基于PCI总线的GPS接收机的研制

Development of GPS Receiver Based on PCI Bus

为了研究GPS接收机的体系结构和新的定位算法,提出了一种基于PCI总线的GPS接收机体系结构的设计方案。研究了GPS系统的原理、接收机的组成及各组成部分的功能和技术要求,设计和实现了接收机射频前端模块、基带信号处理模块和PCI接口电路,并对整个接收机的设计过程和器件的选择、设计时遇到的问题和注意事项作了详细说明,最后完成了系统硬件平台各部分的调试以及系统定位的实验。结果表明,所设计的GPS接收机工作稳定可靠,系统定位经纬度误差分别为±1.1×10-4度和±4×10-5度,海拔误差为±8 m,即定位精度也达到设计要求。

In order to study the architecture of GPS receiver and new positioning algorithm, the paper brought forward a design scheme of PCI-based GPS receiver. The paper also studied the principle of GPS system, composition of the GPS receiver, the performance and technical requirements of each part, then designed and realized the module of Radio Frequency （RF） front end, baseband signal processing module and PCI interface circuit. Moreover, the paper studied the whole designing process and choosing of components when designing. Finally, it completed the debugging of every module on the hardware platform and positioning experiment. The experiment results indicated that the designed GPS receiver worked well, whose longitude and latitude error were within ± 1.1 ×10^-4 degree, and ±4 × 10^-5 degree, respectively, and altitude error was within ± 8 m. In a word, the positioning precision has attained the desired target.