Passive kHz lidar for the quantification of insect activity and dispersal

Research output: Contribution to journalArticle

Abstract

Background: In recent years, our group has developed electro-optical remote sensing methods for the monitoring and classification of aerofauna. These methods include active lidar methods and passive, so-called dark-field methods that measure scattered sunlight. In comparison with satellite- and airborne remote sensing, our methods offer a spatiotemporal resolution several orders of magnitude higher, and unlike radar, they can be employed close to ground. Whereas passive methods are desirable due to lower power consumption and ease of use, they have until now lacked ranging capabilities. Results: In this work, we demonstrate how passive ranging of sparse insects transiting the probe volume can be achieved with quadrant sensors. Insects are simulated in a raytracing model of the probe volume, and a ranging equation is devised based on the simulations. The ranging equation is implemented and validated with field data, and system parameters that vary with range are investigated. A model for estimating insect flight headings with modulation spectroscopy is implemented and tested with inconclusive results. Insect fluxes are retrieved through time-lag correlation of quadrant detector segments, showing that insects flew more with than against the wind during the study period. Conclusions: The presented method demonstrates how ranging can be achieved with quadrant sensors, and how it can be implemented with or without active illumination. A number of insect flight parameters can be extracted from the data produced by the sensor and correlated with complementary information about weather and topography. The approach has the potential to become a widespread and simple tool for monitoring abundances and fluxes of pests and disease vectors in the atmosphere.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
  • Zoology

Keywords

  • Aerofauna, Dark field, Lidar, Modulation spectroscopy, Near-field optics, Remote sensing
Original languageEnglish
Article number6
JournalAnimal Biotelemetry
Volume6
Issue number1
Publication statusPublished - 2018 May 30
Publication categoryResearch
Peer-reviewedYes

Related projects

Niklas Larsson, Atticus Pinzon-Rodriguez, Arne Hegemann, Brianne Addison, Charlie Cornwallis, Giuseppe Bianco, INGRID SASSENHAGEN, Jerker Vinterstare, Julian Melgar, Julio Neto, Lasse Jakobsen, Mikael Ekvall, Mihaela Ilieva, Natalia Annenkova, Pallavi Chauhan, Sylvie Tesson, Yannis Vardanis, Catherine Tayleur, Emily Baird, Olle Lind, Jakob Löndahl, Tina Santl-Temkiv, Anders Hedenström, Åke Lindström, Anders Nilsson, Bengt Hansson, Dennis Hasselquist, Erik Svensson, Henrik Smith, Helena Westerdahl, Jan-Åke Nilsson, Johan Bäckman, Katarina Hedlund, Lars Råberg, Maria Ingimarsdottir, Martin Green, Maria Sandell, Martin Stjernman, Nils Kjellén, Ola Olsson, Rachel Muheim, Richard Ottvall, Staffan Bensch, Xiuhong Yang, Sara Snogerup-Linse, Heiner Linke, Mikkel Brydegaard Sorensen, Patrik Lundin, Sune Svanberg, Zuguang Guan, Ann-Sofie Albrekt, Anders Hargeby, Anders Persson, Christer Brönmark, Emma Kritzberg, Karin Rengefors, Lars-Anders Hansson, Olof Berglund, Wilhelm Granéli, Alice Nicolle, Ben Chapman, Christian Skov, Johan Ahlgren, Jakob Brodersen, Jessica von Einem, Kaj Hulthén, Kelly Gutseit, Karen Lebret, Lynn Ranåker, MATTIAS EKVALL, Mercy Lard, MIKAEL JÖNSSON, PER HALLGREN, Peter Ljungberg, Samuel Hylander, Tony Fagerberg, Therese Jephson, Tomas Johansson, Bjorn Canback, Bengt Danielsson, Christoffer Johansson, Emma Ådahl, Florian Muijres, Jörgen Ripa, Melissa Bowlin, Niclas Jonzén, Per Henningsson, Roger Härdling, Andreas Nord, Arzu Gursoy, Asghar Muhammad, Anna Nilsson, Anna Runemark, Barbara Tschirren, Cecilia Nilsson, Håkan Karlsson, Irene Pala, Juliana Dänhardt, Johan Nilsson, Jens Rydell, Jonas Waldenström, Keith Larson, Kristina Karlsson, Kristin Scherman, Mikael Åkesson, Martin Andersson, Maja Tarka, Maren Wellenreuther, Max Lundberg, Miriam Liedvogel, Maj Rundlöf, Martin Wintersparv Stervander, Machteld Verzijden, Olof Hellgren, Raymond Klaassen, Roine Strandberg, Susanne Åkesson, SANDRA SKÖLD CHIRIAC, Sophia Engel, Sissel Sjöberg, Sara Naurin, Thomas Alerstam, Tom J Evans, Torbjörn von Schantz, Ulf Ottosson, Marie Dacke & Helena Osvath

2008/06/012018/12/31

Project: ResearchInterdisciplinary research

View all (1)