About this document
Excitation Signal and Windowing Functions by Harsh Khot is a document available to read on EtoBox.
Guided waves are dispersive, meaning their wave speed varies with frequency. When a signal with multiple frequencies propagates long distances, the different frequencies will spread out over time, distorting the signal. To reduce dispersion, the input signal should have a limited bandwidth. A pure tone burst results in a main lobe and unwanted side lobes. Windowing functions can be applied to a carrier signal to reduce side lobes, removing unwanted frequencies. Common windowing functions include Hanning, Ga
- Author
- Harsh Khot
- Language
- EN