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Two-channel direct-detection Doppler lidar employing a charge-coupled device as a detector

Two-channel direct-detection Doppler lidar employing a charge-coupled device as a detector

Applied Optics 41(6): 1145-1155

A direct-detection Doppler lidar system is demonstrated that uses a CCD as a detector for the first time to our knowledge. The ability to use this linear device with the circular output from a Fabry-Perot etalon comes from use of a circle-to-line converter [Appl. Opt. 29, 1482 (1990)]. In addition to the gains in quantum efficiency obtained through use of this detector, the lidar system described in this paper also has the capability to measure winds from aerosol and molecular backscatter simultaneously in two separate channels by directing the light reflected from one channel into the other. Early measurements with this system are presented; it is shown that, although accurate aerosol wind measurements are easily obtained, molecular measurements require a carefully calibrated inverse model and special hardware to derive accurate wind measurements with this channel.

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Accession: 047857516

Download citation: RISBibTeXText

PMID: 11900138

DOI: 10.1364/AO.41.001145

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