Fluctuations in the progagation direction of scattered waves upon reflection from a layer containing random inhomogeneities

Measurement of the approach angles of radial waves by differential - phase systems is based on the use of a phase gradient along the propagation direction or, more precisely, a difference between the phases of the fields at two (or several) spatial points. In this connection it is interesting to treat the problem of finding the distribution function and statistical characteristics of an arbitrary phase of the field upon reflection from an inhomogeneous plasma layer (such as the i onosphere).