Research & Implementation Of Real Time Multi-Beam Processing & Acquisition System

With the development of modern sonar signal processing, beam-forming technic has become an important component. This dissertation is based on the theory of beam-forming. In hardware, we achieve real-time processing of the signal beam formed on computers for storage and display. Real-time signal processing system is a high-speed computation, and computation variety of integrated information processing system. The design of real-time signal processing systems is used in the program's characteristic, using the DSP+FPGA processing mechanism.The entire system is composed of 10 receiver array, multi-beam receiver and computer hardware modules. Multi-beam receiver is the core component of the system. It is composed of power-control, simulate reception and collecting-control boards. Multi-beam receiver achieves a digital beamforming and the design of the control module. And the using of fiber transmission made it communicate with the computer.This dissertation is to amplify and filter the signal first, and then make beam-forming processing, with the final package upload to the computer. Through a significant dialogue with the computer, it analyse the raw data and beamforming data in real time. Under orders through the computer character needed to change the traditional allocation of modules, thereby obtaining high signal-to-noise ratio of the signal characteristics.This dissertation focuses on flexible and extensible design, bring a lot of convenience for debugging and operating system.