Question

Which of the following is not true with respect to WAAS?

(a) Provides WADGPS corrections

(b) Uses ground integrity broadcast

(c) Provide precision approaches for Category III C

(d) Provide GPS ranging function

This question was posed to me in semester exam.

This interesting question is from Satellite Landing System topic in portion Landing Systems & Air-Traffic Management of Avionics

Answer 1

Correct choice is (c) Provide precision approaches for Category III C

The explanation is: WAAS addresses the limitations by providing Wide area differential GPS error correction, a ground integrity broadcast, and a GPS ranging function from three or four geostationary satellites providing additional availability.