基于DSP的声纳波束形成系统设计

Designing Sonar Beam Forming System Based on DSP

由TMS320C6416的声纳波束形成系统,该系统包括波束形成板、信号处理板、音频处理板、控制底板。其中波束形成板是系统的核心,16路声信号先经过光电隔离,送入DSP进行运算。双端口存储器阵列存储波束形成的所有结果,并分配到各处理板,利用其双端口特点实现波束形成板和其他处理板之间的数据交换。逻辑控制电路由CPLD完成,主要完成整个处理单元的时序和逻辑控制。该系统具有可扩展、易于构成并行系统的特点,方便实现各种波束形成算法,具有一定的工程实用价值。

A systemic design of the sonar beam forming system is introduced. This design includes beam forming board, signal processing board, audio processing board and control board. Beam forming board is the key of the system, 16 acoustic signals are through photoelectric separating before sending to DSP. The results of beam forming place into double port memory, and allocate other boards. Beam forming board changes data with other boards using double port memory. Logical control circuit is implemented by CPLD, and its main function is the whole units time sequence and logical control. This system has ability of expanding, making up of parallel system, and easily come out other beam forming algorithms. It has some practical value of engineering.