multipath reflection fresnel zone

[kleinesmurf69]

Hello,

In **broken link removed**
at pp.49-53 the author talks about fresnel zones. Especially the fresnel zone due to reflections interest me. The author gives 2 equations 2.24 and 2.25 which are a bit foggy to me. These equations quantify the radius and the semi-major axis of the first fresnel zone on a reflective surface. The problem is the exact definition of these quantities with respect to figure 2.52.

Thanks.
Best regards.

 

[jallem]

The equation 2.24 is the radius of the FIRST fresnel zone. In the
fig. 2.52 is the dark circle marked with n=1(where the point
M is). In other words, is the distance from the center of
the circle to the point M.