摘要
针对大规模共形阵列波束形成问题,提出一种宽带信号数字波束形成方法,介绍了该方法的具体实现过程,该波束形成流程主要包括子阵内和子阵间波束形成2部分。由地平坐标系中目标位置推导出子阵视线坐标系目标来波方向后,对宽带数字波束形成方法进行理论推导:子阵内通过幅相加权、子阵间进行时延补偿和相位加权。通过软件仿真和原理样机试验,充分验证了该方法正确、可行。
A wideband digital beamforming method for conformal array antenna is proposed for beamforming of large-scale conformal array,and the realization process of the method is introduced.The flow of beamforming mainly includes beamforming in and between subarrays.After deducing the direction of arrival in line-of-sight coordinate system from target direction in geodetic coordinate system,the theoretical derivation of wideband digital beamforming is conducted, including amplitude-phase weighting in subarrays, and time-delay compensation and phase weighting between subarrays. The correctness and feasibility of the method are verified through software simulation and principle prototype experiment.
作者
贾振国
吴海洲
JIA Zhen-guo WU Hai-zhou(The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China)
出处
《无线电工程》
2017年第9期73-76,共4页
Radio Engineering
关键词
共形阵列
宽带信号
数字波束形成
幅相加权
时延补偿
conformal array
wideband signal
DBF
amplitude-phase weighting
time-delay compensation
