Fig. 1. Raman backscatter spectra of nitrogen and water vapor molecules (at a laser wavelength of 355 nm and a temperature of 300 K)

Fig. 2. Schematic diagram of temperature and humidity Raman lidar

Fig. 3. Raman lidar emission spectra

Fig. 4. Simulated profiles of atmospheric temperature (a), humidity (b), relative humidity (c), and extinction coefficient (d)

Fig. 5. Analog signals from four channels of Raman lidar

Fig. 6. Fitted curve inverted by simulation Raman lidar. (a) Fitted curve of temperature; (b) fitted curve of humidity

Fig. 7. Matching of simulated data with measured data about temperature

Fig. 8. Matching of simulated data with measured data about relative humidity

Fig. 9. Maximum detection height of simulated and measured data. (a) Maximum detection height of temperature;(b) maximum detection height of relative humidity

Fig. 10. Data validity rate of simulation and measured data. (a) Data validity rate of temperature;(b) data validity rate of relative humidity

Fig. 11. The backscatter cross-sections with the excitation light of 355 nm and 532 nm

Fig. 12. Temperature sensitivity about different center wavelengths of color filters

Fig. 13. Humidity sensitivity about different center wavelengths of color filters