Antenna array fault diagnosis method considering array errors in impulse noise environment

Abstract

The invention discloses an antenna array fault diagnosis method considering array errors in an impulse noise environment, and relates to the field of antenna array signal processing. The method comprises the following steps: establishing a mismatched array far-field radiation model where there is an array error; modeling additive impulse noise by adopting Laplace distribution; establishing an optimization problem for reconstructing array excitation and suppressing impulse noise and array errors at the same time; performing equivalent transformation on the optimization problem, and solving theoptimization problem after equivalent transformation to obtain a reconstruction result of array excitation; and finally, comparing the array excitation reconstruction result with reference excitationto obtain estimate the position of a failed array element.

Description

technical field [0001] The invention relates to the field of antenna array signal processing, in particular to an antenna array fault diagnosis method considering array errors in an impulse noise environment. Background technique [0002] Due to the increasing demand for high gain and high spatial resolution, people began to use large-scale antenna arrays. Antenna arrays have been widely used in radar, communication and other fields. In a large-scale antenna array, there is a high possibility of element failure, and the failure of the array element will have unexpected effects on the performance of the array, such as the increase of the side lobe level of the array pattern, the change of the direction of the array beam, etc. . If engineers can know the number of failed array elements and their positions in the array, they can be repaired or replaced, so the diagnosis of failed array elements is very important. With the increasing scale of antenna arrays in engineering app...

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Problems solved by technology

But it does not take into account array errors and impulse noise environment

Huapeng Zhao et al. proposed an array fault diagnosis method based on support vector regression in an impulsive noise environment. The document Diagnosis of Array Failure in Impulsive Noise Environment Using Unsupervised Support Vector Regression Method does not consider the actual array error; therefore, currently There is not yet a method that takes both the impulse noise environment and array errors into account

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