Signal Averaging Limitations in Heterodyne- and Direct-Detection Laser Remote Sensing Measurements
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The use of laser remote sensing to determine the concentration of molecular species in the atmosphere by differential-absorption LIDAR (DIAL) requires the measurement of the average transmission of laser signals through the atmosphere at two or more different wavelengths. The accuracy with which the average transmission value, and hence the molecular concentration, may be determined is limited in many cases by the presence of large atmosphere-induced pulse-to-pulse fluctuations in the LIDAR returns.
KeywordsTemporal Correlation Average Transmission lIDAR Signal Heterodyne Detection Lidar Return
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