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Selected Works

Selected Works

2011

Faraday Filter

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Full-Text Articles in Aerospace Engineering

Proportional-Integral-Derivative (Pid) Temperature Control & Data Acquisition System For Faraday Filter Based Sodium Spectrometer, Vardan Semerjyan, Tao Yuan Dec 2010

Proportional-Integral-Derivative (Pid) Temperature Control & Data Acquisition System For Faraday Filter Based Sodium Spectrometer, Vardan Semerjyan, Tao Yuan

Vardan Semerjyan

Sodium (Na) Faraday filters based spectrometer is a relatively new instrument to study sodium nightglow [Harrell et al., 2010] as well as atmospheric chemistry in the mesopause region. Successful spectrometer measurement demands highly accurate control of filter temperature. The ideal operation site for this Na spectrometer would be an isolated location with minimum nocturnal sky background. Thus, the remote and automatic control of the filter temperature is a requirement for such operation, whereas current temperature controllers can only be adjusted manually by the operator. The proposed approach is aimed not only to enhance the accuracy of the temperature control but …