Bearing estimation of a source with complicated spectrum using a moving sparse antenna array
Електронний науковий архів Науково-технічної бібліотеки Національного університету "Львівська політехніка"
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Bearing estimation of a source with complicated spectrum using a moving sparse antenna array
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| Creator |
Korotin, P. I.
Rodionov, A. A. Turchin, V. I. |
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| Subject |
аcoustic array systems and processing
aperture synthesis and source localization sparse antenna array |
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| Description |
Estimation of bearing of a narrowband source with the use of a sparse equidistant array usually turns out to be ambiguous. For a wideband source with smooth spectrum, this ambiguity can be overcome at the expense of decreasing the spatial resolution. At the same time, the ambiguity of bearing estimate of a narrowband source can be eliminated if the array is moving in respect to the source, and the well-known technique used in radars and sonars with synthetic aperture is used (in this case, a single receiver is enough). In the present paper, a scenario is analyzed when the source spectrum has a smooth wideband component and several narrowband components; such a spectrum is typical, for example, for underwater noise of ships. It is shown that a procedure of aperture synthesis applied to such a signal gives, under some conditions, the same result as conventional beamforming using a motionless array. This fact allows for effective separation of discrete components of the spectrum from its continuous part. Estimates of aperture synthesis duration allowing one to perform such a separation, as well as output signal-to-noise ratios, are presented. |
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| Date |
2010-06-15T14:19:49Z
2010-06-15T14:19:49Z 2009 |
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| Type |
Article
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| Identifier |
Korotin P. I. Bearing estimation of a source with complicated spectrum using a moving sparse antenna array / P. I. Korotin, A. A. Rodionov, V. I. Turchin // Теорія та техніка антен : матеріали 7-ї Міжнародної конференції, 9–12 червня 2009 року, Львів, Україна. – Львів : Видавництво Національного університету "Львівська політехніка", 2009. – C. 151–153. – Bibliography: 3 titles.
http://ena.lp.edu.ua:8080/handle/ntb/5197 |
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| Language |
en
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| Publisher |
Видавництво Національного університету "Львівська політехніка"
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