Fig. 1. Particle aggregation of soot. (a) Soot cluster model based on CCA simulation; (b) soot morphology under microscope

Fig. 2. Model for multiple scattering channel of soot

Fig. 3. Simulation results of scattering coefficients under different particle sizes

Fig. 4. Path losses of spherical soot particles under different concentrations

Fig. 5. Influence of communication distance on path loss under different particle concentrations. (a) Spherical particle LOS communication; (b) spherical particle NLOS communication

Fig. 6. Influence of communication distance on path loss under different particle radii. (a) Spherical particle LOS communication; (b) spherical particle NLOS communication

Fig. 7. Influence of communication distance on path loss under different soot concentrations. (a) Ellipsoidal particle LOS communication; (b) ellipsoidal particle NLOS communication

Fig. 8. Influence of communication distance on path loss under different particle radii. (a) LOS communication; (b) NLOS communication

Fig. 9. Scattering light intensity distributions under different soot concentrations