On: Super-Accurate GPS Chips Coming to Smartphones in ...

[bb611]

Commercial airliners use a radar altimeter, not GPS/GNSS to assess altitude.

Most if not all airliners equipped with autoland systems use ILS rather than GPS for position as well.

[coderjames → bb611]

Agreed, but only the big iron. I spent 8 years working for Universal Avionics, who develops precision WAAS-SBAS GPS flight management systems for GA / BizJets: http://uasc.com/home/nextgentechnologies/precisionaviationwi...