Open AccessResearch on UWB Beamforming Using Direct Time Delay Compensation Based on Hermite Interpolation Filter
Author(s) -
Qingyang Du,
Yunpeng Song,
Xiaojian Cao
Publication year - 2013
Publication title -
leida xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.301
H-Index - 13
ISSN - 2095-283X
DOI - 10.3724/sp.j.1300.2013.13028
Subject(s) - compensation (psychology) , computer science , beamforming , interpolation (computer graphics) , hermite interpolation , control theory (sociology) , hermite polynomials , mathematics , telecommunications , psychology , artificial intelligence , mathematical analysis , control (management) , frame (networking) , psychoanalysis
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