Context

The SVOM satellite (Space-based multi-band astronomical Variable Objects Monitor) is dedicated to the detection, localization and study of Gamma-Ray Bursts (GRBs) and other high-energy transient phenomena MXT is one of the two instruments composing the SVOM French payload. It is specialized in GRB follow-up observation using a X-ray sensitive camera composed of a detector and a Front End Electronic (FEE) to detect and image X-ray photons in the 0.2keV – 10keV energy band Data observation are processed to achieve source localization, cosmic ray rejection and detector calibration.

CS Group responsabilities for MXT instrument Software embedded into the SVOM satellite are as follows:

Design, Development, Integration

The features are as follows:

Platform (PDPU) and camera (FEE) interfaces (Spacewire links)
Telecommand execution and telemetry generation (VHF, S-band and X-band)
Functional modes
Camera power supply
Camera mechanism (shutter)
Thermal control and regulation
Monitoring and fault detection, isolation and recovery
Science data processing (partition provided by the French laboratory LAL)

Project implementation

The project objectives are as follows:

MXT is one of the 2 instruments of the SVOM French payload. It is specialized in GRB follow-up observation
CS GROUP had to provide the MXT instrument Application Software embedded into the Data Processing Unit (MDPU) in charge of managing

The processes for carrying out the project are:

V Cycle, ECSS Level B and C

Technical characteristics

The solution key points are as follows:

Software based on LVCUGEN, a Time and Space Partitioning (TSP) solution, and LibPus, an ESA Packet Utilization Standard (PUS) library, both of them industrialized by internal software teams.

Archi Picture

The main technologies used in this project are:

Domain	Technology(ies)
Hardware environment(s)	GR712RC Dual-Core LEON3FT, Spacewire links
Main COTS library(ies)	LVCUGEN (TSP-based solution), LibPus library