Level

Level 1 : Single date product, Top Of Amosphere (TOA) reflectances, calibrated and geocoded.

Level 2 : Single date product, surface reflectances after cloud masking and atmospheric correction. 

Level 3 : Multidate product, synthesis of cloud free pixels from the level 2 products acquired during a small period of time, it will be produced every 15 days.

Products Format

Level 1 

A light description of Venµs L1 data is given  here.

More information on geometrical image quality are available in this pdf file or at the following address.

Additional information on solar irradiance and  Earth-Sun distance is provided here

Venµs spectral characteristics are detailed here.

Level 2

Level2 products provide surface reflectances after atmospheric correction, along with masks of clouds and their shadows.

Data is processed by MAJA chain (before called MACCS) for Theia land data center.

MAJA Algorithm Theoretical Basis Document (ATBD)