 The intelligence systems are a Stratus radar operating on the L-band for trajectory tracking, a Gascogne, two Armor, and one Savoie radars for missile tracking operating on the C-band.Furthermore, there are six Antares telemetry-tracking radars operating on the E and F-bands, a laser-radar, and an optical tracking unit, and 14 antennas for telemetry.In 2009, the Stratus and Savoie radars were replaced by a Normandie radar for the trials of the M51 missile.