Spread Spectrum Communication System Design Of Buoy Based On DSP And FPGA

With the development of the underwater weapons, it becomes necessary to update the equipments which are used to test the performance of the new weapons. Recently it has been mentioned more and more to improve the technology the proving ground of underwater weapon, especially to create the new underwater track system. Depending on the Acoustics and Signal Processing theory's maturing step by step and the DSP and DGPS technology's increasing, it is possible for us to develop more advanced underwater track systems.The main work of this thesis includes: 1) migrate of wireless communication system according to the character of the ocean 2) design the communication interface using FPGA 3) compile the protocol of the wireless communication.System architecture design is crucial to a system's performance. Our system is composed of display and control subsystem on boat and buoys. Wireless communication system is the tache between the boat and buoys, which enables the system to track and position targets in wide range with high precision. This thesis introduces the design of wireless communication system. The thesis also discussed others including software and hardware realization of buoy electrical platform and module design of controlling application.Data exchange between buoys and computer comes true with the help of wireless microwave spread spectrum communication system, which is a wireless LAN comprising buoys and base station synthesizer and utilizing 2.4 GHz band with bit rate up to 1Mbps. As we know, such wireless digital microwave communication is seldom put into action on ocean, and offers a challenge for us at the same time. The thesis also illustrates the feature of transceiver, how to communicate, and designs communication protocol on the basis of practical working environment.