Characterizing animal anatomy and internal composition for electromagnetic modelling in radar entomology

Mirkovic, Djordje, Stepanian, Phillip M., Wainwright, Charlotte E., Reynolds, Don R., and Menz, Myles H.M. (2019) Characterizing animal anatomy and internal composition for electromagnetic modelling in radar entomology. Remote Sensing in Ecology and Conservation, 5 (2). pp. 169-179.

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Abstract

The use of radar as an observational tool in entomological studies has a long history, and ongoing advances in operational radar networks and radio-frequency technology hold promise for advances in applications such as aerial insect detection, identification and quantification. Realizing this potential requires increasingly sophisticated characterizations of radio-scattering signatures for a broad set of insect taxa, including variability in probing radar wavelength, polarization and aspect angle. Although this task has traditionally been approached through laboratory measurement of radar cross-sections, the effort required to create a comprehensive specimen-based library of scattering signatures would be prohibitive. As an alternative, we investigate the performance of electromagnetic modelling for creating such a database, focusing particularly on the influence of geometric and dielectric model properties on the accuracy of synthesized scattering signatures. We use a published database which includes geometric size measurements and laboratory-measured radar cross-sections for 194 insect specimens. The insect anatomy and body composition were emulated using six different models, and radar cross-sections of each model were obtained through electromagnetic modelling and compared with the original laboratory measurements. Of the models tested, the prolate ellipsoid with an internal dielectric of homogenized chitin and hemolymph mixture best replicates the measurements, providing an appropriate technique for further modelling efforts.

Item ID: 71342
Item Type: Article (Research - C1)
ISSN: 2056-3485
Keywords: Electromagnetic modelling, entomological radar, Insect RCS, insects, migration, radar cross-section, weather surveillance radar
Copyright Information: © 2018 The Authors. Remote Sensing in Ecology and Conservation published by John Wiley & Sons Ltd on behalf of Zoological Society of London. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Date Deposited: 28 Jun 2022 05:15
FoR Codes: 40 ENGINEERING > 4008 Electrical engineering > 400807 Engineering electromagnetics @ 80%
31 BIOLOGICAL SCIENCES > 3109 Zoology > 310913 Invertebrate biology @ 20%
SEO Codes: 18 ENVIRONMENTAL MANAGEMENT > 1806 Terrestrial systems and management > 180606 Terrestrial biodiversity @ 100%
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