Decisions of the World Radiocommunication Conference 2023 and Their Impact on Earth Observations

The Radio Regulations (RR) is the international treaty describing the rules for use of the electromagnetic spectrum. The RR are revised approximately every four years during World Radiocommunication Conferences (WRCs), organized by the International Telecommunication Union (ITU). During the last WRC, held at the end of 2023, several decisions have been made that are relevant for Earth Observation (EO). In addition, the last WRC has set the agenda for the work to be carried out in preparation for the next WRC, in 2027, which again may have significant implications for EO science.This paper presents the decisions made at WRC-23 that are relevant for the remote sensing community, including the agenda for WRC-27.