Theory ahead.
Assumptions. Whatever is sending these things wants to be found but doesn’t like the idea of a military vanguard leading the way hence giving us clues. Whatever or whoever is sending these requires a certain level of technical ability which is seen in the encoding of the messages from the UA's and UP's. It is also preprograming and automating the UA’s and UP’s. UA's have been around a long time. The first scan of one kicked off the UP launch process.
UA gets scanned and in turn scans your ship. This results in a Morse rendition of the ship being sent to you. Perhaps it was a broadcast meant for a central receiver? So this receiver learns about our ships from the UA scan and encodes a rough HUD look alike into a sound waveform. It also launches UP’s to further analyse our species loaded up with this data. The encoding isn’t perfect, or the initial scan or our ships wasn’t perfect, and has many artefacts of our hud encoded with the main image. To the left are ghost images of the artificial horizon indicators used in planetary flight, to the right we see parts of our central console image. The main image is of our target direction display. This gives us a map and instruction. The rest is just noise.
Could it be that the UP tells us which planet just by pointing and the rest says go to this planet, it has no atmosphere, land, go to this point? Co-ords are 3.142 , 3.142. Or iterations of pi positive and negative.
I tried 31.0 , 42.0 on Merope 5c and found a data point but don’t have a lot of time to explore much. Working 12 hours a night for 3 weeks in the middle of the North Sea doesn’t leave much free time and the internet connection is poor at best.
A lot of the theories I’ve been reading are very interesting but seem just too obscure or overly complex. As a few have said, keep it simple.