Beamforming method and device under impulse noise
A technology of beamforming and impulse noise, which is applied in the field of beamforming methods and devices under impulse noise, to achieve the effects of improving output SINR, avoiding statistical parameters, and reducing sidelobe interference and noise
Active Publication Date: 2019-10-11
SHENZHEN UNIV
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[0007] The main purpose of the present invention is to provide a beamforming method and device under impulsive noise, aiming to solve the problem of how to use the sparsity of the beam pattern to reduce sidelobe noise and interference and enhance the target signal on the basis of unknown statistical characteristics of impulsive noise , the technical problem of improving the output SINR
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[0023] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0024] Due to the unknown statistical characteristics of impulse noise in the prior art, there is a technical problem of how to use the sparsity of the beam pattern to reduce sidelobe noise and interference, enhance the target signal, and improve the output SINR.
[0025] In order to solve the above-mentioned technical problems, the present i...
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The invention discloses a method and device for beam forming under pulse noise. The method comprises the steps that a target optimization problem is obtained by utilizing the sparsity of a beam forming directional diagram in combination with the minimization of the array output geometric power and l1-norm, the target optimization problem is solved by utilizing the stochastic gradient algorithm or the similar recursive least-squares method to obtain an optimal weight vector, and beam forming is carried out according to the optimal weight vector. Compared with the prior art, the target optimization problem is obtained by utilizing the sparsity of the beam forming directional diagram in combination with the minimization of the array output geometric power and l1-norm, the target optimization problem is solved by utilizing the stochastic gradient algorithm or the similar recursive least-squares method to obtain the optimal weight vector, and thus estimation of the statistical parameters of pulse noise can be avoided; the method and device for beam forming under pulse noise are applicable to almost all noise pulses; meanwhile, sidelobe jamming and noise are effectively reduced, and the output SINR is increased.
Description
technical field [0001] The invention relates to the technical field of array signal processing, in particular to a beamforming method and device under impulse noise. Background technique [0002] Whether in the field of radar or communication technology, array signal processing has always been an important task for multi-antenna systems, and Beam Forming (BF) technology is one of the most important technologies in array signal processing. The basic idea is to maximize the output signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) by enhancing the signal of interest and suppressing interference signals from other directions. [0003] Traditional beamforming methods are based on the second-order statistics of the array output to minimize the array output power, such as Capon beamforming technology, which minimizes the array output power by making the array gain in the direction of the signal of interest equal to 1. However, the technology h...
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IPC IPC(8): G01S7/28H04B7/06
Inventor 阳召成汪小叶黄建军
Owner SHENZHEN UNIV