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Data processing error analysis based on Doppler asymmetric spatial heterodyne measurement

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Abstract

The Doppler asymmetric spatial heterodyne (DASH) interferometer provides the capability to retrieve wind speed in the upper atmosphere. The data processing leads to a significant retrieving error with the development of wind precision. The influence of window parameters on the isolated interferogram is analyzed theoretically. Based on the derivation, the system is established, and the interferogram with a small shift is sampled. The phase and wind speed are calculated under various window types and window width values. We conclude that, by choosing the Nuttall window with a small width, the wind retrieving error can be minimized.

© 2017 Optical Society of America

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