18 December 2014 Investigation of atmospheric insect wing-beat frequencies and iridescence features using a multispectral kHz remote detection system
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Alem K. Gebru, Alem K. Gebru, Erich G. Rohwer, Erich G. Rohwer, Pieter Neethling, Pieter Neethling, Mikkel S. Brydegaard, 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 . Submission:
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