Research And Design Of Moving Target Location And Tracking System Based On GPS / BDS

With the improvement of the Global System for Mobile(GSM) technology and the Global Position System technology, the orientation tracking moving target technology is used more and more popularly. The positioning accuracy will be further improved by the hybrid position location technology of GPS/BDS. What more, it will be also promote the BDS into the civilian market quickly.In this paper based on the GPS(Global Positioning System) and BDS(Beidou navigation satellite system), a high-accuracy positioning and tracking system for the moving target is presented. It describes the involved core technologies of positioning system such as GSM communication, navigation and positioning of GPS/BDS. And also analyzes the design requirements of power supply circuit in the system. The paper puts forward the complete solution according to the requirement of the system.The system mainly consists of moving-target communication terminal and global system of mobile communication network. As the key module of the whole system, the hardware of the moving-target communication terminal is composed of an ATGM331 C unit, a TC35 I unit and a STC12C5A60S2 unit. According to the request of the system, the power supply circuit should has the functions of charging the lithium battery. And the corresponding application software mainly contains the microprocessor initialization, the decoding of GPS/BDS communication protocol, the decoding of short message service commands and the AT commands. In order to further improve the location accuracy, the kalman filter algorithm is used to fixed the location data.The practical testing results indicate that the system could work steadily and has the characteristics of high-accuracy positioning, small size, low-power consumption, convenient operation and so on with a wide field of application.