Numerical simulation and inversion validation of the real correlation random wind field generation for coherent Doppler LiDAR

Simulation of the coherent Doppler LiDAR signal requires accurate computation of homogeneous random wind fields. Based on complex random processes with specified spatial statistics given by the covariance function, an improved real correlation random wind field algorithm is proposed for real random processes, the simulation results are compared with the given covariance function and the real correlation algorithm conforms to the given covariance function quite well.     

On the choice of a regulator for the extraction of depth profiles from ARXPS data obtained on plasma-treated polystyrene

Regularized oxygen concentration depth profiles were extracted from ARXPS data obtained on a plasma-oxidized polystyrene sample, using a variety of regulators and over a wide range of values for the regularization parameter. The plausibility of the profiles obtained was assessed with respect to strong and weak criteria based on a priori considerations. It was found that the most plausible results were obtained with regulators based upon the slopes or the curvatures exhibited in the profile.