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Coherent interference suppression by an antenna array of arbitrary geometry

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2 Author(s)
Yeh, C.-C. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Wun-Der Wang

An approach is investigated that can be applied to an array of arbitrary geometry for coherent and incoherent interference suppression. This approach consists of constructing a weight vector which minimizes the array output power subject to null constraint in the directions of the coherent interferers. In this way, the coherent interference is suppressed by the null constraint and the incoherent interference is suppressed by minimizing the array output. The approach requires the estimation of the angles of arrival of the coherent interferers. A simple bearing estimation method is described which can be applied to the scenario of one coherent interferer. The effect of error in bearing estimation on the array performance is discussed. The use of a high-order null constraint to counteract that error is discussed

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:37 ,  Issue: 10 )

Date of Publication:

Oct 1989

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