Evaluation, Feasibility, and Design of a Three-Wavelength Infrared Atmospheric Aerosol Extinctiometer.
Final rept. 9 Jul 79-8 Jun 80,
H S S INC BEDFORD MASS
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This design study represents the first phase of an AFGL program to develop an instrument for measuring the infrared extinction coefficient of atmospheric aerosols. The performance objectives of the instrument require that the instrument operate in all environments, perform measurements in three wavelength regions 1, 3-5, and 8-12 micrometers, and cover a range defined by 50 kilometer visibility at one extreme and fog at the other extreme. The initial phase of the study was devoted to a review of all known techniques for determining the extinction coefficient of atmospheric aerosols. The review led to the selection of an extinctiometer concept as the best possible approach to achieve the AFGL objectives, given the present technological state-of-the-art in all alternative candidate techniques. Finally, a conceptual design and an engineering design specification were prepared, based on a unique extinctiometer measurement technique. Author
- Atmospheric Physics