Aeronautical date link is the wireless date communication system connecting between aircraft and ground facilites such as control centers and airline companies.

    VHF ACARS and VDL mode 2 are widely used as aeronautical data links. Since the systems have only low data transmission rates, their performances are insufficient to accommodate growing future demands and newly emerging applications for aeronautical communications.

    When traffic or applications of the communications increase, we need new data links with higher transmission rates, more powerful error correction and other advanced functions to transfer information to peer efficiently and safely. Currently, several countries in Europe and the United States have been investigating technical specifications of new high speed air-ground data links. Since aeronautical communication systems are used worldwide, we need to verify in advance that the new high speed systems are feasible for use in Japanese airspace or not.

    ENRI contributes to the international tasks through the works such as evaluation of emission quality and data transmission performances for the new data links.