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Weight solving method for stable wave beam synthesizer

A technology of beamforming and weighting, which is applied in the field of weight calculation of robust beamformers, can solve the problems of increasing the amount of computation and increasing constraints in weight vector calculation, and achieve the effect of increasing the width of the null trap and simplifying the calculation of weights

Inactive Publication Date: 2010-09-22
CHONGQING UNIV
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  • Abstract
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Problems solved by technology

These methods can achieve good error correction effects, but due to the addition of a large number of constraints, the calculation of the weight vector increases a very large amount of computation

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  • Weight solving method for stable wave beam synthesizer
  • Weight solving method for stable wave beam synthesizer
  • Weight solving method for stable wave beam synthesizer

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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.

Description

Technical field The invention relates to the field of beam synthesis, in particular to a method for solving the weight of a robust beam synthesizer. technical background Beam combiners are widely used in communications and radars. Through certain optimization methods, signal processing is performed on the array antenna received signal x(t) to calculate the weight vector w(t) of the array, so that the main lobe of the array pattern is Quasi-desired signal, and zero trap aligns interference signal to suppress interference and improve the system output signal-to-interference-noise ratio. However, due to array position errors, channel inconsistency errors, and element coupling errors, there are errors in the estimation of the direction of arrival of the signal. As a result of the error, the desired signal will not be in the main lobe of the pattern, and the interference will not be in the null range of the pattern. This will make the beam combiner lose the interference suppression...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q23/00H01Q21/00G06F17/16G01S7/285
Inventor 曾浩张雷刘玲刘晓明
Owner CHONGQING UNIV
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