摘要
基于直线阵列天线体制,介绍了数字波束形成(Digital Beam Forming,DBF)技术的原理、系统组成和实现方法,给出了详细的公式推导,对数字波束形成的正交校正、通道一致性校正和波束形成等关键技术进行了描述,并说明了关键技术的有效解决方法。结合工程实践,提出用现场可编程门阵列(FPGA)和数字信号处理器(DSP)相结合的架构来完成数字波束形成板的实现方式,并对数字波束形成板的工作模式和工作流程做出了详细说明。所给出的理论和方法都是通过实践检验的,具有一定的实用性。
Based on the linear array antenna system,the basic principle,system composition and implement method of digital beam forming（DBF） are analyzed critically,with the detailed formula.The orthogonal signal correction,channel match correction,beam forming,key technologies and implement methods are described in detail.Combined with engineering practice,the implementation based on the structure of FPGA and DSP is supported,and the working mode and process of DBF system is given.The engineering practice shows that the theory and ways have practicability.
出处
《无线电工程》
2011年第9期25-27,共3页
Radio Engineering
关键词
直线阵列
数字波束形成
正交校正
通道一致性校正
FPGA
linear array
digital beam forming
orthogonal signal correction
channel match correction
FPGA
