| 2-D spatial-spectrum estimation for wide-band signals without a priori knowledge of the number of sources |
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| 引用本文： | 李平安,俞卞章,孙进才. 2-D spatial-spectrum estimation for wide-band signals without a priori knowledge of the number of sources[J]. 中国科学E辑(英文版), 1996, 0(4) |
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| 作者姓名： | 李平安 俞卞章 孙进才 |
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| 作者单位： | Department of Electronic Engineering，Northwestern Polytechnical University，Xi'an 710072，China，Department of Electronic Engineering，Northwestern Polytechnical University，Xi'an 710072，China，Department of Electronic Engineering，Northwestern Polytechnical University，Xi'an 710072，China |
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| 摘 要： | ![]()
In array signal processing,the existing methods for DOA estimation of wide-band signals are only related to the azimuth estimation when the number or sensors is known.It is shown that a circular array possesses several nice properties.2-D spatial-spectrum estimation for wide-band sources is performed by using a circular array of sensors with sample delay lines.Further,the Choi' s approach is extended,which was suggested to estimate DOA of narrow-band signals when the number of sensor was unknown,to wide-band signal processing.The extended approach is shown to be quite adequate for wide-band signal subspace spatial-spectrum estimation (BASS-LE),and a large aperture (r>λvin/2) circular array is found to possess superior resolution capability and robustness.
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2-D spatial-spectrum estimation for wide-band signals without a priori knowledge of the number of sources |
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| LI Ping''''an,YU Bianzhang and SUN Jincai. 2-D spatial-spectrum estimation for wide-band signals without a priori knowledge of the number of sources[J]. Science in China(Technological Sciences), 1996, 0(4) |
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| Authors: | LI Ping''''an YU Bianzhang SUN Jincai |
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| Abstract: | ![]()
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| Keywords: | array signal processing 2-D spatial-spectrum estimation wide-band signal circular array. |
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