Definition of instantaneous frequency and frequency measurability

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1975 English Publisher:American Association of Physics Teachers (AAPT)Journal:American Journal of Physics, volume 43, pages 1,087-1,088 (issn: 0002-9505, eissn: 1943-2909,

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Authors: Madhu Sudan Gupta;

doi: 10.1119/1.9931

Definition of instantaneous frequency and frequency measurability

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Abstract

It is pointed out that the definitions of instantaneous and Fourier frequencies of a signal are noncausal and their measurement requires physically unrealizable systems. Some additional definitions of frequency are given that are causal.

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Massachusetts Institute of Technology
United States

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