Dot-shaped beamforming analysis based on OSB log-FDA  

作　　者：WANG Bo XIE Junwei ZHANG Jing ZHANG Haowei 

机构地区：[1]Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China [2]Highway Railway College,Shaanxi Vocational and Technical College of Transport,Xi’an 710018,China

出　　处：《Journal of Systems Engineering and Electronics》2020年第2期312-320,共9页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61503408)。

摘　　要：The range and angle information of the frequency diverse array(FDA) cannot be exclusively determined at the output of the array because of the range-angle coupled transmit beampattern. The best decoupling approach is to form a dot-shaped beampattern rather than the S-shaped beampattern of the basic FDA.Considering the degradation of the output signal-to-interferenceplus-noise ratio(SINR) caused by the coupled beampattern, we propose a dot-shaped beamforming method based on the analyzed overlapping subarray-based using a logarithmic offset and a subarray-based planar FDA using a logarithmically increasing frequency offset, with elements transmitting at multiple frequencies. Several simulation results demonstrate the effectiveness of the proposed method in transmit energy focusing, sidelobe suppression and array resolution.

关 键 词：subarray-based FREQUENCY diverse array(SB FDA) planar FREQUENCY diverse array(PFDA) decoupling dot-shaped beamforming 

分 类 号：TN958.92[电子电信—信号与信息处理]