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- W3146021969 abstract "In order to solve the existing problems of antenna in DS/FH spread spectrum TT and C system such as wideband spectrum,wide range of airspace,and strong interference,a novel method was proposed to obtain a steering-invariant and frequency-invariant beampattern by combining the second-order cone programming(SOCP)constraints with linear constraints.Taking the advantages of SOCP,the beamformer design problem was converted into a FIR filter design problem with a given frequency response.For the non-linear phase characteristics of the FIR filter used for the broadband beamformer,the frequency response of the designed filter was made to approximate to the frequency response of desired filter by using the least squares error criterion.By adding the constraint condition,the algorithm was made to maintain a steering-invariant beampattern in different orientation with the broad null to reject broadband interferences.Simulation results show that the proposed algorithm can make the beampattern response approximately the same to the DS/FH signals at different frequencies,and realize constant beamwidth,gain,and adaptive null control under the designed main-lobe direction of±60°,which can better meet the requirement of array antenna for aerospace TT and C system much." @default.
- W3146021969 created "2021-04-13" @default.
- W3146021969 creator A5061027270 @default.
- W3146021969 date "2014-01-01" @default.
- W3146021969 modified "2023-09-23" @default.
- W3146021969 title "Adaptive Beamforming Algorithm for DS/FH Spread Spectrum TT and C Signals" @default.
- W3146021969 hasPublicationYear "2014" @default.
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