Radar Imaging 10 - Method of Stationary Phase for Fourier Transform of Radar Green's Function

In this video I present the stationary phase approximation theorem and apply it to two examples that occur in radar imaging problems. Namely, to compute the 2-D Fourier Transform of the one-way and two-way Green's functions. No proof of the theorem is given (see Ref 2 below for a proof).
Here are some useful references:
1) Notes: adityamuppala....
2) Book: Papoulis, Athanasios. "Systems and transforms with applications in optics." McGraw-Hill Series in System Science (1968).