FILES IN SPACE: MANAGEMENT TRANSFER

摘要

File structures are increasingly used on spacemissions both for payload science/observation data storage andfor platform telecommands and housekeeping telemetries.On current missions, these file structures are specificallydesigned on a case-by-case basis with adapted communicationprotocols for Board/Ground file transfer and handling. Twostudies on that field have been undergone by Thales Alenia Spacefor CNES on the last two years: a study in 2011/2012 on the filetransfer systems (state of the art, trade-off and prototyping), anda second in 2012/2013 on the file management systems(specification and prototyping).The second study is still on-going, aiming at designing a genericfile management system to suite general file implementations,compatible with the current file transfer protocols and coveringthe current and anticipated needs.This presentation provides some of the results of these studiesand highlights the impact of file operations on board/groundcommunication sessions and on-board avionics & flight software.