The Design Of An Underwater Navigation System And Development Of Hardware And Software Interface

Since World War II, the advancement of underwater navigation orientation technology is very notable, include multi-direction develop of technology theory, multifarious interrelated equipments and apparatuses and so on. In addition, because of the broad applying of computer technology, multifunctional Real-time processing and controlling are achieved by the connection between computer interface and another device. Thereby, the precision and reliability of navigation orientation are improved, which are evolution trend of current underwater navigation orientation technology.A active underwater short-baseline navigation system is designed in this paper. The system works with the way of synchronous beacons. This system can navigate the underwater vehicle accurately in the direction of the transmitter. Navigation can be accomplished by it in local sea area.This paper has accomplished a scheme of this navigation system. System structures and technical specified criteria are confirmed, and the hardware and software design of computer interface in the system has been developed.In this navigation system design, according the basic principle of underwater acoustic synchronous measuring distance, the advanced integrate circuit design technology and computer technology is applied adequately. PCI-BUS interface technology and Complex Programmable Logic Devices (CPLD) design technology are introduced. The measuring distance time-delay stored in programmable counter is collected by computer to process and draw track.In error minimum design of the navigation precision, geometrical error, measuring error and calculating error are considered well.