Marine Radar Simulator Based On The Usb Design And Realization

The navigational radar installed on the ship is the eye of captain. It is indispensable equipment for safe navigation. Radar equipment mainly shows the following advantages: firstly, it is easy to use and provides a clear display of relatively accurate data of detected targets. Secondly, navigational radar could be used in some unfavorable conditions, and the range is far enough. Therefore, the function of navigational radar is unique in many of the navigational equipments. In this case, IMO have clear regulations on quantity and quality about the radars installed on the ship.STCW definitely order that the officer of watch onboard a ship of more than 500 ton must have the ability to use radar and ARPA to keep the voyage in safe stage. And the ability of manipulation, interpretation and analysis is based on the excise of radar simulators.In this case, the importance of navigational radar in maritime education is very evident. The simulator teaching is strengthened. Recently, there are many units develop the radar signal generator based on AVIMA mode, and it is hard to be in accord with STCW requirements. Base on the PC and in addition with radar interface, a more promising direction of development is to simulate radar display based on graphic mode.With the reason that the technology USB is new and the complication of the protocol, there is no radar simulators based on USB technology. Therefore, the research and design of radar simulator based on USB technology is a value subject.The theoretical part of this paper is based on the USB protocol analysis, and also using the software developed by author to perform the tests and experiments. There are two parts of the research work, software design and hardware design of the system, in this paper. The whole system includes the radar PC connect unit, the radar video transfer unit, transform unit, trigger, bearing, heading mark, log and compass units and the buffer units. In the development process, Protel 99SE is used to design the hardware circuit.The microcontroller embedded programming is base on the KEIL and use C and assembly language for programming, The software developed includes the modules of the software framework, the GPIF transfer part and trigger, bearing, and heading mark generation program.The WDM driver provides the function of connecting the application to the hardware. The radar application program provides the function of communication, radar data transfer and radar interface controlling.The research and development of the system are as well significant to the application in navigational radar simulator and other relative fields.