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Distinguishing Between Positive and Negative Difference Frequencies

 

作者: Philip A. Ekstrom,  

 

期刊: Review of Scientific Instruments  （AIP Available online 1966）
卷期: Volume 37, issue 9  

页码: 1244-1245

 

ISSN:0034-6748

 

年代: 1966

 

DOI:10.1063/1.1720467

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A modified heterodyne technique is suggested which produces one of two readily distinguishable outputs depending upon which input frequency is higher. Application is made to a direct reading angular position indicator based upon a laser rotation sensor.

 

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