Liujing Shen, Haiping Mei, Yichong Ren, Junxin Zhang. Feasibility of Laser Shadow Method to Detect Two-Dimensional Wind Vector in Atmospheric Turbulence[J]. Chinese Journal of Lasers, 2021, 48(13): 1304004
- Chinese Journal of Lasers
- Vol. 48, Issue 13, 1304004 (2021)
Fig. 1. Principle of the integral pixel search algorithm
Fig. 2. Schematic diagram of simulating transverse wind with multilayer phase screens
Fig. 3. Dynamic phase screen obtained by simulation
Fig. 4. Position and moving direction of phase screens
Fig. 5. Relationship between the moving speed of the shadow and the transverse wind speed. (a) Moving direction of the phase screen is the same; (b) moving direction of the phase screen is different
Fig. 6. Influence of local transverse wind on the speed of shadow movement. (a) Relationship between the moving speed of shadow and the average transverse wind speed of path; (b) relationship between the moving speed of shadow and the position of local transverse wind
Fig. 7. Influence of sampling frequency on the calculation result of shadow movement speed. (a) Relationship between horizontal movement speed and wind speed at different sampling frequencies; (b) maximum wind speed that can be distinguished at different sampling frequencies
Fig. 8. Experiment scene
Fig. 9. Consecutive 3 frames of laser spot images
Fig. 10. Experimental results. (a) Relationship between the moving speed of shadow and the measured wind speed; (b) comparison between the fitted wind speed and the measured wind speed
Fig. 11. Displacement vector diagram of the shadow image
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