Intensity-modulated linear-frequency-modulated continuous-wave lidar for distributed media: fundamentals of technique.
We analyze the intensity-modulation frequency-modulated continuous-wave (FMCW) technique for lidar remote sensing in the context of its application to distributed media. The goal of the technique is the reproduction of the sounded-medium profile along the emission path. A conceptual analysis is carried out to show the problems the basic version of the method presents for this application. The principal point is the appearance of a bandpass filtering effect, which seems to hinder its use in this context. A modified version of the technique is proposed to overcome this problem. A number of computer simulations confirm the ability of the modified FMCW technique to sound distributed media.
Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, Campus Nord, D-3, Sor Eulàlia d'Anzizu s.n. E-08034 Barcelona, Spain. oscar.batet@tsc.upc.edu
Oscar
O
Batet
Federico
F
Dios
Adolfo
A
Comeron
Ravil
R
Agishev