These measurements would complement those of the Graves spacesurveillanceradar, also designed by ONERA, which determines the orbits of satellites flying over France. The Nostradamus radar antenna network
The European radar ABISS for spacesurveillance is a bistatic radar" breadboard," *developed for the European Space Agency (ESA), now experimented by ONERA. The transmitting system is installed in the old NATO base of Crucey in Normandy and the receiving system is in ONERA Palaiseau centre