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Mikkel Brydegaard1, Aboma Merdasa2, Alem Gebru3

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Summary

A new low-cost optical platform uses telescopes and lasers for environmental remote sensing. It monitors vegetation, water quality, and identifies insects for ecological studies.

Keywords:
Environmental monitoringFluorescenceInstrumentationLidarLuminescenceModulationRamanRemote sensingSpectroscopyStand-off detection

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Area of Science:

  • Environmental Science
  • Optical Engineering
  • Ecology

Background:

  • Remote sensing is crucial for environmental monitoring.
  • Existing technologies can be costly and complex.
  • There is a need for versatile, accessible sensing platforms.

Purpose of the Study:

  • To develop a novel, versatile optical platform for environmental remote sensing.
  • To demonstrate its application in vegetation assessment, water quality monitoring, and insect identification.
  • To create a low-cost system suitable for research in developing countries.

Main Methods:

  • Utilized two amateur astronomy telescopes.
  • Employed continuous-wave diode lasers (violet to near-infrared).
  • Integrated quadrant photodiodes, CCD cameras, and a digital spectrometer.

Main Results:

  • Successfully monitored water quality using Raman-laser-induced fluorescence at 120m.
  • Achieved insect identification at kilometer ranges via wing beat frequency analysis.
  • Demonstrated platform's adaptability for diverse ecological and environmental parameters.

Conclusions:

  • The developed optical platform is a versatile and cost-effective solution for remote sensing.
  • Its low cost and adaptability make it ideal for advanced research, particularly in developing nations.
  • The platform has been successfully disseminated through workshops and adopted by African universities.