Question

Which of the following is supplemented with GPS to provide non-precision and Category I approaches?

(a) Primary radar

(b) WAAS

(c) ILS

(d) MLS

This question was addressed to me by my college professor while I was bunking the class.

The doubt is from Satellite Landing System topic in division Landing Systems & Air-Traffic Management of Avionics

Answer 1

The correct option is (b) WAAS

To explain I would say: For non-precision and Category I precision approaches, the limitations by the GPS is mitigated by the FAA’s Wide Area Augmentation System. It may be supplemented with local differential GPS stations located near runways.