Ultra-wideband beam former based on differential operator and achieving method thereof

Abstract

The invention discloses an ultra-wideband beam former based on a differential operator and an achieving method thereof. The ultra-wideband beam former comprises a beam summation module and a plurality of array element channels. Each array element channel comprises a weight coefficient and delay quantity storage module, a narrow-band phase compensation module and an accurate delay compensation module. The achieving method of the ultra-wideband beam former comprises the steps of storage of weight coefficient and delay quantity, narrow-band phase compensation, accurate delay compensation and beam summation. A differential operator delay compensator is adopted to perform delay compensation, multiplication times is reduced, and calculation amount and multiplier resource expenses are reduced. The delay compensator is an all-pass filter, accurate delay compensation in full bandwidth can be achieved, the beam former based on the differential operator delay compensator can achieve wide-angle continuous beam scanning by adopting a programmable logic device field programmable gate array (FPGA), and has high phase shift / delay accuracy.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to an ultra-wideband beamformer based on a differential operator and an implementation method thereof in the technical field of ultra-wideband array radar. The present invention solves the problem of excessive resource overhead in implementing ultra-wideband beamforming hardware, and can be used for broadband / ultra-wideband beamforming. Background technique [0002] Beamforming is a technology widely used in the field of array radar. In order to make the element antenna array point to a specific direction and strengthen the signal strength in this direction, the basic beamforming method is to adjust the signal received by each element according to the The arrival direction of the beam is delayed, compensated until the signals of each array element are in the same phase and then added to obtain the beam output in this direction. Traditional phase-shifting processing for ...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, solve the problems such as the complex and difficult implementation of variable fractional delay filter structure in broadband and ultra-wideband beamforming, and propose a kind of ultra-wideband beamformer based on differential operator and its The implementation method reduces the structural complexity of the variable fractional delay filter and reduces the hardware resource overhead of ultra-wideband beamforming

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