高动态GPS接收机的设计与仿真  

Design and Simulation of High-Dynamic GPS Receiver

作　　者：肖洪兵[1] 何飞云[1] 

机构地区：[1]北京工商大学计算机与信息工程学院,北京100048

出　　处：《计算机仿真》2013年第2期187-190,216,共5页Computer Simulation

摘　　要：与一般环境下卫星定位信号的接收相比,高动态环境下GPS信号产生较大的多普勒频移,产生较大的定位误差,因而对卫星定位信号接收机提出了较高要求:一是要更可靠地捕获卫星定位信号;二是接收机要具有低功耗、小型化、通用性的特点。针对上述要求,提出了采用FPGA的GPS接收机方案,给出了系统的总体设计以及各个主要模块的设计与仿真过程;并根据设计平台,进行了相关实验。实验结果表明,所设计的高动态GPS接收机能够很好地捕捉到卫星信号。系统具有体积小、灵活性强、易升级扩展等特点,在高端民用领域和相关军事领域都具有广阔的应用前景。Compared with the satellite positioning signal receiver in the general environment, the high dynamic environments result in a large position error due to the larger Doppler frequency shift in the GPS receiver. Thus the higher requirements of the satellite positioning receiver are needed. On one hand, it is necessary to capture the satel- lite positioning signal more,reliably; on the other hand, the receiver is of the characteristics of low power consumption, miniaturization, and versatility. In response to these requests, this paper presented a FPGA - based GPS receiver solution. First, the system design was introduced, and then the design and simulation processes were discussed, at last the related results were given based upon the designed platform. The experimental results show that the design of high dynamic GPS receiver is able to capture the satelhte signal accurately. In addition, the system is small, flexible, and easy to upgrade, which has broad applications in the high -end civilian areas and military areas.

关 键 词：现场可编程门陈列 解扩 全球卫星定位系统 接收机 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]