The Probert Encyclopaedia of Aircraft

DIAPASON 1A

The Diapason 1A was a French geological research satellite launched in 1966 with the purpose of establishing the earth's shape and precise intercontinental distances. The Diapason 1A was a simple cylinder, about 50 cm in diameter and 20 cm long with four unfolding solar panels to provide electrical power in orbit.
Research Diapason 1A