基于均匀圆阵的宽频段二维零点预处理MUSIC算法
The 2-D null preprocessing music algorithm for wide-band signals with uniform circular arrays
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摘要: 该文基于多圈均匀圆阵(UCA),在UCA-RB-MUSIC算法(Mathews等,1994)和一维零点预处理算法(魏平等人,1996)的基础上,提出了一种可任意设置响应零点的宽频段二维MUSIC算法,计算机仿真表明,该方法在保持了UCA-RB-MUSIC算法的高精度、高分辨力和降低了运算量的前提下,在宽频段内对于空间干扰信号的抑制有较好的效果。Abstract: Based on UCA-RB-MUSIC algorithm(Mathews, et al., 1994) and 1-D null preprocessing algorithm (Wei Ping, et al, 1996), a 2-D UCA MUSIC algorithm for wide-band sources with arbitrary spatial null response is presented. The computer simulations indicate that the spatial wide-band interference can be suppressed exactly, the high precision and high resolution of UCA-RB-MUSIC algorithm is maintained, and the computational burden is reduced.
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C.P. Mathews, M. D. Zoltowski, Eigenstructure techniques for 2-D angle estimation with uniform circular arrays, IEEE Trans. on SP, 1994, 42(9), 2395-2407.[2]M.D. Zoltowski, G. M. Kautz, S. D. Silverstein, Beamspace root-MUSIC, IEEE Trans. on SP,1993, 41(1), 344-364.[3]魏平,肖先赐,任意设置空间零点的测向方法,电子科技大学学报,1996,25(1),6-10.[4]H.B. Lee, M. S. Wengrovitz, Resolution threshold of beamspace MUSIC for two closely spaced emitters, IEEE Trans ASSP, 1990, 38(9), 1545-1559.[5]A.J. Weiss, B. Friedlander, Preprocessing for direction-finding with minimal variance degradation IEEE Trans. on SP, 1994, 42(6), 1478-1485. -
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