Multilayer Brightness Temperature Tracing Method for Rough Surface Scene Simulation in Passive Millimeter-Wave Imaging

Figure 17

Simulated image of brightness temperature of four different types of grass roughness, in which the correlation length of is 10λ; from (a) to (d), the RMS height of the rough surface is 1.8λ, 2.4λ, 3λ, and 4.5λ, respectively, which means that the roughness from (a) to (d) increases.

(a) ( = 1.8λ)

(b) ( = 2.4λ)

(c) ( = 3.0λ)

(d) ( = 4.5λ)