Tsiklon (meaning cyclone, Russian: Циклон) is the first Soviet satellite navigation system, developed in the former Soviet Union.
From 1967 to 1978 a total of 31 Zaliv satellites were launched onboard Kosmos-3 and Kosmos-3M rockets, from the Kapustin Yar and Plesetsk launch sites.[1] The project was conceived in the 1950s and the draft proposal was approved in 1962, but was not made operational until 1972 due to delays.[2]
The successor satellites to Tsiklon were Parus and Sfera. Currently, Russia operates the GLONASS system.