Since 1967 Raytheon Company has been pursuing the design and development of CO2 laser radar systems. Coherent detection has been used in both continuous wave and pulsed systems which heterodyne infrared radiation backscattered from atmospheric aerosols. The instruments and techniques reported here have been used for velocity measurements of ground wind, aircraft trailing vortices, wind shear, clear air turbulence, and two-dimensional wind fields.
W. H. Keene,
C. E. Harris,
M. C. Krause,
"CO2 Laser Radar Systems", Proc. SPIE 0300, Physics and Technology of Coherent Infrared Radar I, (30 April 1982); doi: 10.1117/12.932576; https://doi.org/10.1117/12.932576