READBACK

摘要

In the August 2019 Readback, your reply to the writer who was referring to the "More ILS vs. LPV" article (February 2019) errs when you say that "GPS is a single receiver system for various satellites and WAAS ground station(s)." WAAS data is transmitted to users from geostationary communications satellites. Currently three geo comsats are broadcasting WAAS signals covering North America.