ELISA (ELectronic Intelligence by SAtellite) is a suite of four French military satellites launched on 17 December 2011 from Arianespace's Kourou spaceport in French Guiana.
The ELISA program is a demonstrator meant to pave the way for a planned Signals intelligence constellation called CERES.
The ELISA satellites are in a Low Earth orbit a few kilometers from each other to record radar and radio transmissions.
[1] The satellites are built around the Myriade microsatellite bus.
This article about one or more spacecraft of France is a stub.