基于FPGA的宽带多普勒测速声纳数字系统的设计与实现

Design and implementation of the digital system of broad band Doppler velocity measuring sonar based on FPGA

针对多普勒测速声纳的高精度要求,采用宽带发射信号和相控阵波束形成技术,并利用FPGA在数据处理方面高速、并行、实时的特点,在以Altera StratixII EP2S60F484I4 FPGA为核心的系统上设计了宽带多普勒测速声纳数字系统,实现了采样控制及带通滤波、波束形成、相关运算等信号处理算法。测试结果显示,宽带信号能够更好地满足声纳系统高精度要求。

To meet the high precision of the doppler velocity measuring sonar, the broad band transmitting signal and phased- array are used, also with the high speed, parallel, real-time characteristic of processing data by FPGAs, the digital system of the Doppler velocity measuring sonar is designed and implemented on the core of Ahera＇s StratixII EP2S60F48414 FPGA , the sampling control, band-pass filtering, beam forming, correIation operation and other signal processing algorithms have been realized . Mean- while, the test results show that the broad band signal can meet the high precision of sonar system better.