Research on UWB Beamforming Using Direct Time Delay Compensation Based on Hermite Interpolation Filter

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Abstract Beamforming of Ultra Wide Band (UWB) signals is a crucial technology in UWB radar. Conventional beamforming methods have limitations in instantaneous bandwidth, scanning range, beam pattern deviation and a mainlobe distortion. Direct Time Delay (DTD) compensation is an effective way to avoid above problems. In this paper, a DTD compensation based on Hermite interpolation filters is presented to implement beamforming of UWB signals. Theoretical analysis and simulation results show that the magnitude responses and group delay of the proposed filters are better than those based on Lagrange and Radial basis methods. The demonstration of the UWB Linear-Frequency modulated (LFM) signal also shows excellent performances on the UWB beamforming of the proposed method.

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	Articles by authors
	Du Qiang
	Song Yao-liang
	Cao Xiao-jian

Key words： UWB radar Beamforming Hermite interpolation Fractional delay filters Linear-Frequency Modulated (LFM) signal

Received: 2013-03-20; Published: 2013-06-03

Cite this article:

Du Qiang,Song Yao-liang,Cao Xiao-jian. Research on UWB Beamforming Using Direct Time Delay Compensation Based on Hermite Interpolation Filter[J]. JOURNAL OF RADARS, 2013, 2(3): 278-283.

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