Open AccessNoise sensitivity of a bio-inspired echolocation model
Author(s) -
Krasin Georgiev,
Radiikolova
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/664/1/012007
Subject(s) - human echolocation , baseband , spectrogram , sensitivity (control systems) , gaussian noise , noise (video) , acoustics , computer science , filter (signal processing) , signal (programming language) , matched filter , speech recognition , algorithm , physics , telecommunications , artificial intelligence , electronic engineering , computer vision , engineering , bandwidth (computing) , image (mathematics) , programming language
The Spectrogram Correlation And Transformation (SCAT) receiver is often cited as a model of bat auditory system that is responsible for echolocation signal processing and super resolution in range. We explore the response of a simplified baseband version of SCAT (BSCT) for two targets in white Gaussian noise. Knowing the loss of signal-to-noise ratio (SNR) relative to the matched filter (MF) is important for any practical applications of the algorithm. We show that this loss is 6~dB and increases if a critical noise level is surpassed.