DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES

Li Pingan; Xu Jiadong; Tong Mingan

Volume 21 Issue 1

Jan. 1999

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Article Navigation > Journal of Electronics & Information Technology > 1999 > 21(1): 136-140

Li Pingan, Xu Jiadong, Tong Mingan. DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES[J]. Journal of Electronics & Information Technology, 1999, 21(1): 136-140.

Citation:

Li Pingan, Xu Jiadong, Tong Mingan. DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES[J]. Journal of Electronics & Information Technology, 1999, 21(1): 136-140.

Li Pingan, Xu Jiadong, Tong Mingan. DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES[J]. Journal of Electronics & Information Technology, 1999, 21(1): 136-140.

Citation:

Li Pingan, Xu Jiadong, Tong Mingan. DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES[J]. Journal of Electronics & Information Technology, 1999, 21(1): 136-140.

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DIRECTION FINDING FOR CORRELATED WIDE-BAND SOURCES

Received Date: 1997-08-01
Rev Recd Date: 1998-04-07
Publish Date: 1999-01-19

Abstract

Abstract

In this paper, theoretical analyses and simulations are carried out to show that there are signal cancellation phenomena in the DED method proposed by Kumar (1996) for wide-band array processing in unknown noise, and new method is suggested to perform direction of arrival (DOA) estimation in unknown noise. In the new method, a wide-band focusing technique without initial estimate of the DOAs is employed, and the frequency-direction ambiguity in wide-band processing is avoided. Monte Carlo tests are carried out for comparing the performance of the new method with that of the DED method.

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References(1)

References

Wang H, Kaveh M. Coherent signal-subspace processing for the detection and estimation of angles[2]of angles of arrival of multiple wide-band sources. IEEE Trans. on ASSP, 1985, ASSP-33(8): 823-[3]831.[4]Buckley K M, Griffith L J. Broad-band signal-subspace spatial-spectrum(BASS-ALE) estimation. IEEE Trans. on ASSP, 1988, ASSP-36(7): 953-964.[5]Li Pingan, Yu Bianzhang, Sun Jincai. 2-D spatial-spectrum estimation for wide-band siganls without a priori knowledge of the number of sources. Science in China, 1996, 39(4): 386-393.[6]Kumar K A, Rao P R. Rajagopal R, Rao P R. Wide-band DOA estimation in the presence of correlated noise. Signal Processing, 1996, 35(1): 23-34.[7]Li Pingan, Xui J, Yu B. An efficient method in array processing for eliminating the signal cancellation phenomena of the differencing method. Signal Processing, 1997, 36(3): 305-312.

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