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Title: Development of a high frequency ambient noise data acquisition system
Keywords: "High frequency", "Snapping shrimp", "Spatial and temporal", "Acoustic", "TDOA", "Ambient noise"
Issue Date: 17-Sep-2004
Citation: KOAY TEONG BENG (2004-09-17). Development of a high frequency ambient noise data acquisition system. ScholarBank@NUS Repository.
Abstract: High frequency ambient noise has a significant impact on the operation of many Sonars and related systems. Therefore, understanding the temporal and spatial distributions of this noise in shallow water is crucial. Existing high-bandwidth acoustic data acquisition systems are large and complex. This project has developed a novel stand-alone, portable, and compact cylindrical package (23cm i?? by 60cm length) that can be rapidly and flexibly deployed in various configurations. It has 4 simultaneous sampling analog channels (up to 5MSa/s aggregate) and is capable of beamforming in 3D space using a tetrahedral array configuration. This system has provided both time-space distributions and directivity of high frequency ambient noise in Singapore waters for the first time.
Appears in Collections:Master's Theses (Open)

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