572923.fig.008a
(a) ,
572923.fig.008b
(b) ,
Figure 8: as the scatterer separation varies, normalized by . The Fisher information on which the bound is based is averaged over all combinations of 100 samples each of incidence angles and observation angles taken at regular intervals. Two variations are shown: (a) equal ( ) and (b) unequal ( ) scatterer strengths.