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This paper investigates the direction-of-arrival (DOA) estimation-based target localization problem using an array radar under complex multipath propagation scenarios. Prevalent methods may suffer from performance degradation due to the deterministic signal model mismatch, especially when the exact knowledge of a propagation environment is unavailable. To cope with this problem, we first establish an improved signal model of multipath propagation for low-angle target localization scenarios,doi:10.3390/rs14133099 doaj:d9d3d9cade31402980b18380f30d87da fatcat:ard5ujktlngcpcacow2ral2fy4