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Five possible trajectory profiles: (A) constant −2.5°; (B) straight increasing from −4 to 1°; (C) straight decreasing from −1 to −6°; (D) from −6 to −2.5 and back to −6 again; and (E) from 1 to −2.5 and back to 1. Modified from Asín-Prieto et al. (2019), copyright 2019, IEEE.
