Challenges in noise removal from Doppler spectra acquired by a continuous-wave lidar

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This paper is focused on the required post processing of Doppler spectra, acquired from a continuous-wave coherent lidar at high sampling rates (400 Hz) and under rapid scanning of the laser beam. In particular, the necessary steps followed for extracting the wind speed from such Doppler spectra are presented. A method for determining the background noise spectrum without interrupting the
transmission of the laser beam is described. Moreover, the dependency between the determination of the threshold of a Doppler spectrum with low signal-to-noise ratios and the characteristics of the wind flow are investigated and a systematic approach for removing the noise is outlined. The suggested post processing procedures are applied to two sample time series acquired by a short-range WindScanner during one second each.
Original languageEnglish
Title of host publicationProceedings of the 26th International Laser Radar Conference : Session 5P: Atmospheric winds - turbulence
Number of pages4
Publication date2012
Article numberS5P-01
Publication statusPublished - 2012
Event26th International Laser Radar Conference - Porto Heli, Greece
Duration: 25 Jun 201229 Jun 2012


Conference26th International Laser Radar Conference
CityPorto Heli

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