Preliminary satellite layout:

The payload includes numerous sensors to observe the TLEs and to perform in-situ measurements of perturbations caused on the local plasma (fields, waves and particles). The satellite uses a platform from the MYRIADE series. The upper side, which carries the payload, will be pointed towards Earth.

The payload includes the following elements:

MCP, set of 2 cameras and 3 photometers,

30 images/s, 512x512 pixels and luminance measurements of the different high-resolution spectral bands;

XGRE, set of 3 X and rays detectors,

measurements of high-energy photons between 20 keV and 10 MeV and relativistic electrons between 1 MeV to 10 MeV;

IDEE, set of 2 electron detectors,

measurements of high-energy electron spectrums between 70 KeV and 4 MeV;

IME-BF, LF antenna to measure electric fields,

measurement of an electric component between 0 and 1 MHz;

IME-HF, HF antenna to measure electric fields,

measurement of an electric component between 100 kHz and 30 MHz

IMM, a triaxes search coil magnetometer to measure the alternative magnetic field:
- IMM-BF, 2 mono-band coils to measure the LF field;
- IMM-MF, 1 dual band coil to measure the LF and MF field;

measure 3 components of between a few Hz to 20 kHz and of a component of 10 kHz up to 1 MHz;

MEXIC, a set of 2 electronic boxes comprised of the 8 analyzers associated with the instruments, providing electronic power to the instruments, management of the payload modes and the interface with the Mass Storage and the platform computer. MEXIC also ensures the synchronization of the instruments from events detections by the photometers.

MEXIC main functions are:


provide secondary voltage to the various instruments,
receive data from Platform computer and decode the Time Tagged commands from PL workplan established by the CMS, commands processed one-by-one (without having to manage due dates),
receive and decode immediate commands sent by the platform (SHM, for example),
manage the instruments (ON/OFF, configuration, modes),
monitor correct operation of PL (Temperatures, consumption, etc.),
implement the trigger strategy for instruments according to the event,,
manage the acquisition sequence triggered by an event,
format and date data, both scientific and housekeeping in X band,
format and date housekeeping data in S band,
manage the transfer of data to the Mass Storage,
serve as a host structure for instrumentation analysers,
make it possible make in-flight modifications to analyzer software,
make it possible to make in-flight modifications to the MEXIC software.