摘要
给出了具有实时性、灵活性和可扩展性的整个GPS(GlobalPosition ingSystem ,全球定位系统 )模拟器闭环测试系统的结构 ,引入了数据收集用GPS接收机 ;推导了多路高动态GPS信号的数学模型 ,并提出在信号状态计算中增加两个参数以反映高动态的影响 ;在此基础上建立了模拟器软件的体系结构 ,并给出了软件设计实例和仿真结果 .所设计的GPS信号模拟器可以为GPS用户端设备的参数测量、软硬件调试、性能测试和评估等提供一个逼真的高动态信号环境 .
The hardware-in-the-loop system architecture of GPS (global positioning system) simulator was presented, which was flexible, expansible and capable of real time test, and a data-collecting GPS receiver was introduced into the system. The mathematical model of high-dynamic GPS signal was derived, and it was suggested to add two parameters to emulate high-dynamic effects. The structure of the simulator software was established. A software design instance and its simulation results were given. The simulator can provide a realistic high-dynamic signal environment for parameter measurement, computer hardware and software debug, performance test and evaluation of GPS user end.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2004年第6期534-538,共5页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目 ( 60 0 2 70 0 1)
关键词
模拟器
多普勒频移
高动态
全球定位系统
闭环测试系统
Computer software
Design
Dynamics
Evaluation
Global positioning system
Real time systems
