A.A. Emelyanov – Design Engineer of the 2nd category, JSC «Kaluga Scientific Research Radio Engineering Institute»
High-accuracy measurement of RF source coordinates is one of fundamental requirements to modern digital RF interferometers in aircraft systems of radio monitoring, in which one of the basic measured parameters is phase difference of signals received and digitized by distributed reception channels. Accordingly, minimization of errors in digitization of signals received by such channels is one of basic requirements to radio frequency interferometers.
The objective of this work is to minimize phase-difference errors in digitization of received signals by analog-digital converters (ADC) of distributed channels of an RF interferometer by using fiber-optic communication lines (FOCL) in the ADC clock frequency distribution system.
The special feature of the suggested system of phase synchronization of all ADSc and signal processors of the radio frequency inter-ferometer is utilization of a single high-stable source of clock signals that are distributed among all ADCs through single-mode fiber-optic communication lines (FOCL) of equal electrical length; the clock frequency signals of the ADCs in field programmable logic devices (FPLD) of signal processing are transmitted through a single fiber optic on different-frequency optical carriers.
- Belkin M.E. Komponenty' volokonno-opticheskix sistem: Ucheb. posobie. M.: MIRE'A. 2010. 112 s.
- Belkin M.E. Analogovy'e volokonno-opticheskie sistemy' // LAMBERT Academic Publishing. 2011. 636 s. ISBN-13: 978-3-8465-2155 7.
- Gooch & Housego «Gooch & Housego Data Sheet: AA0701 SERIES: high bandwidth DFB lasers». Data sheet ref: DS-7038 / Revision № 05, 2016. http://goochandhousego.com/products-categories/high-speed-detectors.
- Gooch & Housego «Gooch & Housego Data Sheet: EM169: Optical Receivers for RF over Fiber Applications». Data sheet ref: DS-7038 / Revision № 04, 2015. http://goochandhousego.com/products-categories/Lasers.
- Huber+Suhner AG «Huber+Suhner Data Sheet: Coaxial Cable: SUCOFORM_86_FEP». Document DOC-0000177910 AN/PDO N. Data of publication 11.05.017.
- Emel'yanov A.A. i dr. Osobennosti postroeniya bortovoj volokonno-opticheskoj sinxroseti // Radiotexnika. 2017. № 8. S. 121−126.
- Corning, Inc. Corning SMF-28e+ Optical Fiber Product Information. http://www.corning.com/opticalfiber/products/SMF-28e+_fiber.aspx (2011).