Thats the free way along with exocraft having direct access to a drop pod only scanner options... on the scanner when you press to open the exocrafts menu with down...ah, you mean only via mission rewards?
The other free way is Ancient Data Structures on planets..
Before the Nav data could be fed 1 at a time into the signal booster with multi choices of what to scan for, this no longer applies... its RNG now unless you have a Drop Pod Coordinate Data to feed it ...
Now to get drop pod data you must earn via missions. scan with Analysis Visor for Ancient Data Structures to pick them up or pay with credits at a planet base...