Question

2. Exploring the two-ray propagation model (Problem 2-4): Consider Eq. 2.14 of the

   course reader

   d1−d0= (ht+hr) +d − (ht−hr) +d.

   Assume that Gr0 = Gr1 = 1, Gt0 = Gt1 = 1, and that R = −1, that is, the reflected ray under goes

   a phase inversion upon reflection. Derive an approximate expression for the distance values below the critical distance dc at which signal nulls occur.

Answer 1