Fizeau wind lidar and wind inversion algorithms

Wind lidar based on Fizeau interferometer is developed, two wind inversion algorithms are presented as well. The two wind inversion algorithms are analyzed respectively, the results show: when the wind is slow, the two algorithms have the same precision, but Gaussian fitting method has faster convergence and less effect from signal noise ratio of the fringe than maximum likelihood method; when the wind is fast, the Gaussian fitting method will cause large wind error because part of the fringe doesn’t illuminate the detector, the maximum likelihood method is preferred in this case. Hence the two algorithms are used to invert the wind speed respectively according to the estimated wind speed. Using the lidar system and the wind inversion algorithms, wind speed profile at altitudes below 1.5