Robust DFT‐based generalised likelihood ratio test for underwater tone detection

• DOI: 10.1049/iet-rsn.2017.0135
• Publication Date: 2017-08-26T02:16:38Z
• Authors: Yi‐lin Wang; Shi‐long Ma; Zhan Fan; Guo‐Long Liang; Qing Li
• Keywords: Tone (literature); Detection theory; SIGNAL (programming language)

The discrete Fourier transform (DFT) of observation sequence is usually used in the detection tonal signal. A tone without any prior information cannot be guaranteed to lie exactly on DFT frequency bin, which will degrade performance detector based DFT. In this work, authors study problem for a deviated from bin. generalised likelihood ratio utilising adjacent bins designed. Theoretical analysis, computer simulations, and lake experiment show that proposed robust against deviation more suitable practical circumstances.