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- W4321087067 abstract "Abstract Development of beamforming methods for towed sonar multiplet line arrays is stimulated by their increased use in undersea surveillance. Such methods employ various forms of narrowband optimal beamforming to resolve port/starboard ambiguity present when the array is conventionally beamformed. In this paper, we depart from the purely narrowband approach and discuss methods for port/starboard ambiguity rejection (PSAR) using a broadband formulation. The proposed methodology relies on subband beamforming for which we use non-adaptive variants of beamspace Minimum Variance Distortionless Response (MVDR) and the Linear Constraint Minimum Variance (LCMV) beamformers. We provide detailed description and comparison of both subband methods and establish a connection between them. The paper provides assessment of PSAR properties of the developed broadband beamformers using outputs of signal processing of both simulated and experimental sonar data. Experimental data for this work were obtained through the participation in the Littoral Continuous Active Sonar (LCAS) trials." @default.
- W4321087067 created "2023-02-17" @default.
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- W4321087067 date "2023-02-16" @default.
- W4321087067 modified "2023-09-30" @default.
- W4321087067 title "Broadband beamforming of multiplet line arrays using subband optimal beamformers eliminating port/starboard ambiguity" @default.
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- W4321087067 doi "https://doi.org/10.1186/s13634-023-00981-9" @default.
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