Direction-of-Arrival Estimation of Coherent Signals Using a Cylindrical Array
Direction-of-Arrival Estimation of Coherent Signals Using a Cylindrical Array
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DOI：
10.1093/ietcom/e88-b.6.2588
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发表时间：
2005-06
期刊：
影响因子：
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通讯作者：
Masaki Takanashi;T. Nishimura;Y. Ogawa;T. Ohgane
中科院分区：
文献类型：
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作者：
Masaki Takanashi;T. Nishimura;Y. Ogawa;T. Ohgane
由于可以应用空间平滑预处理（SSP）技术，因此主要使用均匀线阵（ULA）进行相干信号的波达方向估计。然而，由于对称性，通过DOA估计具有模糊性，并且估计精度取决于DOA。虽然这些问题可以通过使用均匀圆阵（UCA）来解决，但我们不能估计相干信号的DOA，因为SSP技术不能直接应用于UCA。本文提出了一种利用叠层UCA构成的圆柱阵对相干信号进行二维DOA（极角和方位角）估计的方法。
Mainly, a uniform linear array (ULA) has been used for DOA estimation of coherent signals because we can apply the spatial smoothing preprocessing (SSP) technique. However, estimation by a ULA has ambiguity due to the symmetry, and the estimation accuracy depends on the DOA. Although these problems can be solved by using a uniform circular array (UCA), we cannot estimate the DOA of coherent signals because the SSP technique cannot be applied directly to the UCA. In this paper, we propose to estimate 2-dimensional DOA (polar angles and azimuth angles) estimation of coherent signals using a cylindrical array which is composed of stacked UCAs.