摘要
为了控制全空域多目标测控天线波束合成对全空域多目标系统设计的影响,研究了数字波束合成后的信号频响特性。通过分别对天线子阵以及所组成的球面阵进行数学建模,仿真得到相应波束的幅频特性、相频特性与群延迟特性,并分析了其变化原理。分析结果表明,全空域多目标测控天线波束合成频响特性与阵列流形、相控方式和扫描方式有关。研究结论可用于指导全空域多目标测控系统的设计。
In order to control the influence of beamforming of multi-target telemetry,tracking and command(TT&C)antenna on communication system,the principle of frequency response of beamforming is investigated.Through modeling the mathematical model of subarray and hemispherical coverage array,the amplitude-frequency characteristic,phase-frequency characteristic and group delay are simulated.The calculation results indicate the frequency response of beam is closely related to the scan angle,phase shift and array model.The conclusion can be used in the design of high-precision multi-target TT&C antenna in hemispherical coverage.
作者
袁田
YUAN Tian(Southwest China Institute of Electronic Technology,Chengdu 610036,China)
出处
《电讯技术》
北大核心
2019年第8期901-905,共5页
Telecommunication Engineering
基金
装备预研领域基金项目(61404130111)
关键词
多目标测控
全空域
波束形成
频响特性
multi-target TT&C
hemispherical coverage
beamforming
frequency response
