【作者】 许友哲； 高源； 何金帅； 李健； 张磊；

【Author】 XU YouZhe, Gao Yuan, He Jinshuai, Li Jian, Zhang Lei School of Information and Electronics, Beijing Institute of Technology, Beijing, China

【机构】 北京理工大学信息与电子学院；

【摘要】 北斗二代导航卫星尚未全部署完成,只能提供区域性的定位授时功能。因此北斗导航系统与其他卫星导航系统进行兼容定位是非常必要的。本文针对北斗和GPS两个卫星导航系统兼容定位的方法,分析了普通加权、加入高度角和电离层影响的定权方法的效果,并分析高程辅助兼容定位的可用性。仿真结果表明,加权定位只有权衡了北斗和GPS系统间的权值与系统内卫星的权值,才能最大限度提高了兼容定位的精度;此外高程辅助的兼容定位能够有效解决双系统四颗卫星无法定位的问题。更多还原

【Abstract】 As the satellites of the Beidou-2 satellite navigation system have not been fully deployed, Compass can only provide regional positioning timing function. It is necessary for Compass navigation system to be compatible with other satellite navigation systems in the positioning process. The paper analyses the effects of the different weights on the Compass/GPS compatible positioning which is based on unit matrix, pitch angle and ionospheric influence. Besides, the availability of the aiding compatible positioning with the elevation is analysed. The simulation results show that only the weights are balanced between Compass and GPS system, as well as between the different satellites, can improve the accuracy of the compatible positioning. In addition, the aiding compatible positioning with the elevation can effectively solve the problem that the dual navigation system of four satellites can not local.更多还原