DOI: 10.1049/ell2.12935 ISSN:
Dynamic range extension for heterodyne fibre‐optic hydrophone by using instantaneous frequency‐tracking method
Sufan Yang, Chunxi Zhang, Xiaxiao Wang- Electrical and Electronic Engineering
Abstract
This letter proposes a novel dynamic range extension method using an instantaneous frequency (IF)‐tracking method for heterodyne fibre optic hydrophones (FOHs). IFs are used to compensate for large signal amplitudes in the demodulator. Theoretical analysis and simulation prove the effectiveness of the proposed algorithm. Simulation results achieve at least 19.76 dB dynamic range improvement, demonstrating great potential for extending FOHs for hydroacoustic detection and communication applications.