Speaker
Mr
Antonio Tramutola
(Thales Alenia Space)
Description
Euclid satellite shall provide storage capability up to 850Gbits per day of scientific data acquired from NISP and VIS instruments. As a consequence, taking into account autonomy requirements, a Mass Memory Unit with storage capacity of 4Tbits has been specified.
TM data are stored in files, thus MMU implements a file system structured in two levels of directories. The MMU has also the capability to downlink files to ground station via CFDP protocol through direct K band link.
File uplink is possible through CDMU via Xband using CFDP as well.
Communication between CDMU and MMU has been specified via MIL-STD-1553B bus to exchange files data and in general TC and TM.
This peculiar implementation of on-board data management and ground communication has required a tailoring of the standard CCSDS CFDP protocol.
