XRAY could have several meanings.
Here I focus on milspeak for the letter X
A few things that are X-7
Pics related
It may be that MK-ULTRA in the pop music industry started at least as far back as Nashville - The Grand Ol Opry - in the early 1960s.
SAT_REC_GOOD
>~~Satellite recording is good~~
More likely satellite reception is good
For the rest, your suggestions are reasonable.
Ping is probably IP ping, a command that instructs a remote node to echo back certain data. Purpose is to check connectivity of the IP routing protocol layer, to measure propagation delay, and to echo optional data characters for testing purposes.