Based On The Design Of The Single-chip Gps Navigation Device

The paper is mianly concerned with the designing process of GPS navigation based on single-chip, and the hot topic "single chip system controlling the GPS module to achieve positioning and navigation". The GPS receiver board and the corresponding data processing,control terminal are realized by using u-blox's GPS module and single chip C8051F020 from America Cygnal company.System total design scheme is presented and the method of terminal designing,the method of exploitation and the performance process are elaborated.Firstly,this thesis introduces some technologies which used in this thesis.it mainly include the principles of GPS navigation,system components, technical characteristics.Concerning the system's function and structure,we give out the design method through analysis and comparison , and system requirements for the selection of hardware modules are briefly introduced.Secondly, three main parts are expanded in detail, including hardware design, software design and debug of both hardware and software.The hardware design is divided into two parts: First of all, the receiver board is based on GPS module of u-blox and some external circuit. the selection of receiving antenna, the 50 ohm impedance matching design and the design of power modules are elaborated in the paper. Secondly, as the navigation data processing, positioning, showing,the selection of single-chip and LCD screen (OCM12864) including serial design are also elaborated. The system software is designed with the C51 language.Completes single chip initialization programs,main programs (Positioning data receiving,Processing) ,LCD screen (OCM12864) initialization programs and showing programs. .Finally, The paper introduces the system's test, operating results, the problems which meet on the course of debug and its resolution. Through the debug, we can realize of GPS navigation and complete the design.