Phase noise compensation in frequency modulated continuous wave (FMCW) measurement systems

Abstract

We present the analysis of the phase noise compensation algorithms used in Frequency Modulated Continuous Wave measurement systems taking into account all the design parameters. This allows obtaining a generic yet realistic framework for the FMCW-based systems ranging from RF to optical frequencies. The efficiency of the proposed phase-noise compensation algorithm has been verified by the way of simulations. The simulation results show a good agreement with the mathematical foundations discussed in the paper. This work could have a technological implication in many fields (e.g. SAR radar, optical fiber sensor interrogation) in such a way that the stringent and expensive hardware requirements due to nonlinear frequency modulation effects can be overcome a posteriori by the phase noise compensation algorithm demonstrated in this article.