There is such intense government interest in developing the capability to detect and identify chemical and biological (ChemBio) agents at a distance, that budgets have been exceeded, and budgets cut off in frustration, in vain attempts to fund such efforts. Standoff is the term used to designate distances exceeding 250 meters. Also of interest are agents at a proximate distance, those within the 250 meter range. Lasers, specifically those operating at the ~10 micron wavelength, are the key to this standoff detection capability. The two lasers used for most attempts to date are:
- Transversely Excited Atmospheric CO2, known as TEA CO2, and
- Ultraviolet Laser Induced Fluorescence, UV-LIF.
Both of these meet only a limited number of the ideal criteria of standoff sensing. A feature that a truly capable standoff ChemBio sensor must have is “active sensing”. Active sensing relies on an infrared source, a laser, to illuminate the agents to generate a reflection that can be analyzed. The alternative, which is easier to achieve, though much less effective, is “passive sensing”, which acquires signals from the blackbody radiation of the scene (land, sea, sky, or combination) at ambient temperature.
We specialise in laser development, for ChemBio Defense.
Avoiding harm by detecting ChemBio agents at proximate and standoff distances.
Download our CBRNe Convergence poster for more details.
A comparison of our laser technology to the alternatives illustrates why it brings a step change to this ChemBio detection field – Scalable, Active Standoff Sensing, Ranging, Identification & Mapping (SASSRIMTM). It meets all of the ideal criteria for active, standoff sensing, which include not only identification of the agent, but also gauging its extent and tracking its movement.
Ideal Criteria for an Active Standoff ChemBio Sensing System
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