Fig. 1. Fixed range-gate method processing wind lidar signal. (a) Time domain signal is divided with fixed range-gate; (b) Calculation result of wind speed

Fig. 2. Results of full cycle search. (a) Results of unimproved full cycle search algorithm; (b) Results of improved full cycle search algorithm

Fig. 3. Results of range-gate division. (a) Results of fixed range-gate division; (b) Results of adaptive range-gate division

Fig. 4. Curves of signal-to-noise ratio-average error

Fig. 5. Curve of number of full cycle-frequency error

Fig. 6. Curves of number of full cycle-range-gate length-frequency

Fig. 7. Schematic diagram of measurement experiment

Fig. 8. Target echo signal range-gate division. (a) Fixed range-gate dividing the turntable echo signal; (b) Adaptive range-gate dividing the turntable echo signal; (c) Fixed range-gate dividing the building echo signal; (d) Adaptive range-gate dividing the building echo signal

Fig. 9. Measurement error of turntable speed

Fig. 10. (a) Results of fixed range-gate division; (b) Results of adaptive range-gate division; (c) Comparison of wind speed measurement results