Fig. 1. Lidar echo signal of the ground-based Mie lidar

Fig. 2. Frequency characteristics of the ground-based Mie lidar echo signal

Fig. 3. Wavelet decomposition coefficient of Mie lidar echo signal. (a)(b) Low-frequency coefficients and high-frequency coefficients of the first level decomposition; (c)(d) low-frequency coefficients and high-frequency coefficients of the second level decomposition; (e)(f) low-frequency coefficients and high-frequency coefficients of the third level decomposition

Fig. 4. Reconstructed lidar signal with the threshold processed wavelet decomposition coefficient

Fig. 5. Simulation flow for reconstructing lidar echo signal based on CS

Fig. 6. Reconstructed signal and original signal in one experiment

Fig. 7. Comparison of original signal with reconstructed signals of different SNRs. (a) Original signal; (b) 35 dB; (c) 30 dB; (d) 25 dB; (e) 20 dB; (f) 15 dB; (g) 10 dB

Fig. 8. Reconstruction effect when the SNR of input signal is different. (a) SNR of input signal; (b) increment of SNR; (c) C; (d) RMSE

Fig. 9. Processing effect of OMP algorithm on Gaussian white noise. (a) Input noise; (b) noise processed by OMP algorithm

Fig. 10. Comparison of standard atmosphere model and retrieved extinction coefficient from reconstructed signal. (a) Extinction coefficient of aerosols in standard atmosphere model; (b) extinction coefficient of reconstructed echo signal inversion under 30 dB SNR conditions

Fig. 11. Errors of retrieved extinction coefficient. (a) Absolute error; (b) relative error