SIMULATION IN THE TIME DOMAIN FOR HETERODYNE COHERENT LASER RADAR

摘要

A feuillete model for assessment of the performance of heterodyne coherent laser radar (HCLR) under nonstationary atmospheric conditions such as wind shear and a fine layering of scattering properties is proposed. The model is an end-to-end signal simulation in the time domain at intermediate frequency from beam propagations to signal processing. The model takes into account the full transverse dimension of the problem of laser-atmosphere interaction. The scatterers are grouped into slices, then an integration is performed over the slices that contribute to the HCLR signal. Two applications are presented: wind-shear detection for 10-mu m HCLR and wind-vortex detection for 2-mu m HCLR. [References: 27]