After Satellite Uplink is built in one of your bases scanning with increasing range starts automatically.
The scanning is revealing sites as it expands (in the same way as now but only from bases) and the player still has to explore each individual site. However, if a new Pandoran base is built within the existing scanning range it is revealed straight away.
There will be no more scanning from the aircraft but we will reintroduce the old exploration system from backer builds which we call organic exploration. It means that contacting a haven will reveal nearby havens and scavenging sites.