Abstract
Simultaneous measurements of atmospheric constituents and wind velocity in the boundary layer is of the utmost importance for environment and pollution monitoring. A CO2 lidar is well suited for such an application for there exist a large number of coincidences between CO2 laser lines and absorption spectra of species of interest. The molecules under study will provide the absorption features while the aerosols particles will scatter the incident light giving rise to a lidar signal. Regarding such an application, a heterodyne detection is efficient at 10 μm provided the number of speckles in a transverse plane on the receiver is small (about 4). Then, it provides with improved sensitivity with respect to direct detection at the same wavelength and Doppler frequency shift measurement.
© 1995 Optical Society of America
PDF ArticleMore Like This
R. Krawczyk, JB. Ghibaudo, JY. Labandibar, D. Willetts, M. Vaughan, G. Pearson, M. Harris, P. H. Flamant, P. Salamitou, A. Dabas, R. Charasse, T. Midavaine, M. Royer, and H. Heimel
MC3 Coherent Laser Radar (CLR) 1995
William B. Grant, Alan M. Brothers, and David M. Tratt
MB4 Laser and Optical Remote Sensing: Instrumentation and Techniques (LORS) 1987
C. Laurence Korb, Bruce M. Gentry, and S. Xingfu Li
TuA3 Optical Remote Sensing of the Atmosphere (ORS) 1995