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本文给出时域上数字多波束成形的一种新方法.它采用并行流水线结构,把数字滤波、升采样以及最优加权结合在一起,利用高速RAM和VLSI DSP芯片动态地构成一种高精度延时补偿的多波束数字信号处理系统.这种系统与传统波束成形比较,具有精度高,运算量少,编程容易,硬件结构紧凑的特点.文中给出设计的基本原理及硬件实现的方法.
In this paper, a new method of digital multibeam forming in the time domain is proposed, which uses a parallel pipeline structure to combine digital filtering, upsampling and optimal weighting, and uses high-speed RAM and VLSI DSP chips to dynamically form a high-precision Delay compensated multi-beam digital signal processing system.Compared with the traditional beamforming, this system has the characteristics of high precision, less computation, easy programming and compact hardware structure.The paper gives the basic principles of design and the method of hardware implementation.