GPS定位技术在引信中的应用研究

【作者】 邵德超；

【导师】 张合；

【作者基本信息】 南京理工大学 ， 机械电子工程， 2007， 硕士

【摘要】 全球定位系统能够在全球范围内为载体提供高精度的定位、速度和时间信息，本文研究的主要目的是对全球定位系统在引信中的应用进行探索。研究了全球定位系统的定位原理、定位误差及其处理方法(即卡尔曼滤波)，在此基础上，讨论了GPS在定高引信中的应用，介绍了GPS定高引信的工作原理和应用方案；讨论了GPS在二维弹道修正中的应用，介绍了GPS／磁探测组合导航系统的应用原理和应用方案。以GPS模块(u-blox LEA-4H)为核心设计了GPS信号接收电路，设计了以单片机为处理核心的硬件、软件在内的整个系统，设计了两者之间的接口，设计了GPS矩形微带天线，为GPS应用到引信体上打下了基础。为了对GPS信息进行较为直观的观测，同时方便数据采集存储，利用VISUALBASIC 6.0编程语言设计了GPS信息采集程序。在MATLAB数据处理平台上，设计了卡尔曼滤波程序。对GPS定位系统进行了静态、低速运动和系统调试实验。采集了实验数据，分析了GPS定位系统的定位精度。同时测试了自己设计的GPS信息采集程序与卡尔曼滤波程序。通过实验结果分析表明，整个系统工作稳定、性能良好，取得了比较理想的效果。更多还原

【Abstract】 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.更多还原