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Definition of instantaneous frequency and frequency measurability

 

作者: Madhu Sudan Gupta,  

 

期刊: American Journal of Physics  （AIP Available online 1975）
卷期: Volume 43, issue 12  

页码: 1087-1088

 

ISSN:0002-9505

 

年代: 1975

 

DOI:10.1119/1.9931

 

出版商: American Association of Physics Teachers

 

数据来源: AIP

 

摘要:

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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