Improved sensitivity RF photonics doppler frequency measurement system

• Main Authors: Emami, H., Hajihashemi, M., Alavi, S. E.
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers Inc. 2016
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/72044/1/SayedEhsanAlavi2016_ImprovedSensitivityRFPhotonicsDoppler.pdf; http://eprints.utm.my/id/eprint/72044/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990831598&doi=10.1109%2fJPHOT.2016.2598787&partnerID=40&md5=3229410a553b7b38f26026e06879daa4
• Institution: Universiti Teknologi Malaysia

An improved sensitivity Doppler frequency measurement system based on microwave photonics technology was demonstrated practically. The system employs a four-wave mixing effect to achieve broad radio-frequency (RF) frequency measurement. In addition, a lock-in amplification technique was utilized to achieve high-measurement sensitivity. The system is, thus, capable of Doppler frequency estimation of radar echoes with a carrier frequency up to 40 GHz and a power level as low as $-$35 dBm. © 2009-2012 IEEE.