PRISMA formation-flying demonstration

PRISMA was a Swedish-led two-spacecraft testbed for autonomous formation flying and rendezvous. The maneuverable Mango spacecraft approached and flew around the cooperative Tango target, comparing GPS, radio-frequency metrology, and optical navigation. Partners included DLR, CNES, and the Technical University of Denmark. Separate propulsion experiments tested green propellant and microthrusters. This mission is distinct from Italy’s later PRISMA hyperspectral-imaging satellite.