Gps Positioning Technology Applied Research In The Fuse

The GPS can provide highly accurate information of position, speed and time for the carrier in the global area. The purpose of the research is to grope for the application of GPS in fuze.The positioning principle, the positioning error and the processing method (Kalman Filtering) are researched. On the base of that, the application of GPS in altimeter fuze is discussed; the principle and the application approach are introduced. The application of GPS in 2-D trajectory correct fuze is discussed, the GPS/MR integration navigation system is introduced, and the application approach is designed.The GPS signal receiving circuit based on GPS module (u-blox LEA-4H) is designed, a system including software and hardware based on MCU is designed, and the interface is designed. The GPS rectangle microstrip antenna is designed, and it can provide foundation for the GPS application in fuze.For the purpose that the GPS information can be easily observed and the data can be easily stored, a GPS signal collecting program is designed based on VISUAL BASIC 6.0. The Kalman filtering program of the data got in dynamic test is accomplished in MATLAB.The static test, dynamic test on low speed and system test are done here. The test data is collected, and the positioning precision of GPS is analyzed. And the GPS signal collecting program and the Kalman filtering program are tested at the same time. It is approved to work well, and the result is correspondingly perfect.