Weight solving method for stable wave beam synthesizer

A beamforming and weighting technology, applied in the field of robust beamformer weights solution, can solve problems such as adding constraints, increasing computational complexity in weight vector calculation, and achieving the effects of simple weight solution and increased null width.
CN101483280AInactive Publication Date: 2009-07-15CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2009-07-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a steady beam synthesizer weight solving method comprising the steps: firstly performing an AD sampling to an array receiving signal x(t), estimating a covariance matrix R; secondly performing a direction of arrival estimation through the covariance matrix, and obtaining a desired signal and a direction of arrival of M interface signals; thirdly obtaining M+1 sub weight vectors w0,..., wM; fourthly obtaining a total weight vector of the array according to a formula of w(t)=w0-sigma wm. The steady beam synthesizer has advantages that the array error is not needed to be complexly corrected by increasing constraint conditions, thereby at the same time of having less operation, realizing the robustness of the beam synthesizer.
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Description

technical field

[0001] The invention relates to the field of beam synthesis, in particular to a method for solving the weight value of a robust beam synthesizer. technical background

[0002] The beamformer is widely used in communication and radar. Through a certain optimization method, the received signal x(t) of the array antenna is processed, and the weight vector w(t) of the array is calculated, so that the main lobe of the array pattern is opposite to The quasi-desired signal, while the null trap is aimed at the interference signal, so as to suppress the interference and improve the system output signal-to-interference-noise ratio. However, due to the existence of array position errors, channel inconsistency errors, and array element coupling errors, there are errors in estimating the direction of arrival of signals. As a result of the error, the desired signal is not within the range of the main lobe of the pattern, and the interference is not within the null range o...

Claims

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