In the past few weeks looking at KSEA track logs, I’ve noticed that near the airport “Reporting Facility” has switched from our feeder ADS-B data (for planes so equipped) to something called “Airport Surveillance”.
Is this Airport Surface Detection Equipment, Model X (ASDE-X) radar, i.e. ground radar meant for taxiing in bad weather?
Why was this change made?
I’ve always found it kinda neat when looking at track logs to see my alias next to one of the track points.
MLAT points have always been replaced with “Seattle Center” (which I presumes means TRACON) ones for the obvious reason that MLAT data is not very precise. But why switch from ADS-B?