Method of processing a signal from a coherent lidar to reduce noise and associated lidar system

摘要

The present invention is a method (80) for processing a signal from a coherent lidar including a coherent source (L), using a first detection assembly (D1) and a second detection assembly (D2), respectively. (100, 110) to generate a first beat signal (Sb1) and a second beat signal (Sb2); and, for a plurality of n time intervals (ti), the first and second beat signals. Determining 120 respective values of the spectral density (SPDi) using a transformation of the cross-correlation between into the frequency domain (120); and-using the n values of the spectral density (SPDi) Determining (130) an average value of density (SPD); and determining (140) location information about the object using the average value of the spectral density. I do.