﻿ 基于希尔伯特变换的数字波束合成算法

# 基于希尔伯特变换的数字波束合成算法A Digital Beamforming Method Based on Hilbert Transform

In order to reduce the complexity of Doppler Velocity Log’s beamformer, according to the basic principle of the phase shift beamforming and the Hilbert transform properties, a digital beamforming method based on Hilbert transform is proposed. Firstly, the quadrature demodulating and the π/2 phase shift of the beamforming technology are implemented by using Hilbert transform. Then, using the Hilbert transform properties, the real and imaginary parts of the demodulated complex signal are combined linearly to form a beam with a particular direction. Computer simulation results show the effectiveness of the proposed method, and the complexity of the beamformer is greatly reduced.

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