19 May 2006 Resolution study of wind parameter estimates by a coherent Doppler lidar system
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Abstract
A 2-μm wavelength coherent Doppler lidar system under development at NASA Langley Research Center in Virginia is discussed from the perspective of signal processing. The current data processing algorithm returns a variety of wind parameters such as power spectra, Doppler shift, wind speed, and wind direction. This paper compares the quality of selected wind parameter estimates by computing the power spectral density of stochastic lidar return data via the periodogram and the maximum likelihood power estimation method. The improvement in resolution of power spectra and Doppler shift estimates is witnessed by means of zero padding before the power spectral density was estimated in each range bin.
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Jeffrey Y. Beyon, Grady J. Koch, "Resolution study of wind parameter estimates by a coherent Doppler lidar system", Proc. SPIE 6214, Laser Radar Technology and Applications XI, 621403 (19 May 2006); doi: 10.1117/12.663416; https://doi.org/10.1117/12.663416
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