基于均勻圓陣的寬頻段二維零點預(yù)處理MUSIC算法
The 2-D null preprocessing music algorithm for wide-band signals with uniform circular arrays
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摘要: 該文基于多圈均勻圓陣(UCA),在UCA-RB-MUSIC算法(Mathews等,1994)和一維零點預(yù)處理算法(魏平等人,1996)的基礎(chǔ)上,提出了一種可任意設(shè)置響應(yīng)零點的寬頻段二維MUSIC算法,計算機仿真表明,該方法在保持了UCA-RB-MUSIC算法的高精度、高分辨力和降低了運算量的前提下,在寬頻段內(nèi)對于空間干擾信號的抑制有較好的效果。
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關(guān)鍵詞:
- 均勻圓陣; 寬頻段; 波束形成器; 預(yù)處理; 波束函數(shù)
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. -
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,肖先賜,任意設(shè)置空間零點的測向方法,電子科技大學(xué)學(xué)報,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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