Cramér-Rao Bound Study of Multiple Scattering Effects in Target Separation Estimation

Figure 2

CRB(𝑑) as the observation angle 𝛽 varies, normalized by (𝑑𝜎)², for target separations 𝑑=𝜆/4 and 𝑑=𝜆/2. The incidence angle is 𝛼=0 and the scatterer strengths are 𝜏₁=1=𝜏₂.

(a) 𝑑=𝜆/4

(b) 𝑑=𝜆/2