Fig. A.1.
Schematic of the signal projection and the definitions used in Appendix A. POS and LOS denote the POS and the LOS direction. r is the projected distance from the cluster centre, r′ the 3D spherical distance from cluster centre, and l the distance in the direction of LOS from the cluster centre. Given these definitions, we can write r′2 = r2 + l2.
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