Universal novel wideband beam forming system and realizing method

Abstract

The invention provides a novel wideband beam forming system and a realizing method. The system is composed of a set of antenna arrays, a set of band-pass filters and a set of multiplying units and summators. Space signals are received through antenna array elements, each path of signals passes through the band-pass filters, frequency resolution and corresponding processing are conducted within a specified bandwidth range, relative phase information of each path of signals is reserved in the whole signal processing process of a beam former, so that the space information of each path of signals is reserved, and then a corresponding constant-beamwidth beam direction pattern is obtained through weighted processing and combination of the multiplying units and summators. By the adoption of the system and method, hardwire complexity of the system is reduced, system reaction time is shortened, and then it is guaranteed that real-time, effective, flexible and reliable broadband constant beam pointing is realized.

Description

technical field [0001] The present invention relates to a broadband system and implementation method used in the electronic field, in particular to a novel broadband beam forming system and identification method. Background technique [0002] Digital beamforming (DBF) uses digital signal processing technology to weight the signals received by the antenna array, and adjusts the weights of each array element so that the signals can be received effectively. This is because the weights of each array element form the weight vector of the array, and the weight vector directly determines the direction diagram of the adaptive array, that is, determines the receiving effect of useful signals. Early digital beamforming was mainly for narrowband signals, but as the array signal processing has become more and more widely used, many broadband signal processing problems have been encountered in practice, such as seismic signals, voice signals and sonar signals. deal with. When the tradi...

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Problems solved by technology

This type of beamformer needs to know the orientation information of the desired signal in advance. If the direction of arrival of the desired signal is not estimated accurately, the main beam will point to a wrong direction. At this time, the optimal weight will suppress the desired signal as interference , thus forming a null in the true incoming wave direction, so the performance is poor in the environment with high signal-to-noise ratio

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