Yinying Li, Xiangcheng Chen, Cuirong Yu, Guangyao Dai, Songhua Wu. Simulation and Error Analysis of Coherent Differential Absorption Carbon Dioxide Lidar[J]. Acta Optica Sinica, 2024, 44(6): 0601012
- Acta Optica Sinica
- Vol. 44, Issue 6, 0601012 (2024)
Fig. 1. Structural design drawing of CDIAL system
Fig. 2. Flow chart of simulation of echo signal by CDIAL
Fig. 3. Simulation results of echo signal. (a) Aerosol backscattering coefficient; (b) standard atmospheric model; (c) CO2 volume fraction profile; (d) simulated echo signal
Fig. 4. Variation of DAOD with drift of
Fig. 5. Variation of CO2 molecular absorption cross section with wavelength
Fig. 6. RSE introduced by wavelength shift in DAOD at different altitudes
Fig. 7. Variation of DAOD with increasing temperature offset at different heights
Fig. 8. CO2 molecular absorption cross section difference
Fig. 9. RSE of DAOD at different altitudes induced by temperature bias
Fig. 10. Variation of DAOD with increasing pressure offset at different heights
Fig. 11. RSE of DAOD at different altitudes induced by pressure bias
Fig. 12. SNR of echo output varies with height under different aerosol conditions
Fig. 13. Random error of CO2 volume fraction varies with height under different aerosol conditions
Fig. 14. RSE of volume fraction inversion caused by wavelength drift
Fig. 15. RSE of volume fraction inversion caused by temperature uncertainty
Fig. 16. RSE of CO2 molecular number density caused by temperature uncertainty
Fig. 17. RSE of volume fraction inversion caused by pressure uncertainty
Fig. 18. RSE of CO2 molecular number density caused by pressure uncertainty
Fig. 19. RSE of CO2 volume fraction caused by measurement deviation of water vapor volume mixing ratio
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Table 1. Parameters of CDIAL system
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Table 2. Simulation parameters of echo signal
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Table 3. Parameters of balance detector system
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Table 4. Total error of system
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