The Design And Implementation Of Navigation Handheld Terminal Based On WinCE

In recent years, civilian satellite navigation system of the growing demand, sodeveloped a civilian market for similar products and meet the specifications of the newgeneration of national Beidou satellite navigation terminal system is of great significanceand practical operability.The subject of satellite navigation terminal is based on Windows CE embeddedoperating systems and GPS navigation system Beidou navigation and positioning systemwith dual-mode navigation applications. Equipment which can receive, process Beidousatellite navigation and GPS systems signals with Compass RNSS positioning, GPSpositioning, Beidou pseudorange differential positioning. The use of complementary mode,by means of modern control theory and valuation theory, the overall performance is betterthan any child system constitutes a combination of navigation mode, to meet the preciseneeds of navigation; the same time by RS-232, CAN interface with external equipmenttransmit data to each other, complete with the computer through the USB interface andother electronic navigation map information transmission, load and so on. By randomelectronic map with a civilian, the user can clearly perceive their geographic locationinformation, the surrounding environment, real-time planning travel routes; can also usethe machine preset routes, destinations information, quickly arrived at the designatedlocation. Beidou satellite navigation system based on a short-message communicationfunction, the terminal has a certain ability to communicate the message. End of thedatabase management module is based on the SQLite embedded database. MFC controlclass through the expansion of the system of man-machine interface systems with moreinteractivity and usability.Completed by the end of the subject in the most designed, in navigation andpositioning information acquisition and analysis, SMS messages and address bookmanagement, human-machine interface development, etc. to solve the actual needs of users. But the system also features a number of modules need to be improved in futurework. After testing, the terminal has good reliability, environmental adaptability,scalability, compared with vehicle navigation systems, portable terminals have better andgood value for money. I believe in the end to the market, will achieve better economic andsocial benefits.