Word "corona" evolved from Latin , which is same as Crown in English.
Even I can't give any reference, as far as I know corona discharge of Sun and spy satellite project both having common name 'corona' is not intentional. But both naming was targeted for meaning Crown.
Corona discharge is bearing this name for beautiful shining compare with crown.
Satellite project corona took name from model of typewriter sitting on desk during name selection. This project was considered as having greater power over something and naming it with something like crown seem well justified.
Two separate events, unique in own, crown reference is perfect and both have no relation in term of naming connection...