This is the fourth issue of the CANDELA Newsletter with main updates of the work done by the consortium during months up to March 2020. The current issue contains several technical articles as well focusing on the following topics: Use of Deep Learning, System Architecture Design and Operational Scenarios, Validation Process in CANDELA project. Finally, it includes the second part of the team presentation of the following companies IRIT, SmallGIS, TerraNIS, and a list of past and future events.

All this information and more can be found opening the PDF below.