IIBR research projects incorporate modeling and measurement of electromagnetic interactions with atmospheric constituents. The influence of gases and aerosols on radiation from UV to the MMW is assessed by commercial computer codes such as MODTRAN and HITRAN as well as models developed at IIBR.
Innovative in-house techniques for light scattering evaluation from non-regular shapes and structures enable computation of concentration and particle size of atmospheric pollutants from spectral measurements.
Another topic studied is the effect of aerosols on radiation transfer in the atmosphere. Various smoke chambers and computerized image analyses are used to characterize the size and geometry of droplets and particles.
IIBR's advanced electro-optical systems for detection, identification and temporal and spatial mapping of aerosols and gaseous pollutants involve active and passive technologies, allowing a wide range of measurements, from in situ observation to remote sensing at distances of up to several kilometers:
- LIDAR (YAG, CO2) for rapid spectral and detailed spatial monitoring
- Radiometers and portable FTIR to cover the spectral range of most hazardous gases
- Hyper and multispectral imaging for detection and tracking of gaseous pollutants
- High spectral resolution measurements in the THz domain (e.g., concealed weapon material analysis)
- Novel algorithms to enable mapping for the above techniques
IIBR's unique capabilities excel in the integration of these systems with lab and field samplers/analyzers for aerosols and gases, used to evaluate the performance and operating mode of the electro-optical systems in realistic scenarios.
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Activities Include:
- Computerized particle analysis
- Sampling and analysis of gaseous and particulate pollutants
- Investigation of obscurants' effects on electrooptical devices
- Feasibility studies of remote sensing systems in various scenarios
- Integration and evaluation of remote sensing systems for monitoring of air pollutants
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