We don't have synonyms for symphonie yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are symphony, symphonic and symphonia.
(N) :
The Symphonie satellitesAAAF Conference: From Symphonie to Spacebus, March 2006, by Jean-Jacques Dechezelles (2 satellites orbited) were the first communications satellites built by France and Germany (and the first to use three-axis stabilization in geostationary orbit with a bipropellant propulsion system) to provide geostationary orbit injection and station-keeping during their operational lifetime.
(N) :
The Symphonie satellitesAAAF Conference: From Symphonie to Spacebus, March 2006, by Jean-Jacques Dechezelles (2 satellites orbited) were the first communications satellites built by France and Germany (and the first to use three-axis stabilization in geostationary orbit with a bipropellant propulsion system) to provide geostationary orbit injection and station-keeping during their operational lifetime.