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The signal/noise performance of electro-acoustic strip arrays

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The directional patterns (or directivity curves) and the signal/noise performance of fourteen different arrangements of a strip array are discussed and tabulated. The fourteen arrangements include five used for the determination of the direction of a received signal by a null method. The noise concerned includes the thermal-agitation noise of the array, the noise generated in the receiving amplifiers, and to a large extent also noise arising in the medium of transmission.

The Noise Factor used in these calculations is shown to be closely related to the Directivity Index (or Power Gain) in ordinary tapered arrays. The paper is written in terms of electro-acoustic arrays, but applies equally, in principle, to electro-magnetic arrays.
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Document Type: Research Article

Publication date: January 1, 1958

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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