A SIMPLE METHOD OF ADAPTIVE BEAMFORMING FOR SUPRESSING STRONG INTERFERENCE

In the traditional adaptive beamforming model proposed by widrow there are K elements and KL weight coefficients. It is necessary that each of KL weight coefficients are iterated in every sample period.
A special situation of adaptive beamforming is considered in this paper, that is the case of strong localized interference.
Using the optimum transfer function in frequency domain we proved that in the ease of strong localized interference there is a canonical from for optimum transfer function. It can be expressed in term of directive vector of interference and signal. The weight coefficients of those vectors can easily calculated by a linear equation, the order of this equation is equal the number of interference plus one.
The calculation method of coefficient matrix of linear equation is given. A rapid adaptive beamforming can be obtained without iterative operation.
The adaptive beamforming system described in this paper have considrably redused the calculation of tapped delay line.
Some practical examples are shown.