Spectral Errors from Single-Mode Analog Filters in Processing Geoscientific Data

The use of a single-mode filter for obtaining spectral estimates with an analog computer is discussed. The equivalent bandpass filter that results may have some undesirable selectivity characteristics. Examples are given and suggestions made on ways of avoiding these errors. Some applications of this type of data analysis are given by Jones and Pasquill [1] and Businger et al. [2].