Fig. 1. Rayleigh-Brillouin scattering spectrum distribution and transmittance distribution of scanning F-P interferometer

Fig. 2. Structural diagram of lidar system for air temperature detection

Fig. 3. Structural diagram of parameter calibration system of Fabry-Perot interferometer

Fig. 4. Output waveforms of F-P interferometer.（a）4.3 V；（b）5.0 V；（c）6.1 V；（d）10.0 V；（e）20.0 V

Fig. 5. Transmittance distributions of F-P interferometer. (a) Theoretical calculation results; (b) experimental test results

Fig. 6. 10 min temperature stability test

Fig. 7. Scanning transmittance distribution of interferometer at different temperatures

Fig. 8. Schematic diagram of temperature calibration system

Fig. 9. Rayleigh-Brillouin scattering spectra at constant pressure and different temperatures.（a）25 ℃；（b）30 ℃；（c）35 ℃；（d）40 ℃

Fig. 10. Deconvolution scattering spectrum distributions and Tenti S6 fitting spectra. (a) 25 ℃; (b) 30 ℃; (c) 35 ℃; (d) 40 ℃

Fig. 11. Relationship between retrieval temperature and preset temperature