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Beamforming is a powerful processing tool for direction-of-arrival (DOA) estimation. The performance of a beamformer is limited by physical characteristics of the array in use, and searching space is often crowded in the form expressed in Euclid space. When the input space is transformed into a feature space with high dimension, e.g. infinite dimension in Hilbert space, it exhibits highly sparse characteristics...
Array signal processing technology is very important in various underwater acoustic applications. With the development of sonar sensor and array technology, it has been a popular topic in recent years. The beamforming technology is an important technique in underwater acoustic array signal processing. Several beamforming algorithms are improved to enhance their capabilities for target detecting, bearing...
For surface ships, the towed hydrophones array is usually used to detect azimuth and to track moving targets because of its large aperture. The effective scope of a common sound pressure single array is only 180°, so that the common array cannot determine whether a target is to the left or to the right. While a twin-line array has similarity with a planar array in theory, a twin-line array does have...
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