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PLoS Computational Biology Issue Image | Vol. 15(12) January 2020

PLoS Computational Biology Issue Image | Vol. 15(12) January 2020

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Modulating narrow-band signals maximizes detection probability of insect-swarms by bats

Most bio-sonar studies have focused on the reception of single target-echoes by echolocating bats. However, under natural conditions insect-targets often occur in swarms. Boonman et al. constructed life-like avatars of mosquitoes and placed them in constellations following natural statistics representing different densities and group sizes. Using a virtual acoustic paradigm they calculated the echoes received for 100 realizations of the swarm. To assess the contribution of insect-shape, they compared the responses to echoes of virtual clouds of point-targets. The authors found that, especially for dense clouds, modulating the emitted narrowband-signal by several kHz greatly enhances detection probability.

Image Credit: Mor Taub, Tel Aviv University.

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Modulating narrow-band signals maximizes detection probability of insect-swarms by bats

Most bio-sonar studies have focused on the reception of single target-echoes by echolocating bats. However, under natural conditions insect-targets often occur in swarms. Boonman et al. constructed life-like avatars of mosquitoes and placed them in constellations following natural statistics representing different densities and group sizes. Using a virtual acoustic paradigm they calculated the echoes received for 100 realizations of the swarm. To assess the contribution of insect-shape, they compared the responses to echoes of virtual clouds of point-targets. The authors found that, especially for dense clouds, modulating the emitted narrowband-signal by several kHz greatly enhances detection probability.

Image Credit: Mor Taub, Tel Aviv University.

https://doi.org/10.1371/image.pcbi.v15.i12.g001