基于FPGA的频域宽带波束形成器

Frequency Domain Wide-band Beamforming Based on FPGA

主要介绍了一种分段重叠式宽带波束形成器在FPGA上的实现方法,此方法在常规波束形成的基础上将数据进行分段处理。其主要功能包括:形成基阵接收系统的方向性;进行空域滤波,提高信噪比;估计信号到达方向,进行多目标分辨等。通过实验证明,FPGA处理的结果与MATLAB仿真的数据结果具有较小的误差,信号还原率非常高。为波束形成在FPGA硬件设计中的正确性和可靠性提供了依据。

This paper mainly introduces a piecewise overlapping wideband beamforming device in FPGA implementation method, seg- mentation method in the conventional beam forming will be the basis of the data is calculated. Its main functions include： forming the direction of receiving system array ; conduct spatial filtering to improve SNR ; estimate the signal doa, multi - object resolution and so on. Experimental verification, The FPGA processing results with MATLAB simulation results of the data with smaller error, signal re- duction rate is very high. Provide a basis for the correctness and reliability for beamforming in the FPGA hardware design.