Investigation of atmospheric insect wing-beat frequencies and iridescence features using a multispectral kHz remote detection system

Alem K. Gebru; Erich G. Rohwer; Pieter Neethling; Mikkel S. Brydegaard

doi:10.1117/1.JRS.8.083503

18 December 2014 Investigation of atmospheric insect wing-beat frequencies and iridescence features using a multispectral kHz remote detection system

Alem K. Gebru, Erich G. Rohwer, Pieter Neethling, Mikkel S. Brydegaard

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 8, Issue 1, 083503 (December 2014). https://doi.org/10.1117/1.JRS.8.083503

Abstract

Quantitative investigation of insect activity in their natural habitat is a challenging task for entomologists. It is difficult to address questions such as flight direction, predation strength, and overall activities using the current techniques such as traps and sweep nets. A multispectral kHz remote detection system using sunlight as an illumination source is presented. We explore the possibilities of remote optical classification of insects based on their wing-beat frequencies and iridescence features. It is shown that the wing-beat frequency of the fast insect events can be resolved by implementing high-sampling frequency. The iridescence features generated from the change of color in two channels (visible and near-infrared) during wing-beat cycle are presented. We show that the shape of the wing-beat trajectory is different for different insects. The flight direction of an atmospheric insect is also determined using a silicon quadrant detector.

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Alem K. Gebru, Erich G. Rohwer, Pieter Neethling, and Mikkel S. Brydegaard "Investigation of atmospheric insect wing-beat frequencies and iridescence features using a multispectral kHz remote detection system," Journal of Applied Remote Sensing 8(1), 083503 (18 December 2014). https://doi.org/10.1117/1.JRS.8.083503

Published: 18 December 2014

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