Research of multi-FPGA signal processor for underwater 3-D imaging sonar system

A multi-FPGA signal processor is proposed for implementing the signal processing of underwater 3-D imaging sonar systems. The processing element of the system architecture is FPGA, and the beamforming algorithm of 3-D imaging sonar is implemented in the multi-stage parallel distributive steps. The FPGAs are connected using Low Voltage Differential Signaling (LVDS), which is in user defined protocol. Finally, the resources utilizations for the FPGAs are listed. The proposed signal processor has both low communication overhead and low requirement of hardware resource.

提出了一个多FPGA信号处理器，用于实施水下3-D成像声纳系统的信号处理。系统体系结构的处理元素是FPGA，并且在多阶段并行分布步骤中实现了3-D成像声纳的光束形成算法。使用用户定义协议中的低压差分信号传导（LVD）连接FPGA。最后，列出了FPGA的资源利用。所提出的信号处理器既有较低的通信开销，又有硬件资源的需求低。