Originally Posted by
Dick Smith
For $160million? Why wouldn’t you have an accurate baro?
Where's the baro information obtained from?
I presume you're aware of incidents where the wrong baro figure was entered to the box? Hearing or finger trouble. SBAS isn't hobbled by these types of issues.
Other than a few ground stations for the whole area it serves SBAS doesn't require ground base infrastructure at or near each airport.