Simultaneous Echo Power and Doppler Frequency Measurement System Based on Microwave Photonics Technology

A Doppler shift measurement system based on four-wave mixing effect in a highly nonlinear fiber is demonstrated practically. The system exhibits two low-frequency voltages, which are functions of the Doppler shift, and therefore, low-cost low-frequency photodetectors can be employed in the system. N...

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Bibliographic Details
Published inIEEE transactions on instrumentation and measurement Vol. 66; no. 3; pp. 508 - 513
Main Authors Emami, Hossein, Hajihashemi, Mohammadreza, Alavi, Sayed Ehsan, Ghanbarisabagh, Mohammad
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Carrier frequencies
Doppler effect
Doppler measurement
Doppler radar
Doppler shift
Four-wave mixing
Frequency hopping
Frequency measurement
Frequency modulation
Microwave photonics
microwave photonics (MWP)
Optical mixing
Photonics
radar
Radar echoes
sensitivity
wideband
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Summary:A Doppler shift measurement system based on four-wave mixing effect in a highly nonlinear fiber is demonstrated practically. The system exhibits two low-frequency voltages, which are functions of the Doppler shift, and therefore, low-cost low-frequency photodetectors can be employed in the system. No sophisticated electrical instrument is required to perform the measurement. The scheme is able to simultaneously and independently measure the Doppler frequency of a radar echo and its power level with carrier frequency up to 40 GHz. The system is suitable to be employed in any microwave photonics (MWP) radar system with broad frequency agility characteristics or the other MWP systems operating based on frequency hopping technique.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2016.2639758