The stationary phase theorem announces the following result Bleistein (1984):

Integrals of the form

(12) |

(13) |

The method is based on a high-frequency approximation, the general idea being that the integral has most of its area near the stationary point *t _{0}*. The approximate value of the integral in the neighborhood of the stationary point is then obtained analytically by expanding and

4/20/1999