基于四階累積量的空間信號2-D DOA分離估計
A NEW APPROACH FOR 2-D DIRECTION OF ARRIVAL ESTIMATION SEPARATELY BASED ON FOURTH ORDER CUMULANT
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摘要: 本文基于平行均勻線性陣列和四階累積量提出了一種新的任意高斯噪聲環(huán)境下的多個空間信號二維到達(dá)方向分離估計方法。通過巧妙定義陣列輸出四階累積量矩陣,該方法不需要譜峰搜索就可以估計信號二維到達(dá)方向。計算機(jī)模擬結(jié)果證實了方法的可行性。
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關(guān)鍵詞:
- 陣列; 方位角; 仰角; 四階累計量
Abstract: Based on a parallel uniform linear array and fourth order cumulant, a new approach for estimating multiple spatial narrow-band signal 2-D directions of arrival separately in the arbitrary Gaussian noise environment is presented. With flexible definition of fourth order cumulant of the array output signal, the spectral peak searching is not necessary for the new separable approach. Computer simulation confirms its availability. -
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