Comments on "The application of prolate spheroidal wave functions to the detection and estimation of band-limited signals"

On prolate spheroidal wave functions for signal processing

“…This technique has been applied to various problems in geophysics, analysis of atmospheric and oceanic data, as well as paleoclimate data (here we give only a few relevant references: see 13–19). It is practically impossible to refer to all possible fields of ψ l ( c , x ) applications in a short survey like this, except just mention broadband source localization, array signal processing, multilevel multidimensional signal modulation for a high‐speed modem, etc., 20–26.…”