Design for Frequency Invariant Beamformers Based on Cubic Spline Function

Hong Qi Yu; Xin Xu; Zhao Lin Sun; Hai Jun Liu; Jie Tao Diao

doi:10.4028/www.scientific.net/AMM.198-199.332

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 198-199Design for Frequency Invariant Beamformers Based...

Design for Frequency Invariant Beamformers Based on Cubic Spline Function

Abstract:

A new method of implementing frequency invariant beamformers based on cubic spline function is presented. Based on the frequency, the sensor distance of the virtual array is generated. The virtual array output is formed from the sensor array by cubic spline function interpolation. The beamformers of every frequency bins in the bandwidth of the signal is similar to that of the referenced frequency. The method is simple and easy to implement. Simulation results demonstrate the effectiveness of the method.

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Applied Mechanics and Materials (Volumes 198-199)

Pages:

332-337

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.198-199.332

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Online since:

September 2012

Authors:

Hong Qi Yu, Xin Xu, Zhao Lin Sun, Hai Jun Liu, Jie Tao Diao

Keywords:

Array Signal Processing, Beam-Forming, Cubic Spline Function, Frequency Invariant Beamformers, Wideband Sources

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