...豆丁网 的绘制，受到地理资讯系统(GIS, Geographical Information System)与卫星定位系统(GPS, Geographical Positioning System)等科学制图工具 日益普及的影响相当大。
基于4个网页-相关网页
而当今可以应用于卫星辅助导航技术的卫星定位系统主要有两个：GPS系统与GALILEO系统。
There are two navigation satellite systems which can be used in this technology: GPS and GALILEO.
而研究卫星定位系统终端使用的天线具有重要的价值与意义，特别是天线的宽带化、小型化技术。
So, it is very important for us to do some research on the satellite navigation and positioning system antenna especially on the broadbandization and miniaturization technology.
本论文分析了基于北斗导航定位系统的三星定位系统总体结构和工作原理，对卫星导航中与定位精度有关的部分进行了研究。
This thesis analyzes the principle and architecture of three-star navigation system based on "Beidou" system and investigates the problems related with positioning precision.
应用推荐