Single solid F-P etalon-based dual-frequency Doppler lidar

The single solid Fabry-Perot (FP) etalon-based dual-frequency Doppler lidar technology was proposed. Its structure is introduced, and the principle of wind field measurement with that Doppler lidar system is analyzed. According to the detection requirements, each unit of system parameters, especially the F-P etalon parameters are carefully optimized. Furthermore, the detection performance of the lidar system with optimized parameters is simulated. The simulation results show that the radial velocity errors is less than 0.75 m/s at 3 km altitude on sunny days and less than 0.58 m/s at 1.5 km altitude on hazy days for 60 elevation angle, 60 m range resolution and 1min temporal resolution, and is less than 1m/s at 4 km range under different visibility conditions for 8 elevation angle, 60 m range resolution and 10 s temporal resolution with a 100 mm diameter telescope and a 50 J pulse energy, 6 kHz repetition rate semiconductor laser.