嵌入式無線定位追蹤系統(tǒng)的技術研究
[Abstract]:At present, wireless positioning technology is widely used in the field of vehicle navigation, but the vehicle navigation system is limited in flexibility and can not be carried around because of the influence of volume power consumption. In addition, some of the common GPS positioning handles, mobile phones, and other products tend to focus on location tracking and communication. The combination of positioning and communication is also a hot research topic. For example, public security officers on duty, prison custody, The combination of location and communication is required for the transportation of criminals. There are some problems in a single location mode, for example, GPS location may be unable to locate the satellite, the positioning accuracy of radio positioning technology is too low, how to combine various positioning methods, It is also a hot research topic to be able to meet the accuracy requirement and to be in place at any time and anywhere. Based on the above situation, it is very meaningful to study the practical embedded wireless positioning tracking system. This paper presents a method to solve the above problems and designs an embedded wireless positioning and tracking system. The system uses GPS positioning as the main positioning mode and network positioning as the auxiliary way to complete the communication of the positioning data through the GSM/GPRS network. The system is divided into two parts: location tracking signal source and tracking management handset. The theoretical basis of the system is studied in this paper. According to the demand of small volume and low power consumption, the selection of devices is concerned. On this basis, the design of the hardware circuit and the fabrication of the circuit board have been completed. The system selects NEO-5M to receive satellite positioning signal, LEON-G100 completes the auxiliary positioning and information transmission. In addition, the system is equipped with control keys and LCD display screen. In order to facilitate the subsequent processing of data and map matching, the USB interface circuit is designed. Finally, on the basis of hardware design and software design, the filtering method of data processing and simulation analysis are studied, and a group of experiments are made to verify that the single point positioning error of longitude and latitude of the system is less than 5m. The stability of dynamic positioning is good.
【學位授予單位】:南京理工大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TN95;TP368.1
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