An experimental investigation of the optimal filter as an area function perdictor

In order to test the accuracy of the optimal filter as an area function predictor, the technique is applied to data derived from stepped cylindrical cavities of known dimension. The impulse response of the cavities is measured and an optimal filter is derived from the data. The area function derived from the optimal filter is then compared to the actual cavity area function. In addition, an optimal filter is derived from the theoretically calculated cavity response and the area function derived from this filter is compared to the original cavity area function. Results are presented for several different cavity configurations.